Tintenstrahldruckkopf und Tintenstrahldrucker

INK JET RECORDING HEAD & INK JET RECORDING APPARATUS

A FLEXIBLE COVER MEMBER ABSTENTION COVER SYSTEM FOR INK RADIATION PRINTING ARRANGEMENT

TINTENSTRAHLTRÖPCHENGENERATOR

PROCEDURE AS A CHECK OF AN INK JET PRINTER, INK RADIATION PRINT HEAD FOR THIS PROCEDURE AND INK JET PRINTER AND WITH SUCH PRINT HEAD OF PROVIDED INK JET PRINTERS

INK RADIATION RECORDING HEAD

LIQUID OUTPUT PROCEDURE USING A HEAD WITH A MOBILE MEMBER

TINTENSTRAHLDRUKKOPF AND WITH IT PROVIDED DRUCKVORRICHTUNG

INK RADIATION PRINT HEAD

Liquid ejecting method with movable member

PRESSURE DAMPER OF AN INK JET PRINTER

LIQUID EJECTING METHOD WITH MOVABLE MEMBER

A liquid ejecting method for ejecting a liquid comprises using a liquid ejecting head having an ejection outlet portion having an ejection outlet for ejecting the liquid, a liquid flow path in fluid communication with the ejection outlet portion, a bubble generation region for generating a bubble in the liquid, and a movable member disposed to face the bubble generation region and provided with a free end closer to the ejection outlet portion than a fulcrum portion thereof, and displacing the movable member by a pressure based on generation of the bubble from a position of a reference surface to a position of a maximum displacement, thereby ejecting the liquid, wherein a relation of 2.theta.E - 7.degree. is satisfied where, with a reference of the reference surface, .theta.M is an angle of the movable member at the maximum displacement thereof about the fulcrum portion and .theta.E is an angle of an axis connecting the fulcrum portion with an intersecting point of a center axis of the ejection ...

Printing head component in ink-jet printer

The gas can be removed from the fluid delivery system

Ink jet printing machine - has section at compression chamber entrance restricting return flow to reservoir

Inkjet print head

LIQUID INJECTION HEAD AND LIQUID INJECTION DEVICE WHICH FORMS A FILM MATERIAL ON A RECORDING TARGET OBJECT BY DISCHARGING LIQUID FROM NOZZLE

PURPOSE: A liquid injection head and a liquid injection device are provided to vary discharging property by preventing the deviation of a liquid discharge velocity. CONSTITUTION: A liquid injection head comprises an actuator(2), a fluid path member(3) and a first buffer member(4). Long grooves are arranged in the surface of the substrate of actuator. The actuator discharges liquid from the nozzle which is connected with in the long groove. The fluid path member supplies liquid to a plurality of grooves of actuator. The first buffer member is inserted between the actuator and the fluid path member. The first buffer member interlinks the actuator and the fluid path member. The rubber member is used as a buffer member. COPYRIGHT KIPO 2011 ...

PRINTHEAD WITH MATCHED RESONANT DAMPING STRUCTURE

A printhead that has at least one printhead integrated circuit (IC) with an array of nozzles for ejecting ink and a support structure for supporting the printhead IC. The support structure has an ink conduit for supplying the array of nozzles with ink. The conduit has a set of resonant frequencies at which ink in the conduit generates a standing wave in response to certain operating modes of the array of nozzle. A fluidic damper is incorporated into printhead, the damper having a selected resonant frequency that damps the standing waves associated with each of the set of resonant frequencies such that they have an amplitude less than a maximum threshold. COPYRIGHT KIPO & WIPO 2010 ...

Printhead with elongate array of nozzles and distributed pulse dampers

PRINTHEAD WITH MATCHED RESONANT DAMPING STRUCTURE

A printhead that has at least one printhead integrated circuit (IC) with an array of nozzles for ejecting ink and a support structure for supporting the printhead IC. The support structure has an ink conduit for supplying the array of nozzles with ink. The conduit has a set of resonant frequencies at which ink in the conduit generates a standing wave in response to certain operating modes of the array of nozzle. A fluidic damper is incorporated into printhead, the damper having a selected resonant frequency that damps the standing waves associated with each of the set of resonant frequencies such that they have an amplitude less than a maximum threshold.

INK JET HEAD AND INK JET DEVICE

An ink jet head includes a pressure chamber, a main flow path, an actuator, a nozzle, a first communication flow path, and a filter. The pressure chamber is filled with an ink. The main flow path supplies the ink to the pressure chamber. The actuator changes the pressure of the ink filled in the pressure chamber. The nozzle is connected to the pressure chamber and ejects the ink filled in the pressure chamber by driving of the actuator. The first communication flow path connects the pressure chamber to the main flow path. The filter is disposed at a predetermined position between the nozzle and the vicinity of a first boundary of the main flow path and the first communication flow path, and the filter captures an impurity in the ink which has a size larger than the diameter of the nozzle.

PRINTHEAD WITH NON-PRIMING CAVITIES FOR PULSE DAMPING

A printhead for an inkjet printer that has a printhead integrated circuit (68) with nozzles for ejecting ink and a support structure (64, 174, 176) for supporting the printhead IC. The support structure having ink conduits (182) for supplying the array of nozzles. A plurality of cavities (200), each cavity having an opening that establishes fluid communication with the ink conduits, the openings being configured such that the cavities do not prime with ink when the ink conduits are primed from the ink supply. By leaving unprimed cavities throughout the support structure, any pressure pulses in the ink are damped by compression of the trapped gas pockets. Distributing the cavities rather than using one relatively large cavity, means that the pressure pulse is being damped along the length of the printhead IC, instead of allowing the pulse to travel the length of the ink conduit until it reaches the single damper and compresses the gas.

Ink-jet head, ink-jet apparatus and method of filling buffer chamber with bubbles

An ink jet head having a buffer chamber which absorbs any back-pressure wave generated as a result of generation of back wave, thereby preventing reduction of refilling with ink. Exothermic elements provided in buffer chambers formed in a common ink chamber generate bubbles so that bubbles are always maintained in the buffer chambers so as to ensure stable recording.

Bubble-jet type ink-jet printhead

A bubble-jet type ink-jet printhead, includes a substrate, a nozzle plate, a wall, and a heater, wherein the heater is interposed between the substrate and the nozzle plate to divide an ink chamber into a main ink chamber and a secondary ink chamber, wherein a main bubble and a secondary bubble are generated. The printhead may further include an ink channel for introducing ink into the secondary ink chamber for supplying the ink to the main ink chamber. The printhead according to the present invention consumes less energy, prevents a backflow of ink, and operates at increased speed.

PRINTHEAD WITH PRESSURE-DAMPENING STRUCTURES

An inkjet printhead is provided. The printhead comprises a plurality of nozzle assemblies; a nozzle plate covering the plurality of nozzle assemblies; an ink supply system for supplying ink to the plurality of nozzle assemblies, the ink supply system comprising at least one conduit wall defined by part of the nozzle plate; and at least one pressure-dampening structure positioned in the part of the nozzle plate. The pressure-dampening structures dampen ink pressure fluctuations in the ink supply system.

Recording head and recording apparatus

A recording head includes a recording element substrate having a discharge port facilitating discharging a liquid droplet, an energy generating element configured to generate energy for liquid discharge, and a supply opening facilitating supplying the discharge port with a liquid. The recording head also has a support member having a supply path formed by laminating a plurality of plate-shaped members including an opening portion. The support member supports the recording element substrate and includes a chamber communicating with the supply path and adapted to hold air.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head that includes a first piezoelectric element and a second piezoelectric element, a first wire that extends in a first direction and that electrically couples the first piezoelectric element and a wiring substrate to each other, and a second wire that is adjacent to the first wire in a second direction intersecting the first direction and that extends in the first direction, the second wire electrically coupling the second piezoelectric element and the wiring substrate to each other. A first protrusion is formed on a surface of the first wire in a mounting area to where the wiring substrate is joined, and a second protrusion is formed on a surface of the second wire in the mounting area and at a position different from that of the first protrusion in the first direction.

LIQUID EJECTING APPARATUS AND MAINTENANCE METHOD FOR LIQUID EJECTING APPARATUS

A liquid ejecting apparatus includes a liquid supply flow path configured to supply a liquid stored in a liquid supply source to a liquid ejecting portion, a reservoir portion provided in the liquid supply flow path, an on-off valve provided between the liquid supply source and the reservoir portion, a discharge mechanism configured to discharge the liquid in the liquid supply flow path by depressurizing the liquid supply flow path, and a pressure mechanism configured to apply a negative pressure to the interior of the reservoir portion from the exterior. A negative pressure equal to or larger than a negative pressure applied to the interior of the reservoir portion by the discharge mechanism, is applied to the interior of the reservoir portion in a maintenance operation in which the liquid supply flow path is depressurized by the discharge mechanism while the on-off valve is closed. 1. A liquid ejecting apparatus comprising:a liquid ejecting portion configured to eject a liquid through a nozzle;a liquid supply flow path configured to supply the liquid stored in a liquid supply source to the liquid ejecting portion;a reservoir portion provided in the liquid supply flow path and configured to store the liquid;an on-off valve provided on a side of the liquid supply source relative to the reservoir portion in the liquid supply flow path and configured to open and close the liquid supply flow path;a discharge mechanism configured to discharge the liquid in the liquid supply flow path from a side of the liquid ejecting portion relative to the reservoir portion in the liquid supply flow path by depressurizing the liquid supply flow path;a pressure mechanism configured to apply a negative pressure to an interior of the reservoir portion from exterior; anda control portion configured to control the pressure mechanism to apply, to the interior of the reservoir portion, a negative pressure equal to or larger than a negative pressure applied to the interior of the reservoir ...

FLUID EJECTION DEVICE AND PRINTHEAD

Ejection device for fluid, comprising a solid body including: first semiconductor body including a chamber for containing the fluid, an ejection nozzle in fluid connection with the chamber, and an actuator operatively connected to the chamber to generate, in use, one or more pressure waves in the fluid such as to cause ejection of the fluid from the ejection nozzle; and a second semiconductor body including a channel for feeding the fluid to the chamber, coupled to the first semiconductor body, in such a way that the channel is in fluid connection with the chamber. The second semiconductor body integrates a damping cavity over which extends a damping membrane, the damping cavity and the damping membrane extending laterally to the channel for feeding the fluid. 1. A method for manufacturing a fluid ejection device , the method comprising:forming a chamber configured to receive a fluid, the chamber including a first membrane at a first surface of the chamber;forming an ejection nozzle in fluidic connection with the chamber;forming a damping membrane; andforming a reservoir chamber,wherein the first membrane is configured to cause fluid in the chamber to be ejected through the ejection nozzle,wherein the reservoir chamber is fluidically coupled to the chamber by a fluid path and configured to provide the fluid to the chamber, andwherein the damping membrane faces the reservoir chamber and is configured to dampen the fluid in the reservoir chamber.2. The method according to claim 1 , wherein the damping membrane is configured to dampen the fluid in the chamber.3. The method according to claim 1 , wherein forming the damping membrane comprises forming a closed cavity in a monolithic body claim 1 , the damping membrane facing the closed cavity.4. The method according to claim 3 , further comprising forming a filter in in the monolithic body that forms a portion of the fluid path.5. The method according to claim 4 , wherein the closed cavity is formed before the filter is ...

Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and ultrasonic sensor

A liquid ejecting head which includes a piezoelectric element which includes a first electrode, a piezoelectric layer which is provided on the first electrode, and on which a plurality of piezoelectric films are laminated, a second electrode which is provided on the piezoelectric layer, and a plurality of active units which are interposed between the first electrode and the second electrode, and a pressure generating chamber which communicates with nozzle openings which eject liquid, and in which a pressure fluctuation is generated by the piezoelectric element, in which a plurality of grooves with inner faces facing the first electrode side are formed on a side surface of the piezoelectric layer on each interface of each of the piezoelectric films along a first direction and a second direction which cross a third direction which goes from the first electrode to the second electrode.

METHOD OF MANUFACTURING SUBSTRATE FOR LIQUID DISCHARGE HEAD

Provided is a method of manufacturing a substrate for a liquid discharge head including a first face, energy generating elements which generate the energy to be used to discharge a liquid to a second face opposite to the first face, and liquid supply ports for supplying the liquid to the energy generating elements. The method includes preparing a silicon substrate having, at the first face, an etching mask layer having an opening corresponding to a portion where the liquid supply ports are to be formed, and having first recesses provided within the opening, and second recesses provided in the region of the second face where the liquid supply ports are to be formed, the first recesses and the second recesses being separated from each other by a portion of the substrate; and etching the silicon substrate by crystal anisotropic etching from the opening of the first face to form the liquid supply ports.

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head which includes a flow passage forming substrate that has pressure generating chambers which communicate with nozzles capable of ejecting a liquid, pressure generating elements which apply pressure to the pressure generating chambers in order to eject the liquid from the nozzles, lead electrodes that supply electric signals to the pressure generating elements, wiring substrates that supply the electric signals to the lead electrodes, and a supporting member that supports the wiring substrates so as to raise the wiring substrates from a surface of the liquid ejecting head having the lead electrodes provided thereon.

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus

A piezoelectric element comprises a piezoelectric layer consisting a complex oxide having a perovskite structure containing bismuth and iron and electrodes provided to the piezoelectric layer. The complex oxide further contains a first dopant element that is at least one of magnesium and zinc and a second dopant element that is cerium.

DUAL FEED LIQUID DROP EJECTOR

LIQUID DISCHARGE DEVICE

A liquid discharge device (1) has a pressure chamber (3), a nozzle (4), and a communication path (5) that interconnects the pressure chamber (3) and the nozzle (4). A region that has a specific length L1 and lies from the position (8) of the boundary between the communication path (5) of the pressure chamber (3) toward the nozzle (4) is formed as a narrow section (9) that has an opening area S1 smaller than the opening area S0 of a region closer to the nozzle (4) than the narrow section (9). In the liquid discharge device (1), the narrow section (9) functions to damp micro vibration that occurs in liquid in the communication path (5) , and this allows liquid drops having a pre-designed volume and flying speed to be discharged from every nozzle (4) on a board (2) ...

Inkjet heads

An inkjet head includes a flow channel member comprising a first orifice which opens in a first direction, in which ink flows into the first orifice. The flow channel member also includes a second orifice which opens in a second direction opposite to the first direction, in which ink flows out from the second orifice, and an ink flow channel formed therein, in which the ink flow channel extends from the first orifice to the second orifice. Moreover the inkjet head includes a flexible film which is attached to the flow channel member, and the flexible film seals the ink flow channel.

Thermal ink-jet printhead with an optimized fluid flow channel impedance

A thermal ink-jet ejector (10) having a fluid flow channel (12) extending between an ink inlet (16) and a nozzle (18) for the ejection of liquid ink therefrom, includes a rear channel diffuser (30) disposed between the heating element (20) and the inlet (16), and/or a front channel diffuser (32) disposed between the heating element (20) and the nozzle (16). Each diffuser (30, 32) includes an arrangement of tapers which decrease the flow impedance of liquid ink flowing toward the nozzle (18), and increase the flow impedance of liquid ink flowing toward the inlet (16). The arrangement increases the kinetic energy of droplets being ejected, and also increases the speed of re-fill of the channel with liquid ink following ejection. ...

PRESSURE PULSE DROP EJECTOR AND METHOD OF EJECTING PRESSURE PULSE DROP FROM SAID EJECTOR

ЭЛЕМЕНТНАЯ ПОДЛОЖКА, ПЕЧАТАЮЩАЯ ГОЛОВКА И ПЕЧАТАЮЩЕЕ УСТРОЙСТВО

... 1. Элементная подложка, включающая в себя множество печатающих элементов, на которые подается первое напряжение, множество элементов возбуждения, обеспеченное в соответствии с множеством печатающих элементов и сконфигурированное для возбуждения множества печатающих элементов, множество логических схем, сконфигурированное для формирования на основе внешнего входного сигнала сигнала выбора, используемого для выбора и возбуждения множества печатающих элементов, и множество первых преобразователей уровней, обеспеченное в соответствии с множеством логических схем и сконфигурированное для повышения логического напряжения, имеющего второе напряжение ниже первого напряжения сигнала выбора, содержащая:контактную площадку, сконфигурированную для приема извне сигнала обнаружения, указывающего обнаружение падения логического напряжения;второй преобразователь уровней, сконфигурированный для приема сигнала обнаружения посредством упомянутой контактной площадки и повышения сигнала обнаружения; имножество ...

Устройство для формирования капель в блоках струйной печати

TINTENSTRAHLDRUCKER MIT GESTEUERTER TROPFENERZEUGUNG.

TINTENSTRAHLDRUCKKOPF

TINTENSTRAHLDRUCKER.

Pressure buffer and ink-jet recording apparatus

Pressure buffer and inkjet recording apparatus

A pressure buffer (5) having a structure capable of completely removing air bubbles from a chamber (18) provided in the pressure buffer (5), the ink flow outlet (11) in the pressure buffer is always positioned in an uppermost portion in a vertical direction, during use of the ink-jet recording apparatus. Furthermore, an elastic member (13,Fig 3) for preventing the flexible film of the pressure buffer from adhering to a bottom surface of the chamber (18) is provided inside of the chamber (18), and a rigid reinforcing plate (14,Fig 3) for suppressing excess deformation of the flexible film is provided outside of the chamber. Further, the reinforcing plate (14) includes means to enable the reinforcing plate (14,Fig 3) to communicate a gap 3 (17,Fig 3) with the atmosphere. Also, the body of the pressure buffer (5) and at least the flexible film (9, Fig 3) or the reinforcing plate (14, Fig 3) are respectively made of a material that does not transmit UV-light.

JET PRINTER

INK JET ASSEMBLIES

PROCEDURE FOR THE REDUCTION OF THE CAVITATION IN IMPULSE INK JET PRINTERS

RECORDING HEAD OF AN INK RADIATION TYPE

MANUFACTURING PROCESS FOR AN INJECTION HEAD AND INJECTION HEAD

Liquid rushing impact device

INK RADIATION PRINT HEAD AND THEREBY PROVIDED DRUCKVORRICHTUNG

INK RADIATION PRINT HEAD

INK JET PRINTER WITH A DEVICE FOR BRINGING A BLISTER INTO THE INK CHAMBER

IMPULSE INK RADIATION EQUIPMENT WITH NEGATIVE PRESSURE PROTECTION

INK JET PRINTER CONTROL SYSTEM

A piezoelectric crystal is connected with a membrane and is energized to deflect or bend the membrane for ejecting droplets of ink from an ink supply. The energizing voltage pulses are timed to start and are of a duration whereby the return of the membrane to a normal position upon termination of the voltage pulses acts against the negative pressure wave in the ink supply for preventing excessive underpressure therein.

MENISCUS DAMPENING DROP GENERATOR

PRINTHEAD WITH MATCHED RESONANT DAMPING STRUCTURE

A printhead that has at least one printhead integrated circuit (IC) with an array of nozzles for ejecting ink and a support structure for supporting the printhead IC. The support structure has an ink conduit for supplying the array of nozzles with ink. The conduit has a set of resonant frequencies at which ink in the conduit generates a standing wave in response to certain operating modes of the array of nozzle. A fluidic damper is incorporated into printhead, the damper having a selected resonant frequency that damps the standing waves associated with each of the set of resonant frequencies such that they have an amplitude less than a maximum threshold.

IMPULSE FLUID JET APPARATUS WITH DEPRIMING PROTECTION

An impulse fluid or ink jet print head (10) comprises a manifold (30) which is supplied with fluid in the form of ink through two check valves (32) located at an end of a plurality of supply channels (48). The check valves (32) comprise a diaphragm (34) which seats against a valve seat (36) in the print head (10) when the valve is closed. A diaphragm (34) when open permits the flow of ink when seated against an end (38) of a check valve insert or support (40).

Ink jet printer head

Liquid ejecting head, liquid ejecting head unit, liquid ejecting apparatus and method of manufacturing liquid ejecting head

The invention provides a liquid ejecting head in which a circuit board is reliably sealed and adhesion positional deviation between divided holding members and connection displacement of flow passages can be reduced, a liquid ejecting head unit, a liquid ejecting apparatus and a method of manufacturing the liquid ejecting head. The liquid ejecting head comprises: a holding member which has a first holding member holding the head main body and a second holding member mounted on the side of the first holding member opposite to the head main body via an adhesive and a circuit board which is held in a circuit board holding section corresponding to a space between the first and second holding members and to which a driving wiring of the head main body is connected, wherein the circuit board holding section between the first and second holding members is sealed by an adhesive in an area other than an area where a connection wiring is connected to the circuit board, the first and second holding ...

Liquid ejecting head, liquid ejecting head unit, and liquid ejecting apparatus

Ink-jet print head

Thermal ink-jet printhead with an optimized fluid flow channel in each ejector

A thermal ink-jet ejector having a fluid flow channel extending between an ink inlet and a nozzle for the ejection of liquid ink therefrom, includes a rear channel diffuser disposed between the heating element and the inlet, and/or a front channel diffuser disposed between the heating element and the nozzle. Each diffuser includes an arrangement of tapers which decrease the flow impedance of liquid ink flowing toward the nozzle, and increase the flow impedance of liquid ink flowing toward the inlet. The arrangement increases the kinetic energy of droplets being ejected, and also increases the speed of re-fill of the channel with liquid ink following ejection.

APPARATUS FOR APPLYING A LIQUID IN DROPLETS TO A SURFACE

Multi-nozzle ink jet head and manufacturing method thereof

In a multi-nozzle ink jet head having a plurality of nozzles, cross talk between adjacent elements is suppressed. The head has the nozzles ( 12 ), pressure chambers ( 15 ), and bimorph drivers. The bimorph drivers have piezos ( 19 ) formed on a diaphragm ( 18 ). The diaphragm ( 18 ) has linear parts ( 18 - 1 ) that convert the generated force from the piezos ( 19 ) into displacement, and non-linear parts ( 18 - 2 ) that are provided between the linear parts ( 18 - 1 ) and diaphragm fixing parts. Due to the non-linear parts ( 18 - 2 ), transmission of strain energy to the fixing parts is suppressed, and hence cross talk is suppressed.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head comprises a unit head bonded to a communication substrate. Liquid chamber forming portions are formed in the unit case, along a first direction at positions that are separated by a partition wall. Empty liquid chamber portions and supply-side communication paths are formed in the communication substrate. The supply-side communication paths include a common communication path formed in an opposite side with a thin thickness portion left in the surface side of the communication substrate, and individual communication paths. With a surface of the partition wall and a surface of the thin thickness portion bonded together, the empty liquid chamber forming portions and the empty liquid chamber portions communicate with each other so as to define common liquid chambers.

Printhead with pressure-dampening structures

An inkjet printhead is provided. The printhead comprises a plurality of nozzle assemblies; a nozzle plate covering the plurality of nozzle assemblies; an ink supply system for supplying ink to the plurality of nozzle assemblies, the ink supply system comprising at least one conduit wall defined by part of the nozzle plate; and at least one pressure-dampening structure positioned in the part of the nozzle plate. The pressure-dampening structures dampen ink pressure fluctuations in the ink supply system.

Ink jet recording head

The angles and sizes for each of the constituent members of the ink jet recording head is designed to satisfy the following relational express ...

Ink jet print head

A print element is actuated by a piezoelectric transducer controlled by a circuit which is capable of emitting a pulse in such a way that the reflection waves arising from expulsion pressure in the conduit for the ink are cancelled. The transducer is also connected to a circuit for detecting the pressure of the ink during the printing operation. A circuit for detecting the malfunctioning is capable of storing and signalling both the presence of bubbles in the conduit and the conduit empty condition. For bubbles, a flip-flop in the malfunction detecting circuit stores a signal indicating the presence of reflection phenomena when control circuit is operated for cancellation of the reflection waves. For the conduit empty condition it stores a signal indicative of the absence of reflection phenomena when the control circuit is operated in such a way that cancellation of the reflection waves does not occur.

Ink jet printhead with ink flow directing valves

A thermal ink jet printhead has a flow directing one-way valve for reducing back-flow directed forces generated by the droplet ejecting ink vapor bubbles, so that most of the bubble generated forces are used to eject ink droplets from the printhead nozzles. The one-way valve is provided by patterning the etch resistant mask to form a flap located at a predetermined position along the ink channels between the heating elements and reservoirs, which is activated by bubble generated forces directed in the opposite direction from the printhead nozzles.

Ink jet printing apparatus

An ink jet printing apparatus comprises a nozzle head including, orifices for ejecting ink particles, pressure chambers each having a piezoelectric element for applying a pressure wave to ink in the chamber and each communicating with corresponding one of the orifices and an ink chamber communicating with the pressure chambers, and electrical signal applying device for applying an electrical signal to selected one or ones of the piezoelectric elements to produce the pressure waves. The electrical signal applying device applies a main electrical signal pulse to the selected one or ones of the piezoelectric elements for inducing rises of the pressure waves and applies a sub-electrical signal pulse for suppressing the pulsations of the pressure waves a predetermined time interval after the main electrical signal.

Pressure buffer and ink-jet recording apparatus

A pressure buffer of an ink-jet recording apparatus is placed in the vicinity of an ink-jet recording head in an ink supply path connecting an ink container to the ink-jet recording head. A body of the pressure buffer has a concave portion at least on one surface, and a flexible film is attached to tightly close the concave portion to form a chamber. The chamber has an ink flow outlet through which ink flows from the chamber to the ink-jet recording head and an ink flow inlet through which ink flows from the ink container to the chamber. The ink flow outlet is always positioned in an uppermost portion in a vertical direction of the chamber, and the ink flow inlet is positioned at an equal level or on a lower side in a vertical direction with respect to the ink flow outlet.

Liquid discharge head

There is provided a liquid discharge head, including: a piezoelectric body having a plurality of piezoelectric layers stacked on top of each other in a stacking direction; individual electrodes; and a first common electrode. Each of the individual electrodes has a first portion and a second portion arranged in the first direction at an interval, and a third portion coupling the first portion with the second portion. The first common electrode includes a first extending portion as well as first protrusions and second protrusions protruding from the first extending portion. Portions of the first extending portion overlapping in the stacking direction with the third portions are formed having through holes passing through the first common electrode in the stacking direction.

Liquid ejection head and recording device using the same

A liquid ejection head includes: a liquid ejection head body; and a reservoir, wherein the reservoir includes: a reservoir flow passage; and a branched flow passage, the branched flow passage extends in one direction, and is communicated with the liquid ejection head body at both end portions thereof, and in viewing the liquid ejection head from a reservoir side, at least one of the reservoir flow passage and the branched flow passage in the vicinity of a connection portion where the reservoir flow passage and the branched flow passage are communicated with each other is bent such that an angle made by the reservoir flow passage and the branched flow passage approximates a right angle.

Liquid Discharge Head

There is provided a liquid discharge head including: a plurality of pressure chambers including pressure chambers aligned in a first direction orthogonal to a vertical direction so as to form a first pressure chamber group, and pressure chambers aligned in the first direction so as to form a second pressure chamber group arranged side to side relative to the first pressure chamber group in a second direction; a return channel extending in the first direction; and return connecting channels each connecting the return channel and one of the plurality of pressure chambers to each other, wherein a height of an upper surface of each of the return connecting channels is not less than a height of an upper surface of one of the plurality of pressure chambers which is connected to the return channel by each of the return connecting channels. 1. A liquid discharge head comprising:a plurality of pressure chambers forming a first pressure chamber group and a second pressure chamber group, the first pressure chamber group including a part of the pressure chambers aligned in a first direction orthogonal to a vertical direction, and the second pressure chamber group including another part of the pressure chambers aligned in the first direction, the second pressure chamber group being arranged side by side relative to the first pressure chamber group in a second direction orthogonal to the vertical direction and crossing the first direction;a return channel extending in the first direction between, in the second direction, the pressure chambers included in the first pressure chamber group and the pressure chambers included in the second pressure chamber group; anda plurality of return connecting channels each connecting the return channel and one of the plurality of pressure chambers to each other,wherein a height of an upper surface of each of the plurality of return connecting channels is not less than a height of an upper surface of one of the plurality of pressure chambers ...

LIQUID DROPLET EJECTING HEAD, LIQUID DROPLET EJECTING DEVICE, AND IMAGE FORMING APPARATUS

In an embodiment, a liquid droplet ejecting head includes sequentially in a laminated manner: a nozzle substrate; an ink tank substrate; a liquid supply substrate; and a frame substrate. The nozzle substrate is formed so that at least three or more nozzle rows are arranged in a direction intersecting a longitudinal direction of the nozzle row; the driving circuit member is provided to oppose to an outer surface of the frame substrate so as to correspond to a region between two adjacent nozzle rows located at the 4N+2-th position and the 4N+3-th position (N is 0 or a natural number); and the driving circuit member is commonly used to drive the electro-mechanical converting element and to drive the electro-mechanical converting element used for another one or two nozzle rows adjacent to at least one of the two nozzle rows.

Liquid discharge device and liquid discharge method

A liquid discharge device including a discharge unit including: an elastic discharge part including a storage chamber at least partially formed of an elastic component, a supply hole which leads to the storage chamber and through which liquid is supplied to the storage chamber, and a discharge hole through which the liquid is discharged; and an actuating unit configured to vary a volumetric capacity of the storage chamber. The liquid discharge device further includes: a pressurizing unit configured to pressurize the liquid to be supplied to the storage chamber to a pressure within a stable range; a supply control unit configured to control whether the pressurized liquid is supplied to the storage chamber; and an actuation control unit configured to control operation of the actuating unit.

PRINTHEAD SUPPORT STRUCTURE WITH CAVITIES FOR PULSE DAMPING

A structure for an inkjet printhead is disclosed. The printhead structure has an elongate support structure for supporting a printhead integrated circuit, and ink conduits formed in the elongate support structure for supplying ink to an array of nozzles of the printhead integrated circuit. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior, the transition face being configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.

LIQUID DISCHARGE HEAD AND PRINTER

A liquid discharge head includes first and second actuators and a drive circuit. Each of the first and second actuators is configured to expand and contract first and second pressure chambers, respectively. The drive circuit is configured to, during a dot formation cycle apply a first number of discharge pulses to the first actuator to cause the first number of droplets to be discharged from the first pressure chamber and apply a second number of discharge pulses to the second actuator to cause the second number of droplets to be discharged from the second pressure chamber and apply a third number of precursors to the second actuator. The first number is greater than or equal to two. Each of the second and third numbers is greater than or equal to one. A sum of the second and third numbers is less than or equal to the first number.

Liquid-droplet jetting apparatus

A liquid-droplet jetting apparatus includes a first common liquid chamber which supplies a liquid to first pressure chambers communicating with first nozzles and extending in a predetermined direction; and a second common liquid chamber which supplies a liquid to second pressure chambers communicating with second nozzles and extending in the predetermined direction. The first and second common liquid chambers are overlapped in a plan view, and each having a substantial width. A damper for attenuating pressure wave which propagates to the first and second common liquid chambers is formed at a portion in which the first and second common liquid chambers are overlapped. Each of the first common liquid chamber, the second common liquid chamber and the damper is formed to have a width overlapping with one of the first and second pressure chambers, thereby making it possible to attenuate the pressure wave efficiently.

Piezoelectric inkjet printhead

Provided is a piezoelectric inkjet printhead. The piezoelectric inkjet printhead includes: a manifold (140,240,340); a chamber array including a plurality of chambers (161,261,361) in connection with the manifold and arranged along at least one side of the manifold in connection with the manifold; a vibrating plate (120,220,320) covering the chambers; and a plurality of piezoelectric actuators (180,280,380) formed on the vibrating plate for changing pressures of the respective chambers by vibrating the vibrating plate. The chambers includes a plurality of pressure chambers disposed in a center portion of the chamber array and having ink ejecting nozzles, respectively, and at least one dummy chamber (162,262,362) disposed on each side of the chamber array and having a dummy nozzle (172,272,372) which does not eject ink. A plurality of trenches (290,390) is formed in the vibrating plate between the respective piezoelectric actuators. Therefore, ink can be uniformly ejected from the ink ejecting ...

Micro-electromechanical device, liquid discharge head, and method of manufacture therefor

IMPULSE FLUID JET APPARATUS WITH DEPRIMING PROTECTION

Liquid discharge head, head cartridge provided with such head, liquid discharge apparatus, and method for discharging liquid

A liquid discharge head comprises a separation member (31) for separating the discharge liquid flow paths (14) communicated with discharge ports (18) for discharging discharge liquid to enable discharge liquid to flow, and the bubbling liquid flow paths (16) to enable bubbling liquid to flow, which is provided with the bubble generating areas (11) for creating bubbles (40) used for discharging discharge liquid from the discharge ports (18). This separation member (31) is provided with the opening portions positioned to face the bubble generating areas (11), and displacement members (25,26) provided for the separation member (31) corresponding to the openings, having the free ends to be displaced by bubbles created on the bubble generating areas (11) provided for the separation member (31). Then, with no bubbles created on the bubble generating areas (11), the displacement members (25,26) interrupt the opening portions, and with bubbles (40) created thereon, the free ends of the displacement ...

Ink jet type recording apparatus

Micro-electromechanical device, liquid discharge head, and method of manufacture therefor

A micro-electromechanical device comprises a movable member (6) having a fixedly supporting portion (6c) and movable portion (6b), and a substrate (1) for having the movable member which is supported in a state having a specific gap with the substrate. For this device, a metallic layer which provides the gap for the movable portion is covered by the fixedly supporting portion of the movable member, and remains to be used as a wiring layer. The wiring layer is electrically connected with a plurality of wirings provided for the substrate. With the structure thus arranged, the electric resistance is made significantly small. The electrical efficiency is enhanced accordingly. Also, the apparatus (for example a thermal ink-jet printhead) that adopts this device is made smaller, and the costs of manufacture thereof is made lower as well.

INK JET HEAD

PURPOSE: To make the prevention of ink backflow possible with a simple flow path structure by providing a conductive ink, generating an electric current traversing across an ink flow path, and also a magnetic field in a vertical direction to said electric current and injecting an accelerated ink to a nozzle. CONSTITUTION: Electrodes 13, 13' are arranged in a mutually opposite position on the inner wall of a case 15 on both sides of an ink flow path 12, and a voltage is applied at the time of printing. A magnetic field generation means 14 is, for instance, composed of a pair of magnets 14A, 14B, and generates a magnetic field which traverses an ink flow path 12 in the opposite and vertical directions of the electrodes 13, 13'. When printing is performed, a voltage is applied between the electrodes 13, 13' under the actuation of the magnetic field generation means 14, and an electric current and magnetic field which traverse the ink flow path 12 crossing each other at right angles. Then a ...

INK JET RECORDING HEAD

PURPOSE: To minimize the reflection of a pressure wave in a pressure chamber and to continuously stably inject ink by holding the width of an ink supply port in a specific dimensional relation to the width of the chamber. CONSTITUTION: The pressure chamber 1 of an ink jet recording head is composed of a cylindrical glass tube 2. The end of the tube 2 is formed in a conical shape, an orifice 3 is formed at its end, and its rear end is opened by reducing the inner diameter of the tube 2 to a diameter of d/2±30%. The orifice 3 is formed in a circular shape, and a meniscus 8 is formed at this part. When a drive signal of injecting ink is applied once to a piezoelectric element 4, the retreating amount (x) of the meniscus 8 is abruptly reduced, an ink droplet 6 is injected, the meniscus is then largely retreated, and then returned to its original state. Thus, since the retreating peak is only one, the reflection of a pressure wave at the rear end of the chamber can be minimized. COPYRIGHT: ( ...

TINTENSTRAHL-EJEKTOR MIT RUECKSCHLAGVENTILEN ZUM VERMEIDEN DES EINZIEHENS VON LUFT

TINTENSTRAHLDRUCKKOPF, TINTENSTRAHLDRUCKER UND VERFAHREN ZU SEINER ANSTEUERUNG

Tintenzufuhrbauteil für eine Tintenstrahldruckvorrichtung

FLÜSSIGKEITSABGABEKOPF, FLÜSSIGKEITSABGABEVORRICHTUNG UND BILDERZEUGUNGSVORRICHTUNG

Liquid ejection head and image forming apparatus including the liquid ejection head

A liquid ejection head includes a common-chamber formation member including a common chamber to supply liquid to pressure chambers communicating nozzles for ejecting liquid droplets, a flexible thin-film member to form part of a wall face of the common chamber, and a thin-film support member bonded to the thin-film member with glue. The support member has an opening or a recessed portion at least partially having a shape that is broad in an area proximal to a first surface of the support member bonded to the thin-film member and becomes narrower as an area of the opening or the recessed portion is more distant from the first surface. The opening or the recessed portion is sealed with the thin-film member. A portion of the thin-film member corresponding to the opening or the recessed portion has the glue on only a periphery area of the portion that contacts the support member.

Liquid ejection head and liquid ejection apparatus

A liquid ejection head includes a nozzle plate on which nozzle openings for ejecting liquid are provided, a flow path formation substrate on which pressure generation chambers communicating with the nozzle openings are provided, communicating portions in which the liquid to be supplied to the pressure generation chambers is stored, and piezoelectric elements which generate pressure change in the liquid in the pressure generation chambers. In the liquid ejection head, a thermistor is arranged on a surface of the flow path formation substrate at an opposite side to the nozzle openings and one lead wiring of the thermistor is connected to wiring layers which are formed on the surface of the flow path formation substrate in a state where one side ends of the wiring layers face to the communicating portions.

Method of manufacturing a liquid jet head

Provided is a method of manufacturing a liquid jet head ( 1 ), the method including: a laminated substrate forming step (S 1 ) of forming a laminated substrate ( 4 ) by bonding a plurality of piezoelectric substrates ( 2 ), which are made of a high dielectric material and have side surfaces joined to each other, onto a base substrate ( 3 ) made of a low dielectric material; a groove forming step (S 3 ) of forming, in a top surface of the laminated substrate ( 4 ), a plurality of grooves ( 7 ) having a depth reaching to the base substrate ( 3 ) and arranged in parallel to a longitudinal direction of the joined side surfaces of the plurality of piezoelectric substrates ( 2 ), and removing the joined side surfaces when the plurality of grooves ( 7 ) are formed; and an electrode forming step (S 4 ) of forming drive electrodes ( 13 ) on side surfaces of the plurality of grooves ( 7 ).

Liquid jet head

A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head includes a substrate in which pressure generation chambers that communicate with corresponding nozzle openings are formed, and piezoelectric elements having a piezoelectric material layer, a first electrode formed on the side of the substrate that faces the piezoelectric material layer, and second electrodes formed on the opposite side of the piezoelectric material layer as the side on which the first electrode is formed; the piezoelectric material layer is formed upon the entirety of the first electrode. The second electrodes are formed in correspondence with respective pressure generation chambers, and the second electrodes are formed separated from each other by regions on the piezoelectric material layer formed in a continuous manner.

Liquid droplet discharge head, method of manufacturing liquid droplet discharge head, and liquid droplet discharge device

In a liquid droplet discharge head, a first groove-shaped cavity is formed on a cavity plate, a second groove-shaped cavity is formed on a nozzle plate in addition to nozzle holes, when bonding the cavity plate and the nozzle plate to each other, the first groove-shaped cavity and the second groove-shaped cavity overlap to form a pressure chamber.

Inkjet print head

There is provided an inkjet print head including: a nozzle substrate having a nozzle and a pressure chamber formed therein; and a vibrating substrate coupled to the nozzle substrate and transferring pressure from a piezoelectric actuator to the pressure chamber, wherein the vibrating substrate has a plurality of pores absorbing a pressure wave generated in a process of discharging ink.

Piezoelectric film, ink jet head, method of forming image by the ink jet head, angular velocity sensor, method of measuring angular velocity by the angular velocity sensor, piezoelectric generating element, and method of generating electric power using the piezoelectric generating element

The present invention provides a non-lead piezoelectric film having high crystalline orientation, the low dielectric loss, the high polarization-disappear temperature, the high piezoelectric constant, and the high linearity between an applied electric field and an amount of displacement. The present invention is a piezoelectric film comprising: a Na x La 1-x+y Ni 1-y O 3-x layer having only an (001) orientation and a (1-α) (Bi, Na, Ba) TiO 3 -αBiQO 3 layer having only an (001) orientation. The (1-α) (Bi, Na, Ba) TiO 3 -αBiQO 3 layer is formed on the Na x La 1-x+y Ni 1-y O 3-x layer. The character of Q represents Fe, Co, Zn 0.5 Ti 0.5 , or Mg 0.5 Ti 0.5 The character of x represents a value of not less than 0.01 and not more than 0.05. The character of y represents a value of not less than 0.05 and not more than 0.20. The character of α represents a value of not less than 0.20 and not more than 0.50.

LIQUID JET HEAD

A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other. 1a damper chamber operable to ease pressure generated when liquid is supplied from a liquid cartridge to said liquid jet head, said damper chamber comprising two sub-chambers separated by a film, wherein one of the sub-chambers is a liquid reservoir operable to store the liquid and the second sub-chamber is an air chamber operable to retain air; anda control path operatively associated with the air chamber and operable to restrict moisture dispersion.. A liquid jet apparatus comprising: This is a continuation of U.S. application Ser. No. 13/741,115 filed Jan. 14, 2013, which is a continuation of Ser. No. 13/463,736 filed May 3, 2012, now U.S. Pat. No. 8,376,540, which is a continuation of U.S. application Ser. No. 13/163,429 filed on Jun. 17, 2011, now U.S. Pat. No. 8,192,007, which is a continuation of U.S. application Ser. No. 12/609,233, now U.S. Pat. No. 7,984,982, filed Oct. 30, 2009 which is a continuation of U.S. application Ser. No. 11/797,651, filed May 4, 2007, now U.S. Pat. No. 7,631,964, which is a continuation of application Ser. No. 11/046,734, filed Feb. 1, 2005, now U.S. Pat. No. 7,229,162, which is a divisional of U.S. application Ser. No. 10/264,323, filed Oct. 4, 2002, now U.S. Pat. No. 7,070,263, which claims priority from Japanese Patent Application Nos. 2001-309106, dated Oct. 4, 2001; 2002-260048, dated Sep. 5, 2002 and 2002-291152, dated Oct. 3, 2002. The entire disclosures of the prior applications are considered part of the disclosure of the accompanying continuation application and are hereby incorporated by reference.1. Field of the InventionThis present invention relates to a liquid jet head, and a ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A flow path forming substrate on which a nozzle plate including a plurality of nozzles is mounted forms a supply flow path from a shared supply path shared for liquid supply to the plurality of nozzles, and an individual supply path branching from the shared supply path and leading to a pressure chamber for each of the nozzles, and forms a collecting flow path from an individual collecting path for each of the nozzles communicated with the communication flow path for each of the nozzles communicating with the nozzles and pressure chambers, and a shared collecting path shared for liquid collection from the plurality of nozzles by joining to the individual collecting path. The shared supply path is liquid-tightly closed by a supply-side flexible plate having flexibility, and the collecting flow path is liquid-tightly closed by a collecting-side flexible plate having flexibility over a flow path area. 1. A liquid ejecting head comprising:a nozzle plate having a plurality of nozzles ejecting a liquid;a flow path forming substrate having a first surface to which the nozzle plate is bonded and including a shared supply path shared for supplying the liquid to the plurality of nozzles, an individual communication flow path communicating the nozzles and the pressure chamber to each other and provided for each of the nozzles, and a shared collecting path shared between the plurality of nozzles for collecting a liquid, which is not discharged from the nozzles, from the individual communication flow path;a first flexible plate bonded to the first surface of the flow path forming substrate so as to constitute a part of a wall of the shared supply path; anda second flexible plate bonded to the first surface of the flow path forming substrate so as to constitute a part of a wall of the shared collecting path.2. The liquid ejecting head according to claim 1 , whereinan opening corresponding to the individual communication flow path sealed by the nozzle plate, an opening ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head has a laminated flow path member on which a supply flow path for individually supplying a plurality of liquids to an element substrate and a collection flow path for individually collecting the liquids are formed. The supply flow path includes a first common supply flow path for horizontally leading a first liquid and a second common supply flow path for horizontally leading a second liquid to positions corresponding to a plurality of element substrates. The first and second common supply flow paths are formed in the same layer of the laminated flow path member. The collection flow path includes a first common collection flow path for horizontally collecting the first liquid and a second common collection flow path for horizontally collecting the second liquid from positions corresponding to the plurality of element substrates. The first and second common collection flow paths are formed in the same layer of the laminated flow path member. 1. A liquid ejecting head comprising:an element substrate having ejecting elements for ejecting a first liquid and ejecting elements for ejecting a second liquid arrayed thereon; anda laminated flow path member formed by laminating a plurality of layers, the laminated flow path member having a supply flow path for individually supplying the first liquid and the second liquid to the element substrate and a collection flow path for individually collecting the first liquid and the second liquid from the element substrate, wherein the supply flow path includes in part a first common supply flow path for leading the first liquid to positions corresponding to a plurality of the element substrates and a second common supply flow path for leading the second liquid to positions corresponding to the plurality of element substrates, the first common supply flow path and the second common supply flow path being formed in a same layer of the plurality of layers forming the laminated flow path member, andthe collection ...

FLOW CHANNEL MEMBER, LIQUID JET HEAD AND LIQUID JET DEVICE

There are provided a flow channel member, a liquid jet head, and a liquid jet device each capable of achieving thickness reduction while ensuring the effective area of a filter. There is included a first flow channel plate provided with a first ink flow channel adapted to communicate an ink tank and a first head chip with each other, the flow channel plate is disposed in a state in which a thickness direction of the flow channel plate crosses a gravitational direction, the first ink flow channel includes a filtration flow channel through which ink flows along the thickness direction of the first flow channel plate, and in which a main filter is disposed, and an upstream flow channel which is communicated with an upstream end of the filtration flow channel, and through which the ink flows along a surface direction of the first flow channel plate, and a reservoir wall part is formed in a part located on a downstream side of the main filter on an inner surface of the filtration flow channel, the reservoir wall part separating between the filtration flow channel and a downstream flow channel, and having a communication flow channel adapted to communicate the filtration flow channel and the downstream flow channel with each other in upper end parts in the gravitational direction. 1. A flow channel member comprising:a flow channel plate provided with a liquid flow channel adapted to communicate a supply source of liquid and a head chip with each other,wherein the flow channel plate is disposed in a state in which a thickness direction of the flow channel plate crosses a gravitational direction, a filtration flow channel through which the liquid flows along the thickness direction of the flow channel plate, and in which a filter adapted to filtrate the liquid is disposed,', 'an upstream flow channel which is communicated with an upstream end of the filtration flow channel, and through which the liquid flows along a surface direction of the flow channel plate, and', 'a ...

LIQUID DISCHARGE HEAD AND COMPLIANCE PLATE

A compliance plate includes a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle, a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film, and a plurality of regions that include a first region and a second region that have a compliance function, the first region and the second region having mutually different characteristic vibration periods. 1. A compliance plate comprising:a flexible film that forms a portion of a wall surface of a liquid storage chamber that is supplied with a liquid that is to be discharged from a nozzle;a support plate that supports the flexible film at an opposite side of the flexible film to the liquid storage chamber and that has an opening portion that exposes the flexible film; a closure plate that closes the opening portion; anda plurality of regions that include a first region and a second region that have a compliance function, the first region and the second region having mutually different characteristic vibration periods.2. The compliance plate according to claim 1 ,wherein the support plate includes bar portions protruding to a side of the opening portion, andwherein the first region and the second region are provided with bar portions that are different in shape between the first region and the second region.3. The compliance plate according to claim 2 ,wherein the support plate includes bar portions protruding into the opening portion from one or both of mutually facing side surfaces of the opening portion, andwherein the first region and the second region are different from each other in position of the bar portions in each region.4. The compliance plate according to claim 2 , wherein the first region and the second region are provided with mutually different numbers of the bar portions.5. The compliance ...

LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC DEVICE

A liquid ejecting head includes a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall, and a piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated, in which the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, and in which when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening. 1. A liquid ejecting head comprising:a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall; anda piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated,wherein the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, andwherein when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening.2. The liquid ejecting head according to claim 1 ,wherein the opening is a parallelogram when viewed in plan view from the lamination direction.3. The liquid ejecting head according to claim 2 ,wherein in at least a portion of the opening, a portion which does not overlap one of the first electrode and the second electrode has the same shape as the opening with a narrower area than the opening.4. The liquid ejecting head ...

Droplet discharging head and image forming apparatus

A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.

Liquid ejecting head and liquid ejecting apparatus

Provided is a liquid ejecting head that includes a manifold which communicates with a plurality of nozzle openings through which liquid is ejected, a compliance portion which constitutes a part of the manifold and is constituted by a film having flexibility, a fixing plate which is fixed to a surface side of the film, which is a side opposite to the manifold, and has an opening formed in an area which constitutes the compliance portion, and a cap member which is fixed to a surface side of the fixing plate, which is a side opposite to the compliance portion, and covers the opening, in which a protrusion portion which regulates adhering of the film to the cap member is provided, in a state where the protrusion portion is not fixed to the fixing plate, in a space formed in a portion between the compliance portion and the cap member.

LIQUID EJECTION HEAD

A liquid ejection head includes: a plurality of individual passages each having a nozzle; a first supply liquid passage communicating with a first inlet of each of the plurality of individual passages; a second supply liquid passage communicating with a second inlet of each of the plurality of individual passages; a first return liquid passage communicating with a first outlet of each of the plurality of individual passages; and a second return liquid passage communicating with a second outlet of each of the plurality of individual passages. 1. A liquid ejection head , comprising:a plurality of individual passages each comprising a nozzle;a first supply liquid passage communicating with a first inlet of each of the plurality of individual passages;a second supply liquid passage communicating with a second inlet of each of the plurality of individual passages;a first return liquid passage communicating with a first outlet of each of the plurality of individual passages; anda second return liquid passage communicating with a second outlet of each of the plurality of individual passages.2. The liquid ejection head according to claim 1 ,wherein the first supply liquid passage, the second supply liquid passage, the first return liquid passage, and the second return liquid passage extend in an extending direction and are arranged in an arrangement direction intersecting the extending direction, andwherein the plurality of individual passages are arranged in the extending direction.3. The liquid ejection head according to claim 2 , wherein the first supply liquid passage and the second supply liquid passage are located respectively on opposite sides of the plurality of individual passages in the arrangement direction.4. The liquid ejection head according to claim 2 , wherein the first return liquid passage and the second return liquid passage are located respectively on opposite sides of the plurality of individual passages in the arrangement direction.5. The liquid ...

Liquid ejection head

A liquid ejection head includes: individual passages each having a nozzle; supply liquid passages each communicating with an individual inlet of a corresponding one of the individual passages; return liquid passages each communicating with an individual outlet of a corresponding one of the individual passages; a first supply coupling liquid passage coupling the supply liquid passages to each other and communicating with a first inlet of each of the supply liquid passages; and a second supply coupling liquid passage coupling the supply liquid passages to each other and communicating with a second inlet of each of the supply liquid passages. In each of the supply liquid passages, the individual inlet of the corresponding one of the individual passages is located between the first inlet and the second inlet.

LIQUID EJECTION HEAD

A liquid ejection head includes: individual passages; supply liquid passages; return liquid passages; a supply coupling liquid passage; and a return coupling liquid passage. The supply liquid passages and the return liquid passages extend in an extending direction and are arranged in an arrangement direction. The supply coupling liquid passage and the return coupling liquid passage extend in the arrangement direction, are located on one side of the supply liquid passages and the return liquid passages in the extending direction, and include an overlapping portion at which the supply coupling liquid passage and the return coupling liquid passage overlap each other when viewed in an orthogonal direction. A damper film is provided between the supply coupling liquid passage and the return coupling liquid passage in the orthogonal direction at at least a portion of the overlapping portion. 1. A liquid ejection head , comprising:a plurality of individual passages each comprising a nozzle;a plurality of supply liquid passages each communicating with an inlet of a corresponding one of the plurality of individual passages;a plurality of return liquid passages each communicating with an outlet of a corresponding one of the plurality of individual passages;a supply coupling liquid passage coupling the plurality of supply liquid passages to each other and communicating with an inlet of each of the plurality of supply liquid passages; anda return coupling liquid passage coupling the plurality of return liquid passages to each other and communicating with an outlet of each of the plurality of return liquid passages,wherein the plurality of supply liquid passages and the plurality of return liquid passages extend in an extending direction and are arranged in an arrangement direction intersecting the extending direction,wherein the supply coupling liquid passage and the return coupling liquid passage extend in the arrangement direction, are located on one side of the plurality of ...

INK JET HEAD AND INK JET RECORDING APPARATUS

An object of the present invention is to provide an ink jet head and the like that are small, are capable of achieving a higher resolution, increasing ejection stability, and lowering production costs, and include flow paths capable of circulating ink. An ink jet head of the present invention includes: a head chip including nozzles, pressure chambers that communicate with the respective nozzles, piezoelectric elements that correspond to the respective pressure chambers, discrete circulation flow paths that branch from ink flow paths extending from inlets of the pressure chambers to outlets of the nozzles and are capable of discharging the ink in the pressure chambers, and a common circulation flow path with which at least two of the discrete circulation flow paths communicate; and a common supply liquid chamber that is provided on the upper surface of the head chip, and stores the ink to be commonly supplied to the respective pressure chambers through ink supply holes formed in the upper surface of the head chip. 1. An ink jet head comprising: a plurality of nozzles that eject ink;', 'a plurality of pressure chambers that communicate with the respective nozzles, and store ink;', 'a plurality of pressure generating means that correspond to the respective pressure chambers, and apply pressure to the ink in the corresponding pressure chambers;', 'a plurality of discrete circulation flow paths that branch from ink flow paths extending from inlets of the pressure chambers to outlets of the nozzles, and are capable of discharging the ink in the pressure chambers; and', 'a common circulation flow path with which at least two of the discrete circulation flow paths communicate; and, 'a head chip includinga common supply liquid chamber that is provided on an upper surface of the head chip, and stores ink to be commonly supplied to the respective pressure chambers through a plurality of ink supply holes formed in the upper surface of the head chip.2. The ink jet head according ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head includes an ejecting unit including first and second pressure chambers respectively communicating with first and second nozzles that eject a liquid, a first wall portion separating the first and second pressure chambers, first and second driving elements that respectively vary pressures of the first and second pressure chambers; a protection substrate disposed at the ejecting unit on a side opposite to the first and second nozzles; and a support portion formed to extend from a surface of the protection substrate on a side near the ejecting unit to the ejecting unit. The support portion overlaps the first wall portion in plan view in a direction perpendicular to the protection substrate, and a portion of the support portion that is in contact with a surface of the ejecting unit has a larger width than a width of the first wall portion. 1. A liquid ejecting head comprising: a first pressure chamber communicating with a first nozzle that ejects a liquid,', 'a second pressure chamber communicating with a second nozzle that ejects the liquid,', 'a first wall portion separating the first pressure chamber and the second pressure chamber,', 'a first driving element that varies a pressure of the first pressure chamber, and', 'a second driving element that varies a pressure of the second pressure chamber;, 'an ejecting unit including'}a protection substrate disposed at the ejecting unit on a side opposite to the first nozzle and the second nozzle; anda support portion formed to extend from a surface of the protection substrate on a side near the ejecting unit to the ejecting unit, whereinthe support portion overlaps the first wall portion in plan view in a direction perpendicular to the protection substrate, and a portion of the support portion that is in contact with a surface of the ejecting unit has a larger width than a width of the first wall portion.2. The liquid ejecting head according to claim 1 , whereinthe support portion has a larger Young's ...

Ink Jet Recording Apparatus

An ink jet recording apparatus includes a discharge head including a nozzle discharging ink to a recording medium and a cap capable of covering the nozzle of the discharge head. The ink contains water, a colorant, and an organic compound which is solid at 25.0° C. and which has an octanol/water distribution coefficient of 0.0 or less. The cap includes no ink absorber. 1. An ink jet recording apparatus comprising:a discharge head including a nozzle discharging ink to a recording medium; anda cap configured to cover the nozzle of the discharge head, wherein the ink contains water, a colorant, and an organic compound which is solid at 25.0° C. and which has an octanol/water distribution coefficient of 0.0 or less and the cap includes no ink absorber.2. The ink jet recording apparatus according to claim 1 , wherein the discharge head is reciprocated in a main scanning direction and the recording medium is conveyed in a sub-scanning direction crossing the main scanning direction claim 1 , whereby an image is formed on the recording medium claim 1 , and the area that the recording medium is conveyed per unit time is 15.0 m/h or more.3. The ink jet recording apparatus according to claim 1 , further comprising a platen claim 1 , wherein a surface of the platen faces a nozzle-formed surface provided with the nozzle claim 1 , the recording medium is conveyed between the platen surface and the nozzle-formed surface claim 1 , and the distance between the platen surface and the nozzle-formed surface is 1.5 mm or more.4. The ink jet recording apparatus according to claim 1 , wherein the organic compound is selected from trimethylolpropane claim 1 , polyvinylpyrrolidone claim 1 , urea claim 1 , and thiourea.5. The ink jet recording apparatus according to claim 1 , wherein the ink further contains a humectant.6. The ink jet recording apparatus according to claim 1 , wherein the content of the organic compound in the ink is 3.0% by mass to 20.0% by mass with respect to the whole of ...

LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE RECORDING APPARATUS

According to one or more embodiments, a liquid discharge head comprises a substrate, a nozzle plate, and a damper member. The substrate comprises a plurality of pressure chambers. The nozzle plate is provided on a first surface of the substrate and comprises a plurality of nozzles, each of the plurality of nozzles aligned with a corresponding one of the plurality of pressure chambers. The damper member is provided on a second surface of the substrate and comprises a pressure wave absorbing material. 1. A liquid discharge head , comprising:a substrate comprising a plurality of pressure chambers;a nozzle plate on a first surface of the substrate and comprising a plurality of nozzles, each of the plurality of nozzles aligned with a corresponding one of the plurality of pressure chambers; anda damper member on a second surface of the substrate and comprising a pressure wave absorbing material, portions of the damper member being on the second surface at positions between adjacent pressure chambers.2. The liquid discharge head according to claim 1 , wherein the damper member comprises a plurality of damper chambers respectively facing the plurality of pressure chambers.3. The liquid discharge head according to claim 1 , wherein the damper member is a material that is different from a material of the substrate.4. The liquid discharge head according to claim 3 , wherein the material has a reflectance R of 0.5≤R≤2 when a specific acoustic impedance of the damping member is represented by Z1 claim 3 , a specific acoustic impedance of the liquid supplied in the pressure chamber is represented by Z2 claim 3 , and the reflectance R is calculated as (Z2−Z1)/(Z1+Z2).5. The liquid discharge head according to claim 1 , wherein the pressure wave absorbing material of the damper member has a Young's modulus less than that of a material forming the substrate.6. The liquid discharge head according to claim 1 , wherein the pressure wave absorbing material is an elastically deformable ...

Liquid ejecting apparatus

Provided is a liquid ejecting apparatus capable of suppressing ink from remaining on a nozzle surface. A liquid ejecting apparatus includes a head unit 16 capable of ejecting a liquid from a nozzle 27 provided in a nozzle surface 22 a of a nozzle plate 22 , an anchoring plate 17 in which the head unit 16 is anchored and that is provided with an opening region 17 a that exposes the nozzle surface 22 , and a wiper member 12 that wipes an anchoring plate exposed-surface 17 b located on the opposite side of the head unit 16 of the anchoring plate 17 and the nozzle surface 22 a . When an angle of contact between the nozzle surface 22 a and the liquid is taken as θn, an angle of contact between the anchoring plate exposed-surface 17 b and the liquid is taken as θs, and an angle of contact between the wiper member 12 and the liquid is taken as θw, the relationship θn>θs>θw>90° is fulfilled.

LIQUID DISCHARGE HEAD

There is provided a liquid discharge head, including: a piezoelectric body having a plurality of piezoelectric layers stacked on top of each other in a stacking direction; individual electrodes; and a first common electrode. Each of the individual electrodes has a first portion and a second portion arranged in the first direction at an interval, and a third portion coupling the first portion with the second portion. The first common electrode includes a first extending portion as well as first protrusions and second protrusions protruding from the first extending portion. Portions of the first extending portion overlapping in the stacking direction with the third portions are formed having through holes passing through the first common electrode in the stacking direction. 1. A liquid discharge head , comprising:a piezoelectric body including a plurality of piezoelectric layers stacked stacked in a stacking direction, the piezoelectric body having a first end and a second end which are away from each other in a first direction orthogonal to the stacking direction of the piezoelectric layers,a plurality of individual electrodes located on a first surface that is orthogonal to the stacking direction, anda first common electrode located on a second surface that is orthogonal to the stacking direction, the first common electrode being different in a position in the stacking direction from the first surface,wherein each of the individual electrodes includes a first portion and a second portion arranged in the first direction at an interval, and a third portion connecting the first portion and the second portion, the first portion being positioned between the first end and the third portion in the first direction, the third portion being positioned between the first portion and the second portion in the first direction, the second portion being positioned between the third portion and the second end in the first direction,the first portions, the second portions, and the ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head includes nozzles configured to eject liquid, pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid, a first liquid chamber configured to store the liquid to be supplied to the pressure chambers, a second liquid chamber configured to store the liquid that passed through the pressure chambers, first communication paths communicating with the pressure chambers from the first liquid chamber, second communication paths respectively communicating with the second liquid chamber from between the pressure chambers and the nozzles in which flow path resistance in the first communication paths is higher than flow path resistance in the second communication paths. 1. A liquid ejecting head comprising:nozzles configured to eject liquid;pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid;a first liquid chamber that is a common liquid chamber communicating with the pressure chambers;a second liquid chamber that is a common liquid chamber communicating with the pressure chambers;first communication paths communicating with the pressure chambers from the first liquid chamber;second communication paths respectively communicating with the second liquid chamber from between the pressure chambers and the nozzles, whereinflow path resistance in the first communication path is higher than flow path resistance in the second communication path.2. A liquid ejecting head comprising:nozzles configured to eject liquid;pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid;a first liquid chamber configured to store the liquid to be supplied to the pressure chambers;a second liquid chamber configured to store the liquid that passed through the pressure chambers;first communication paths communicating with the pressure chambers from the ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head that includes a first piezoelectric element and a second piezoelectric element, a first wire that extends in a first direction and that electrically couples the first piezoelectric element and a wiring substrate to each other, and a second wire that is adjacent to the first wire in a second direction intersecting the first direction and that extends in the first direction, the second wire electrically coupling the second piezoelectric element and the wiring substrate to each other. A first protrusion is formed on a surface of the first wire in a mounting area to where the wiring substrate is joined, and a second protrusion is formed on a surface of the second wire in the mounting area and at a position different from that of the first protrusion in the first direction. 1. A liquid ejecting head comprising:a first piezoelectric element that ejects a liquid inside a first pressure chamber from a nozzle;a second piezoelectric element that ejects a liquid inside a second pressure chamber from a nozzle;a first wire that extends in a first direction and that electrically couples the first piezoelectric element and a wiring substrate to each other; anda second wire that is adjacent to the first wire in a second direction intersecting the first direction and that extends in the first direction, the second wire electrically coupling the second piezoelectric element and the wiring substrate to each other, whereina first protrusion is formed on a surface of the first wire in a mounting area to where the wiring substrate is joined, anda second protrusion is formed on a surface of the second wire in the mounting area and at a position different from that of the first protrusion in the first direction.2. The liquid ejecting head according to claim 1 , whereina first base and a second base are formed in the mounting area at positions different from each other in the first direction,the first protrusion is a portion of the first wire positioned on a surface ...

Liquid Ejection Head Having Plurality of Sets of Rows of Pressure Chambers, and Capable of Avoiding Mixture of Different Kinds of Liquid

A liquid ejection head includes a plurality of sets of a first row, a second row, and a flow path in communication with the first row and the second row. Each of the plurality of sets are provided for each respective one of a plurality of kinds of liquids different from one another. The first row includes a plurality of first pressure chambers. The second row includes a plurality of second pressure chambers. The second row is positioned beside the first row. The flow path is in communication with the plurality of first pressure chambers and the plurality of second pressure chambers. The flow path includes a plurality of first communication passages, a plurality of second communication passages, a plurality of third communication passages, a plurality of fourth communication passages, a first manifold, a second manifold, and a common manifold. 1. A liquid ejection head comprising:a plurality of sets of a first row, a second row, and a flow path in communication with the first row and the second row, each of the plurality of sets being provided for each respective one of a plurality of kinds of liquids different from one another; wherein:the first row comprises a plurality of first pressure chambers arrayed in line in an array direction;the second row comprises a plurality of second pressure chambers arrayed in line in the array direction, the second row being positioned beside the first row in a widthwise direction perpendicular to the array direction; and a plurality of first communication passages each in communication with each of the first pressure chambers at a position close to the second row in the widthwise direction;', 'a plurality of second communication passages each in communication with each of the first pressure chambers at a position away from the second row in the widthwise direction;', 'a plurality of third communication passages each in communication with each of the second pressure chambers at a position close to the first row in the widthwise ...

LIQUID EJECTING APPARATUS CONTROL METHOD AND LIQUID EJECTING APPARATUS

In a method of controlling a liquid ejecting apparatus, where the liquid ejecting apparatus includes a pressure chamber that communicates with a nozzle that ejects a liquid, a drive element that changes a pressure of the liquid in the pressure chamber, and a drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle, the method includes specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed, and controlling a waveform of the ejection pulse according to the viscosity and the surface tension. 1. A method of controlling a liquid ejecting apparatus , the liquid ejecting apparatus includinga pressure chamber that communicates with a nozzle that ejects a liquid,a drive element that changes a pressure of the liquid in the pressure chamber, anda drive circuit that supplies the drive element with an ejection pulse that generates a change in the pressure that ejects the liquid from the nozzle,the method comprising:specifying a viscosity of the liquid in the nozzle and a surface tension of the liquid in the nozzle from a residual vibration when the pressure of the liquid in the pressure chamber is changed; andcontrolling a waveform of the ejection pulse according to the viscosity and the surface tension.2. A method of controlling a liquid ejecting apparatus according to claim 1 , whereinthe specifying the viscosity includes specifying the viscosity from an attenuation factor of the residual vibration.3. The method of controlling the liquid ejecting apparatus according to claim 2 , whereinthe viscosity specified when the attenuation factor is a first value is less than the viscosity specified when the attenuation factor is a second value that is greater than the first value.4. The method of controlling a liquid ejecting apparatus according to claim 1 , ...

BUBBLER

A cartridge may include a fluid reservoir, a print head to eject fluid from the reservoir through nozzles and bubblers. The print head may include a fluid feed slot to supply fluid from the reservoir to the nozzles. The bubblers are opposite the fluid feed slot. 1. A cartridge comprising:a fluid reservoir;a print head to eject fluid from the reservoir through nozzles, the printhead comprising a fluid feed slot to supply fluid from the reservoir to the nozzles; andbubblers opposite the fluid feed slot.2. The cartridge of claim 1 , wherein the bubblers consist of a first bubbler opposite the fluid feed slot and a second bubbler opposite the fluid feed slot.3. The cartridge of claim 1 , wherein one or more of the bubblers have an elongated cross-section.4. The cartridge of claim 3 , wherein one or more the bubblers have a length and a width claim 3 , with the length at least 10 times the width.5. The cartridge of claim 1 , wherein the nozzles are arranged in a row with the nozzles of the row having a centerline-to-centerline pitch and wherein the bubblers comprises a bubbler adjacent the row of nozzles and having an elongated cross-section claim 1 , the bubbler having a length greater than the centerline-to-centerline pitch of the row of nozzles.6. The cartridge of claim 1 , wherein the nozzles each have a diameter and wherein the bubblers comprises a bubbler having an elongated cross-section claim 1 , the bubbler having a length and a width smaller than the length claim 1 , the width being less than the diameter.7. The cartridge of claim 1 , wherein the print head comprises a resistor configured to contact and heat fluid from the reservoir so as to eject fluid from a reservoir through the nozzles.8. The cartridge of further comprising a plate claim 1 , wherein the nozzles and the bubblers extend through the plate.9. The cartridge of claim 1 , wherein the nozzles and the bubblers are in a same plane.10. The cartridge of claim 1 , further comprising a foam-based back ...

Liquid ejecting apparatus

A liquid ejecting apparatus includes a generation unit that generates a driving signal, a discharge portion including a piezoelectric element that is driven by the driving signal, and a detection unit that detects residual vibration occurring in the discharge portion, in a detection period after a driving period during which the piezoelectric element is driven by the driving signal, in which the generation unit maintains a potential of the driving signal at a first potential in a first period, maintains the potential of the driving signal at a second potential in a second period, maintains the potential of the driving signal at a third potential in a third period, and maintains the potential of the driving signal at a detection potential in the detection period, the first potential is a potential between the second potential and the third potential, and the detection potential is a potential between the first potential and the second potential.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head including a first substrate in which a drive element that ejects a liquid from a nozzle, and a first wire electrically coupled to the drive element are formed, a second substrate in which an opposing surface that opposes the first substrate is adhered to the first substrate with an adhesive agent, a second wire being formed in the second substrate, and a protrusion configured to elastically deform, the protrusion being formed between the first substrate and the second substrate and electrically coupling the first wire and the second wire to each other. In the liquid ejecting head, a swelling ratio of the protrusion is larger than a swelling ratio of the adhesive agent.

LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE APPARATUS

A liquid discharge head includes: individual channels respectively including nozzles; a supply channel allowing an outlet of a storage chamber storing a liquid to communicate with an inlet of each of the individual channels; a return channel allowing an outlet of each of the individual channels to communicate with an inlet of the storage chamber; a return filter provided in the return channel; and a return branching channel branching off from a return upstream portion of the return channel. The return upstream portion is positioned upstream of the return filter. 1. A liquid discharge head , comprising:a plurality of individual channels respectively including a plurality of nozzles;a supply channel allowing an outlet of a storage chamber storing a liquid to communicate with an inlet of each of the individual channels;a return channel allowing an outlet of each of the individual channels to communicate with an inlet of the storage chamber;a return filter provided in the return channel; anda return branching channel branching off from a return upstream portion of the return channel, the return upstream portion being positioned upstream of the return filter.2. The liquid discharge head according to claim 1 , further comprising a supply filter provided in the supply channel.3. The liquid discharge head according to claim 2 , further comprising a supply branching channel branching off from a supply upstream portion of the supply channel claim 2 , the supply upstream portion being positioned upstream of the supply filter.4. The liquid discharge head according to claim 3 , wherein the supply upstream portion extends in a first direction claim 3 ,a first end in the first direction of the supply upstream portion is connected to the outlet of the storage chamber, anda second end in the first direction of the supply upstream portion is connected to the supply branching channel.5. The liquid discharge head according to claim 4 , wherein the return upstream portion extends in the ...

LIQUID JETTING APPARATUS

A liquid jetting apparatus comprises a flow passage member which has a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber; a piezoelectric element with which the flow passage member is provided so that the piezoelectric element is overlapped with the pressure chamber; a protective member which is arranged on the flow passage member so that the piezoelectric element is covered therewith; and a supply member which is formed with a supply flow passage communicated with the liquid supply port of the flow passage member and which is adhered to extend over the flow passage member and the protective member; wherein a layer of a first adhesive to adhere the protective member and the supply member is thicker than a layer of a second adhesive to adhere the flow passage member and the supply member. 1. A liquid jetting apparatus comprising:a flow passage member having a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber;a piezoelectric element provided on the flow passage member to overlap with the pressure chamber;a protective member arranged on the flow passage member to cover the piezoelectric element; anda supply member formed with a supply flow passage communicated with the liquid supply port of the flow passage member, and adhered to the flow passage member and the protective member to extend over the flow passage member and the protective member,wherein a thickness of a layer of a first adhesive adhering the protective member and the supply member is different from a thickness of a layer of a second adhesive adhering the flow passage member and the supply member, anda viscosity before curing of the first adhesive is different from a viscosity before curing of the second adhesive.2. The liquid jetting apparatus according to claim 1 , wherein the viscosity before curing of the first adhesive is greater than the viscosity before curing of the second adhesive.3. ...

Inkjet head and inkjet printer

An inkjet head includes a nozzle plate substrate having a nozzle for ejecting ink toward a recording medium, and an oil repellent layer on a surface of the nozzle plate substrate, the surface facing the recording medium. The oil repellent layer comprises a fluorine-based compound in which neighboring molecules are cross-linked in a direction parallel to the surface, and cross-links of the neighboring molecules are resistant to structural change when subjected to rubbing by an ink wiping blade.

FLUID EJECTION DEVICES WITH REDUCED CROSSTALK

A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel. 1. (canceled)2. A method comprising:forming a feed channel and multiple pumping chambers in a substrate, wherein the feed channel is fluidically connected to the multiple pumping chambers;forming multiple nozzles in the substrate, each nozzle defining an opening in a bottom surface of the substrate, such that each nozzle is fluidically connected to a corresponding one of the pumping chambers;forming an actuator for each pumping chamber, the actuator configured to cause fluid to be ejected from the pumping chamber and corresponding nozzle; andforming a compliant structure comprising one or more recesses such that a first opening of each recess is defined on a wall of the feed channel and such that each recess is fluidically connected to a second opening defined in the bottom surface of the substrate, wherein the compliant structure is more compliant than the wall of the feed channel.3. The method of claim 2 , comprising forming the multiple nozzles to be arranged along a line claim 2 , and wherein the feed channel is laterally offset from the line.4. The method of claim 2 , wherein the recesses comprise dummy nozzles formed in a bottom wall of the feed channel such that the second openings defined in the bottom surface of the substrate are a second opening of each recess.5. The method of claim 4 , wherein forming the compliant structure comprises forming each recess such that the first opening is larger than the second opening.6. The method of claim 4 , wherein forming the compliant structure comprises ...

Inkjet head and method for driving inkjet head

An inkjet head includes pressure chambers arranged in 2 or more rows and a common ink chamber connected to all the pressure chambers, wherein each of the pressure chambers includes a damper member inside of the common ink chamber of the inkjet head for commonly supplying an ink from the common ink chamber via an ink inlet which faces the common ink chamber, and the shortest distance between the damper member and the ink inlet is made shorter than the distance between ink inlets in adjacent rows of pressure chambers.

LIQUID EJECTING APPARATUS

Provided is a liquid ejecting apparatus capable of suppressing ink from remaining on a nozzle surface. 1. (canceled)2. A recording head , comprising:a plate comprising a first surface and a second surface; a pressure chamber formation plate provided with a plurality of pressure chambers;', 'first flow paths of the liquid in communication with the pressure chambers;', 'piezoelectric elements for ejecting liquid of the pressure chambers; and', 'a protective plate covering the piezoelectric elements in a plan view seen from a first axis direction; and, 'a head unit connected to the first surface, the head unit comprising a third surface connected to the first surface; and', 'a cavity recessed in the third surface and defined by a first wall and second wall, the first wall surrounding the protective plate in the plan view, the second wall defining a second flow path of the liquid in communication with the first flow path, and the second wall overlapping the protective plate in the plan view., 'a case comprising3. The recording head according to claim 2 , wherein the protective plate further comprises a through-cavity for containing a driving IC.4. The recording head according to claim 2 , wherein the head unit further comprises a common chamber between the first flow paths and the second flow path.5. The recording head according to claim 3 , wherein the head unit further comprises a common chamber between the first flow paths and the second flow path.6. The recording head according to claim 3 , wherein the protective plate comprises a relief cavity covering the piezoelectric elements.7. The recording head according to claim 2 , wherein the protective plate comprises a silicon single-crystal substrate.8. The recording head according to claim 2 , wherein the first electrode is provided on an insulating film.9. The recording head according to claim 2 , wherein the first electrode is provided on zirconium oxide.10. The recording head according to claim 2 , wherein the ...

LIQUID EJECTION HEAD AND METHOD FOR PRODUCING THE SAME

A liquid ejection head includes a laminated body including a first plate having a plurality of ejection nozzles for ejecting a liquid and made from a resin material and a second plate having a plurality of through-holes communicating with the corresponding ejection nozzles and made from a metal material. The laminated body has a plurality of projection parts formed along the array direction Y of the ejection nozzles and having a curved dome shape projecting in the direction from the second plate to the first plate. The second plate has a plurality of through-slits formed adjacent to the projection parts. 1. A liquid ejection head comprising:a laminated body including a first plate having a plurality of ejection nozzles configured to eject a liquid and a second plate having a plurality of through-holes communicating with the corresponding ejection nozzles, the laminated body having a plurality of projection parts formed along an array direction of the ejection nozzles and curved to project in a direction from the second plate to the first plate; anda piezoelectric actuator that generates pressure for ejecting the liquid from the ejection nozzles,wherein the second plate has a plurality of through-slits formed adjacent to the projection parts and having a longer side and a shorter side when the second plate is viewed from an ejection nozzle surface side.2. The liquid ejection head according to claim 1 , wherein the through-slits include a plurality of first through-slits having the longer side extending along the array direction and arranged at both sides of the projection parts in a direction orthogonal to the array direction.3. The liquid ejection head according to claim 2 , wherein the first plate has a plurality of concave portions that are formed on a joining surface of the first plate to the second plate and are arranged to interpose the projection parts therebetween in the direction orthogonal to the array direction.4. The liquid ejection head according to ...

DAMPER DEVICE, INK SUPPLY SYSTEM, AND INKJET PRINTER

A damper device includes an upstream damper provided upstream of an ink head and a downstream damper provided downstream of the ink head. The upstream damper includes an upstream ink chamber communicating with an upstream inflow port and an upstream outflow port and storing ink, and an upstream detector that detects an amount of ink stored in the upstream ink chamber. The downstream damper includes a downstream ink chamber communicating with a downstream inflow port and a downstream outflow port and storing ink, and a downstream detector that detects an amount of ink stored in the downstream ink chamber. 1. A damper device for use in an inkjet printer including an ink head that ejects ink , an upstream flow channel connected to the ink head and through which the ink flows into the ink head , and a downstream flow channel connected to the ink head and into which the ink flows from the ink head , the damper device comprising:an upstream damper provided in the upstream flow channel; anda downstream damper provided in the downstream flow channel; whereinthe upstream damper includes:an upstream inflow port allowing the ink to flow into the upstream damper;an upstream ink chamber communicating with the upstream inflow port and storing the ink;an upstream outflow port communicating with the upstream ink chamber and allowing the ink to flow out of the upstream damper; andan upstream detector detecting an amount of the ink stored in the upstream ink chamber; andthe downstream damper includes:a downstream inflow port allowing the ink to flow into the downstream damper;a downstream ink chamber communicating with the downstream inflow port and storing the ink;a downstream outflow port communicating with the downstream ink chamber and allowing the ink to flow out of the downstream damper; anda downstream detector detecting an amount of the ink stored in the downstream ink chamber.2. The damper device according to claim 1 , wherein the downstream ink chamber includes:a first ...

LIQUID EJECTING HEAD, LIQUID EJECTING APPARATUS, AND PIEZOELECTRIC DEVICE

A liquid ejecting head includes a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall, and a piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated, in which the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, and in which when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening. 1. A liquid ejecting head comprising:a flow path forming substrate in which a pressure generating chamber which communicates with a nozzle which ejects a liquid is formed by a partitioning wall; anda piezoelectric actuator in which a first electrode, a piezoelectric layer, and a second electrode are laminated,wherein the piezoelectric layer includes a region which is interposed between the first electrode and the second electrode in a lamination direction, andwherein when viewed in plan view from the lamination direction, the region overlaps at least a portion of the edges of each side of an opening of the pressure generating chamber on the piezoelectric actuator side and does not overlap one of the first electrode and the second electrode in at least a portion of the opening.2. The liquid ejecting head according to claim 1 ,wherein the opening is a parallelogram when viewed in plan view from the lamination direction.3. The liquid ejecting head according to claim 2 ,wherein in at least a portion of the opening, a portion which does not overlap one of the first electrode and the second electrode has the same shape as the opening with a narrower area than the opening.4. The liquid ejecting head ...

LOW COST DAMPER

A damper for a continuous ink jet printer, comprising a fluid receiving chamber (), comprising at least a lateral wall (), a fluid inlet (), and a fluid outlet (), and at least one membrane (), the membrane being in a material having a Young modulus between 0.5 MPa and 1000 MPa, the membrane being deformed under the influence of a pressure variation in the first portion. 1. A damper for a continuous ink jet printer , comprising a fluid receiving chamber , comprising at least a lateral wall , a fluid inlet , and a fluid outlet , and at least one membrane , said membrane being in a material having a Young modulus between 0.5 MPa and 1000 MPa , said membrane being deformed under the influence of a pressure variation in said first portion.2. A damper according to claim 1 , said membrane having a Young modulus between 50 MPa and 1000 MPa claim 1 , both sides of said membrane being flat.3. A damper according to claim 2 , said membrane being made of PEEK.4. A damper according to claim 2 , further comprising a sealing member between said membrane and said lateral wall.5. A damper according to claim 1 , further comprising a second chamber claim 1 , said membrane being comprised between said fluid receiving chamber and said second chamber.6. A damper according to claim 1 , said membrane having a Young modulus between 0.5 MPa and 10 MPa claim 1 , said damper further comprising a second chamber claim 1 , said membrane being comprised between said fluid receiving chamber claim 1 , and said second chamber claim 1 , the side of said membrane turned towards said second chamber further comprising damping means protruding from said membrane.7. A damper according to claim 6 , said membrane being made of a hyperelastic material claim 6 , such as comprising at least elastomer or EPDM or Teflon.8. A damper according to claim 6 , said membrane forming a seal between said fluid receiving chamber and an outside atmosphere of the damper.9. A damper according to claim 1 , said lateral wall ...

INK DISCHARGE DEVICE AND IMAGE FORMING APPARATUS

An ink discharge device includes a recording head and a damper. The recording head has a nozzle which discharges an ink. The damper reduces pressure variation of an ink in the recording head. The damper includes a damper body, a film and a restricting member. The damper body has a damper chamber. The film is deformed according to the pressure variation of an ink in the damper chamber and makes a volume of the damper chamber change. The restricting member faces to the film and restricts deforming of the film in a direction in which the volume of the damper chamber is increased. 1. An ink discharge device comprising:a recording head having a nozzle which discharges an ink; anda damper reducing pressure variation of the ink in the recording head,wherein the damper includes:a damper body having a damper chamber;a film deforming according to pressure variation of the ink in the damper chamber and making a volume of the damper chamber change; anda restricting member facing to the film and restricting deforming of the film in a direction in which the volume of the damper chamber is increased.2. The ink discharge device according to claim 1 , whereinthe restricting member faces to the film via a gap in a state that the film is formed in a flat board shape.3. The ink discharge device according to claim 2 , whereina width of the gap in a direction orthogonal to the film becomes wider from an outer peripheral side toward a center side of the film, in a state that the film is formed in a flat board shape.4. The ink discharge device according to claim 2 , whereinthe restricting member has a ventilation hole which makes an outer space of the damper and the gap communicate.5. The ink discharge device according to claim 1 , whereinthe damper further includes a pair of sandwiching plates sandwiching the film,the damper body and the restricting member sandwich the sandwiching plates,the restricting member includes:a contacting part being in contact with one of the sandwiching plates; ...

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head includes a nozzle formation surface disposed between a first roller and a second roller in a medium transport direction, a first positioning portion used for positioning with respect to a first head holding member provided in a first liquid ejecting apparatus in which a distance between the first roller and the second roller in the medium transport direction is set to a first distance, and a second positioning portion used for positioning with respect to a second head holding member provided in a second liquid ejecting apparatus in which the distance between the first roller and the second roller in the medium transport direction is set to a second distance being different than the first distance.

Device and method for cleaning and/or operating an ink-jet printer head equipped with an upstream pressure absorber

This invention relates to a device for operating and/or cleaning an ink or ink-jet printer head equipped with an upstream pressure absorber, the pressure absorber comprises a closed damper chamber that is at least partially limited by a damper film. A refill valve is arranged in the damper chamber and is designed to refill the damper chamber with ink in response to a curvature of the damper film in the damper chamber. A controllable device is arranged outside of the damper chamber for exerting an external pressure on at least one area of the damper film limiting the damper chamber in order to open the refill valve arranged in the damper chamber and also to create a continuously open channel through the pressure absorber for cleaning the ink-jet printer head and/or to exert an adjustable pressure on the refill valve arranged in the damper chamber.

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head includes nozzles configured to eject liquid, pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid, a first liquid chamber configured to store the liquid to be supplied to the pressure chambers, a second liquid chamber configured to store the liquid that passed through the pressure chambers, first communication paths communicating with the pressure chambers from the first liquid chamber, second communication paths respectively communicating with the second liquid chamber from between the pressure chambers and the nozzles in which flow path resistance in the first communication paths is higher than flow path resistance in the second communication paths. 1. A liquid ejecting head comprising:nozzles configured to eject liquid;pressure chambers communicating with the nozzles, the pressure chambers being configured to generate pressure for ejecting the liquid;a first liquid chamber configured to store the liquid to be supplied to the pressure chambers;a second liquid chamber configured to store the liquid that passed through the pressure chambers;first communication paths communicating with the pressure chambers from the first liquid chamber;second communication paths respectively communicating with the second liquid chamber from between the pressure chambers and the nozzles, whereinflow path resistance in the first communication path is higher than flow path resistance in the second communication path,wherein inertance in the second communication path is higher than inertance in the nozzle corresponding to the second communication path.2. The liquid ejecting head according to claim 1 , wherein the second communication path communicates with a nozzle communication path that communicates with the pressure chamber and the nozzle claim 1 , and a flow-path cross-sectional area of the second communication path is smaller than a flow-path cross-sectional area of the nozzle ...

FILLING APPARATUS AND FILLING METHOD

A filling apparatus that fills a container provided with an interior space, an opening through which the interior space and the outside communicate with each other, and a bottom surface, with a liquid absorber having a water absorbent resin absorbing a liquid, the apparatus includes a stage on which the container is placed, and a vibration applying portion that applies a vibration to the container placed on the stage, in which the vibration is applied as a vibration plane formed in an angle range in which an angle to a horizontal plane is within 0°±30°. 1. A filling apparatus that fills a container provided with an interior space , an opening through which the interior space and the outside communicate with each other , and a bottom surface , with a liquid absorber having a water absorbent resin absorbing a liquid , the apparatus comprising:a stage on which the container is placed; anda vibration applying portion that applies a vibration to the container placed on the stage, whereinthe vibration is applied as a vibration plane formed in an angle range in which an angle to a horizontal plane is within 0°±30°.2. The filling apparatus according to claim 1 , whereina frequency of the vibration is 0.5 Hz or more and 100 Hz or less.3. The filling apparatus according to claim 1 , whereinthe vibration applying portion applies a vibration in a first direction and a vibration in a second direction in a time division manner, when two directions intersecting each other in a plane of the vibration plane are defined as the first direction and the second direction.4. The filling apparatus according to claim 3 , whereinan angle between a principal axis of inertia of the bottom surface and a translation vector representing the vibration in the first direction is 30° or less, when the translation vector is projected onto the bottom surface.5. The filling apparatus according to claim 1 , whereinthe vibration applying portion simultaneously applies a vibration in a first direction and ...

LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS

A liquid ejecting head includes a flow channel substrate and piezoelectric elements, with a diaphragm between the piezoelectric elements and the flow channel substrate. The flow channel substrate has pressure chambers lined up in a first direction with walls therebetween. Each piezoelectric element includes a first electrode, a piezoelectric layer and a second electrode. Each piezoelectric element has a piezoelectrically active portion, a region in which the piezoelectric layer is sandwiched between the first electrode and the second electrode, and are provided in regions facing the pressure chambers. The liquid ejecting head further includes holding members joined the diaphragm facing the walls using an adhesive agent. The width of the holding members is equivalent to or larger than the width of the walls. The width of an adhesive agent with which the holding members are joined to the diaphragm is equal to or smaller than the width of the walls. 1. A liquid ejecting head comprising:a flow channel substrate including pressure chambers lined up in a first direction with walls therebetween, the pressure chambers communicating with nozzle openings, openings through which a liquid is ejected; andpiezoelectric elements on one side of the flow channel substrate with a diaphragm between the piezoelectric elements and the flow channel substrate, each piezoelectric element including a first electrode, a piezoelectric layer above the first electrode, and a second electrode above the piezoelectric layer, wherein:each piezoelectric element has a piezoelectrically active portion, a region in which the piezoelectric layer is sandwiched between the first electrode and the second electrode, and the piezoelectrically active portions are provided in regions facing the pressure chambers;the liquid ejecting head further includes holding members joined one-to-one to regions of the diaphragm facing the walls between the pressure chambers using an adhesive agent; a width, or a dimension ...

PRINTING FLUID CONTAINER

In one example, a container for holding printing fluid includes a chamber to hold a printing fluid and an inelastic, expandable, and contractible bag occupying space in the chamber. The exterior of the bag is exposed to an interior of the chamber and an interior of the bag is sealed against the interior of the chamber and vented to the atmosphere. 1. A printing fluid container , comprising:a chamber to hold a printing fluid; andan inelastic, expandable, and contractible bag occupying space in the chamber, an exterior of the bag exposed to an interior of the chamber and an interior of the bag sealed against the interior of the chamber and vented to the atmosphere.2. The container of claim 1 , where the bag is fully expandable when a pressure inside the chamber is less than 0 gage.3. The container of claim 1 , where a volume of the bag is unrestrained in the chamber except by fluid pressure.4. The container of claim 1 , where the bag is deflatable at pressures inside the chamber above 0 gage.5. The container of claim 1 , including printing fluid in the chamber.6. A printing fluid container claim 1 , comprising:a chamber to hold a printing fluid; and{'sub': 2', '2, 'an inflatable and deflatable air bag inside the chamber, the air bag being fully inflatable when a pressure inside the chamber is 0inHO to −15inHO.'}7. The container of claim 6 , where the bag is deflatable at pressures inside the chamber above 0 gage.8. The container of claim 7 , where the bag is inelastic.9. The container of claim 8 , where a volume of the bag is unrestrained in the chamber except by fluid pressure.10. The container of claim 9 , including printing fluid in the chamber.11. A printing fluid container claim 9 , comprising:a first chamber to hold printing fluid;a second chamber to receive printing fluid from the first chamber and to supply printing fluid to a component downstream from the container;a regulator to regulate the flow of printing fluid from the first chamber into the second ...

Flow path members, liquid ejecting heads, and liquid ejecting apparatuses

A flow path member includes a gas chamber which allows inflow and outflow of gas, and a flexible member that partitions part of the gas chamber and deforms in response to pressure change in the gas chamber, wherein the flexible member has a contact section configured to abut another object, the contact section being disposed inside a regulation section in which deformation is regulated, and the contact section abuts the another object to seal the another object during at least one of depressurization and pressurization of the gas chamber.

Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element

A liquid ejecting head includes a piezoelectric element including a first electrode, a piezoelectric layer overlying the first electrode with an orientation control layer therebetween, and a second electrode overlying the piezoelectric layer. The piezoelectric layer is made of a complex oxide having a perovskite structure including an A site containing lead and a B site containing zirconium and titanium. The orientation control layer is made of a complex oxide having a perovskite structure including an A site containing lanthanum and a B site containing nickel and titanium.

LIQUID JETTING APPARATUS

A liquid jetting apparatus comprises a flow passage member which has a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber; a piezoelectric element with which the flow passage member is provided so that the piezoelectric element is overlapped with the pressure chamber; a protective member which is arranged on the flow passage member so that the piezoelectric element is covered therewith; and a supply member which is formed with a supply flow passage communicated with the liquid supply port of the flow passage member and which is adhered to extend over the flow passage member and the protective member; wherein a layer of a first adhesive to adhere the protective member and the supply member is thicker than a layer of a second adhesive to adhere the flow passage member and the supply member. 1. A liquid jetting apparatus comprising:a flow passage member having a pressure chamber communicated with a nozzle and a liquid supply port communicated with the pressure chamber:a piezoelectric element provided on the flow passage member to overlap with the pressure chamber;a protective member arranged on the flow passage member to cover the piezoelectric element; anda supply member formed with a supply flow passage communicated with the liquid supply port of the flow passage member, and adhered to the flow passage member and the protective member to extend over the flow passage member and the protective member,wherein a thickness of a layer of a first adhesive adhering the protective member and the supply member is different from a thickness of a layer of a second adhesive adhering the flow passage member and the supply member.2. The liquid jetting apparatus according to claim 1 , wherein the layer of the first adhesive is thicker than the layer of the second adhesive.3. The liquid jetting apparatus according to claim 2 , wherein a viscosity before curing of the first adhesive is greater than a viscosity before curing of ...

PRINTER CARTRIDGE WITH MULTIPLE FLUID CHAMBERS IN FLUID COMMUNICATION

In one example in accordance with the present disclosure a printer cartridge is described. The printer cartridge includes at least one backpressure chamber to provide backpressure to a fluid during deposition of the fluid onto a print medium. The printer cartridge also includes multiple fluid chambers in fluid communication with the at least one backpressure chamber. A fluid chamber provides fluid to a portion of a printhead. Adjacent fluid chambers are selectively in fluid communication with one another via valves. 1. A printer cartridge comprising:at least one backpressure chamber to provide backpressure to a fluid during deposition of the fluid onto a print medium; and a fluid chamber provides the fluid to a portion of a printhead;', 'adjacent fluid chambers are selectively in fluid communication with one another via at least one valve., 'multiple fluid chambers in fluid communication with the at least one backpressure chamber, wherein2. The printer cartridge of claim 1 , wherein the fluid is ink and the printer cartridge is an inkjet cartridge.3. The printer cartridge of claim 1 , comprising multiple backpressure chambers corresponding to the multiple fluid chambers.4. The printer cartridge of claim 3 , wherein:at least one of the multiple backpressure chambers and the multiple fluid chamber are arranged in an array; andthe array is the same width as the print medium on which the fluid is deposited.5. The printer cartridge of claim 1 , wherein the at least one valve is opened as a difference in pressure in the adjacent fluid chambers exceeds a breaking pressure for the at least one valve.6. The printer cartridge of claim 1 , wherein a breaking pressure for the at least one valve is such that the pressure in any of the multiple fluid chambers is greater than a head pressure.7. The printer cartridge of claim 1 , wherein a breaking pressure for the at least one valve is such that the pressure in any of the multiple fluid chambers is less than a bad print quality ...

LIQUID DISCHARGE HEAD, LIQUID DISCHARGE DEVICE, AND LIQUID DISCHARGE APPARATUS

A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a deformable damper, and a damper chamber. The plurality of nozzles is arrayed in a nozzle array direction, to discharge liquid. The plurality of individual liquid chambers is communicated with the plurality of nozzles. The common liquid chamber supplies liquid to the plurality of individual. liquid chambers. The deformable damper constitutes part of a wall face of the common liquid chamber. The damper chamber is disposed along the nozzle array direction with the damper interposed between the damper chamber and the common liquid chamber. The damper chamber extends to an outer area in the nozzle array direction than an individual liquid chamber of the plurality of individual liquid chambers at each end in the nozzle array direction. 17- (canceled)8. A liquid discharge head comprising:a plurality of nozzle rows each of which includes a plurality of nozzles configured to discharge liquid and arrayed in a nozzle array direction;a plurality of individual liquid chambers communicated with the respective nozzles of a corresponding nozzle row amongst the nozzle rows;a plurality of common liquid chambers corresponding to the respective nozzle rows, to supply, by each common liquid chamber, liquid to the corresponding plurality of individual liquid chambers;a plurality of dampers corresponding to the respective nozzle rows, each damper constituting a wall face of a corresponding common liquid chamber amongst the common liquid chambers and arranged longitudinally along the nozzle array direction; anda plurality of damper chambers corresponding to the respective nozzle rows, each damper chamber being disposed with a corresponding damper interposed between the damper chamber and a corresponding common liquid chamber,wherein each of the two damper chambers includes a plurality of columns to support the corresponding damper, andwherein the columns in a first ...

FLEXIBLE MEMBRANE MECHANISM, FLOW PATH MEMBER, LIQUID EJECTING APPARATUS, AND CONTROL METHOD OF FLEXIBLE MEMBRANE

There is provided a flexible membrane mechanism for a valve mechanism, the flexible membrane mechanism including: a lid member; a flexible membrane that forms a space between the lid member and the flexible membrane; and a fluid flow path that communicates with the space, in which the flexible membrane is configured to deform such that a valve of the valve mechanism is opened and closed, in which the flexible membrane includes a protrusion portion projecting and sinking toward the lid member, and in which the flexible membrane includes an easily-deformable region and a little-deformable region each outside a portion which is configured to be brought into contact with the valve mechanism. 1. A flexible membrane mechanism for a valve mechanism , the flexible membrane mechanism comprising:a lid member;a flexible membrane that forms a space between the lid member and the flexible membrane; anda fluid flow path that communicates with the space,wherein the flexible membrane is configured to deform such that a valve of the valve mechanism is opened and closed,the flexible membrane includes a protrusion portion projecting and sinking toward the lid member, andwherein the flexible membrane includes an easily-deformable region and a little-deformable region each outside a portion which is configured to be brought into contact with the valve mechanism.2. The flexible membrane mechanism according to claim 1 ,wherein the little-deformable region of the flexible membrane is thicker than the easily-deformable region of the flexible membrane.3. The flexible membrane mechanism according to claim 2 ,wherein a protrusion amount of the protrusion portion provided in the little-deformable region of the flexible membrane toward the lid member is smaller than that of the protrusion portion provided in the easily-deformable region of the flexible membrane toward the lid member.4. The flexible membrane mechanism according to claim 3 ,wherein the flexible membrane mechanism further includes ...

FLUID EJECTION DEVICES WITH REDUCED CROSSTALK

A fluid ejection apparatus includes a plurality of fluid ejectors. Each fluid ejector includes a pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber. The fluid ejection apparatus includes a feed channel fluidically connected to each pumping chamber; and at least one compliant structure formed in a surface of the feed channel. The at least one compliant structure has a lower compliance than the surface of the feed channel. 1. A fluid ejection apparatus comprising: a pumping chamber, and', 'an actuator configured to cause fluid to be ejected from the pumping chamber;, 'a plurality of fluid ejectors, each fluid ejector comprisinga feed channel fluidly connected to each pumping chamber; andat least one compliant structure formed in a surface of the feed channel, wherein the at least one compliant structure is more compliant than the surface of the feed channel, a recess formed below the surface of the feed channel; and', 'a membrane disposed between the recess and the feed channel., 'wherein the at least one compliant structure comprises2. The fluid ejection apparatus of claim 1 , wherein the membrane seals the recess.3. The fluid ejection apparatus of claim 1 , wherein the compliant structure is formed in one or more of a bottom wall or a top wall of the feed channel.4. The fluid ejection apparatus of claim 1 , wherein the compliant structure is formed in a side wall of the feed channel.5. The fluid ejection apparatus of claim 1 , wherein each fluid ejector includes a nozzle formed in a nozzle layer.6. The fluid ejection apparatus of claim 5 , wherein the recess is formed in the nozzle layer.7. The fluid ejection apparatus of claim 1 , wherein one or more of the nozzle layer is silicon and the membrane is silicon.8. The fluid ejection apparatus of claim 1 , wherein each fluid ejector includes an actuator and a nozzle claim 1 , and wherein actuation of one of the actuators causes fluid to be ejected from the corresponding ...

LIQUID SUPPLY UNIT AND LIQUID INJECTION DEVICE

A liquid supply unit includes a first chamber, a second chamber, an opening/closing member and a lever member. The first chamber communicates with a liquid storage container and is set to a first pressure. The second chamber communicates with a liquid injection head and is internally set to a second pressure decompressed from the first pressure. A posture of the opening/closing member is changed between a closing posture and an opening posture. A posture of the lever member is changed between a sealing posture for sealing an opening allowing communication between the second chamber and atmosphere and an opening posture for opening the opening. The lever member allows the opening/closing member to be set to the closing posture while being set in the sealing posture, and changes the posture of the opening/closing member from the closing posture to the opening posture while being set in the opening posture. 1. A liquid supply unit applied to a liquid injection device in which a liquid storage container for storing predetermined liquid is arranged in an upper part , a liquid injection head for injecting the liquid is arranged in a lower part , and the liquid is supplied from the liquid storage container to the liquid injection head , utilizing a water head difference , comprising:a first chamber communicating with the liquid storage container, a first pressure obtained by adding a pressure by the water head difference to an atmospheric pressure being set in the first chamber;a second chamber arranged downstream of the first chamber in a liquid supply direction and communicating with the liquid injection head, a second pressure decompressed from the first pressure being set in the second chamber;a first wall portion including a communication opening allowing communication between the first chamber and the second chamber;an opening/closing member arranged in the communication opening, a posture of the opening/closing member being changed between a closing posture for ...

LIQUID SUPPLY UNIT AND LIQUID INJECTION DEVICE

A liquid supply unit includes a first chamber, a second chamber, an opening/closing member, a biasing member, a pressing member and a flexible film member. The first chamber communicates with a liquid storage container, and the second chamber communicates with a liquid injection head. The opening/closing member changes a posture between a closing posture for closing a communication opening and an opening posture for opening it. The biasing member biases the opening/closing member in a direction toward the closing posture. The pressing member presses the opening/closing member in a direction toward the opening posture. The flexible film member is displaced based on a negative pressure generated in the second chamber. When a pressure receiving portion of the pressing member receives the displacement force from the flexible film member, the pressing member rotates about a pivot point and presses the opening/closing member against a biasing force of the biasing member. 1. A liquid supply unit for injecting predetermined liquid from a liquid storage container storing the liquid to a liquid injection head for injecting the liquid , comprising:a first chamber communicating with the liquid storage container;a second chamber arranged downstream of the first chamber in a liquid supply direction and communicating with the liquid injection head;a wall portion including a communication opening allowing communication between the first chamber and the second chamber;an opening/closing member arranged in the communication opening, a posture of the opening/closing member being changed between a closing posture for closing the communication opening and an opening posture for opening the communication opening;a biasing member configured to bias the opening/closing member in a direction toward the closing posture;a pressing member capable of pressing the opening/closing member in a direction toward the opening posture; anda flexible film member configured to be displaced based on a ...

Ink absorber, ink absorbing member accommodation container, and ink absorbing structure

An ink absorber includes: an ink absorbing member that is capable of absorbing ink; an accommodation section that accommodates the ink absorbing member; and a detachment structure section that detaches the ink absorbing member from the accommodation section. In the ink absorber, it is preferable that the accommodation section have a bottom section and side wall sections standing up from the bottom section, that inclined surfaces inclined relative to the bottom section be formed inside the side wall sections, and that the detachment structure section be configured with the inclined surfaces.

Bubbler

A bubbler may be provided between nozzles. The bubbler may be provided opposite a standpipe.

LIQUID DISCHARGE APPARATUS

A liquid discharge apparatus includes a plurality of liquid discharge heads to discharge liquid, and a plurality of head tanks communicating with the plurality of liquid discharge heads, respectively. Each of the plurality of head tanks includes a liquid chamber to store the liquid and a gas chamber separated from the liquid chamber by a diaphragm, and the gas chamber of one of the plurality of head tanks communicates with the gas chamber of another of the plurality of head tanks. 1. A liquid discharge apparatus comprising:a plurality of liquid discharge heads to discharge liquid; anda plurality of head tanks communicating with the plurality of liquid discharge heads, respectively,each of the plurality of head tanks including a liquid chamber to store the liquid and a gas chamber separated from the liquid chamber by a diaphragm, andthe gas chamber of one of the plurality of head tanks communicating with the gas chamber of another of the plurality of head tanks.2. The liquid discharge apparatus according to claim 1 , further comprising a liquid channel through which the liquid is circulated via the plurality of liquid discharge heads claim 1 ,wherein each of the plurality of liquid discharge heads includes a supply port and a discharge port, a plurality of first head tanks connected to the discharge port of the plurality of liquid discharge heads, respectively; and', 'a plurality of second head tanks connected to the discharge port of the plurality of liquid discharge heads, respectively,, 'wherein the plurality of head tanks includeswherein the gas chamber of one of the plurality of first head tanks communicates with the gas chamber of another of the plurality of first head tanks.3. The liquid discharge apparatus according to claim 2 , wherein the gas chamber of one of the plurality of second head tanks communicates with the gas chamber of another of the plurality of second head tanks.4. The liquid discharge apparatus according to claim 1 , further comprising a ...

FLUID EJECTION DEVICES WITH REDUCED CROSSTALK

A fluid ejection apparatus includes a fluid ejector comprising a pumping chamber, an ejection nozzle coupled to the pumping chamber, and an actuator configured to cause fluid to be ejected from the pumping chamber through the ejection nozzle. The fluid ejection apparatus includes a first compliant assembly formed in a surface of an inlet feed channel, the inlet feed channel fluidically connected to a fluid inlet of the pumping chamber; and a second compliant assembly formed in a surface of an outlet feed channel, the outlet feed channel fluidically connected to a fluid outlet of the pumping chamber. A compliance of the first compliant assembly is different from a compliance of the second compliant assembly. 1. A fluid ejection apparatus comprising: a pumping chamber,', 'an ejection nozzle coupled to the pumping chamber, and', 'an actuator configured to cause fluid to be ejected from the pumping chamber through the ejection nozzle;, 'a fluid ejector comprisinga first compliant assembly formed in a surface of an inlet feed channel, the inlet feed channel fluidically connected to a fluid inlet of the pumping chamber; anda second compliant assembly formed in a surface of an outlet feed channel, the outlet feed channel fluidically connected to a fluid outlet of the pumping chamber,wherein a compliance of the first compliant assembly is different from a compliance of the second compliant assembly.2. The fluid ejection apparatus of claim 1 , in which the compliance of the first compliant assembly is less than the compliance of the second compliant assembly.3. The fluid ejection apparatus of claim 1 , in which a compliance of the ejection nozzle is greater than the compliance of the first compliant assembly and the compliance of the second compliant assembly.4. The fluid ejection apparatus of claim 1 , in which a bubble pressure of the first compliant assembly is greater than a bubble pressure of the ejection nozzle.5. The fluid ejection apparatus of claim 1 , in which a ...

Liquid ejection device

A liquid ejection device is disclosed. One device includes a liquid supply member defining a liquid supply channel that is in communication with a common liquid chamber via an outlet of the liquid supply channel. The outlet and the common liquid chamber extend along a longitudinal direction respectively. The liquid supply member includes a plurality of ribs located within the liquid supply channel, the plurality of ribs are disposed side by side in the longitudinal direction. The plurality of ribs includes a first rib, a second rib and a third rib. A distance from the first rib to the third rib in the longitudinal direction is smaller than a distance from the first rib to the second rib in the longitudinal direction.

LIQUID DISCHARGE HEAD

There is provided a liquid discharge head, including: a piezoelectric body having a plurality of piezoelectric layers stacked on top of each other in a stacking direction; individual electrodes; and a first common electrode. Each of the individual electrodes has a first portion and a second portion arranged in the first direction at an interval, and a third portion coupling the first portion with the second portion. The first common electrode includes a first extending portion as well as first protrusions and second protrusions protruding from the first extending portion. Portions of the first extending portion overlapping in the stacking direction with the third portions are formed having through holes passing through the first common electrode in the stacking direction. 1. A liquid discharge head , comprising:a piezoelectric body including a plurality of piezoelectric layers stacked in a stacking direction, the piezoelectric body having a first end and a second end which are away from each other in a first direction orthogonal to the stacking direction of the piezoelectric layers;a plurality of individual electrodes located on a first surface that is orthogonal to the stacking direction; anda first common electrode located on a second surface that is orthogonal to the stacking direction, the first common electrode being different in a position in the stacking direction from the first surface,wherein each of the individual electrodes includes a first portion and a second portion arranged in the first direction at an interval, and a third portion connecting the first portion and the second portion, the first portion being positioned between the first end and the third portion in the first direction, the third portion being positioned between the first portion and the second portion in the first direction, the second portion being positioned between the third portion and the second end in the first direction,wherein the first portions, the second portions, and the ...

LIQUID EJECTING HEAD INCLUDING SUBSTRATE AND RIGID LAYER HAVING CONVEX PARTS AND CONCAVE PARTS

A liquid ejecting head includes: a substrate; a first electrode; a piezoelectric layer covering the first electrode; a second electrode positioned on the piezoelectric layer; a plurality of pressure chambers arrayed in a first direction; and a rigid layer. Each pressure chamber has one end portion and another end portion in a second direction. The rigid layer has an edge providing a plurality of convex parts and a plurality of concave parts. Each convex part and each concave part are alternately arrayed with each other in the first direction. Each convex part is positioned outside each pressure chamber and protrudes in the second direction toward the another end portion. Each concave part is positioned at each pressure chamber and is concaved in the second direction away from the another end portion. 1. A liquid ejecting head comprising:a substrate having a first surface and a second surface opposite to the first surface, the substrate extending in a first direction parallel to the first surface and a second direction parallel to the first surface and intersecting the first direction;a first electrode provided on the first surface of the substrate;a piezoelectric layer provided on the first surface of the substrate to cover the first electrode;a second electrode positioned on the piezoelectric layer;a plurality of pressure chambers formed on the second surface of the substrate and arrayed in the first direction, each of the plurality of pressure chambers having one end portion and another end portion in the second direction; anda rigid layer provided on the second electrode and extending in the first direction so as to be overlapped with the one end portion of each of the plurality of pressure chambers, the rigid layer having a nonlinear shaped edge providing a plurality of convex parts and a plurality of concave parts, each of the plurality of convex parts and each of the plurality of concave parts being alternately arrayed with each other in the first direction, ...

Liquid absorber

A liquid absorber including a liquid absorbent body configured to include a small piece aggregate including a plurality of small pieces having a fiber base material containing a fiber and a water absorbent resin, and a container that includes a wall portion defining a storage space accommodating the liquid absorbent body, and a protrusion portion provided to protrude from the wall portion toward the storage space, in which when a minimum separation distance between a tip end of the protrusion portion and a structure different from the protrusion portion is L1, and an average value of a distance between farthest ends of the small piece is L2, 0<L1/L2≤1.80 is satisfied.

Method for reducing cavitation in impulse ink jet printing device

Methods for reducing cavitation in impulse or drop on demand ink jetting devices are provided. Impulse ink jet compositions comprising antioxidant are also provided which are suitable for printing clear, well-defined alphanumeric text or low spread, narrow bar width bar codes on porous substrates such as Kraft paper or corrugated cardboard. The ink compositions preferably comprise from about 20 to 50 percent by weight of a carbon black dispersion, from about 10 to 20 percent by weight of a dispersion medium, from about 40 to 60 percent by weight of a plasticizer and less than 2% of an antioxidant additive. The antioxidant additive lowers the dissolve oxygen level in the ink, thereby enhancing the jetting perfomance of the printhead.

Piezo-electric type inkjet prihthead having one-way shutter

압전 방식의 잉크젯 프린트헤드가 개시된다. 개시된 잉크젯 프린트헤드는, 토출될 잉크가 채워지는 다수의 압력 챔버와, 다수의 압력 챔버 각각에 잉크의 토출을 위한 구동력을 제공하는 압전 액츄에이터와, 다수의 압력 챔버 각각에 공급될 잉크를 담고 있는 매니폴드와, 매니폴드로부터 다수의 압력 챔버에 잉크를 공급하기 위한 다수의 리스트릭터와, 다수의 압력 챔버로부터 잉크를 토출하기 위한 다수의 노즐과, 다수의 리스트릭터 각각의 출구에 설치되는 다수의 일방향 셔터를 구비한다. 상기 일방향 셔터는 리스트릭터로부터 압력 챔버로 잉크가 공급될 때에는 리스트릭터를 개방시키고, 압력 챔버로부터 노즐을 통해 잉크가 토출될 때에는 리스트릭터를 막아 잉크의 역류를 차단한다. 이와 같은 본 발명에 의하면, 일방향 셔터에 의해 잉크의 역류가 차단되므로, 일정한 부피의 잉크 액적을 토출하는데 필요한 진동판의 면적과 압력 챔버의 크기를 줄일 수 있어서 압전 방식의 잉크젯 프린트헤드의 CPI를 증가시킬 수 있게 된다. A piezoelectric inkjet printhead is disclosed. The disclosed inkjet printhead includes a plurality of pressure chambers filled with ink to be discharged, a piezoelectric actuator providing driving force for ejecting ink to each of the plurality of pressure chambers, and a manifold containing ink to be supplied to each of the plurality of pressure chambers. Folds, a plurality of restrictors for supplying ink to the plurality of pressure chambers from the manifolds, a plurality of nozzles for ejecting ink from the plurality of pressure chambers, and a plurality of one directions provided at the outlets of the plurality of restrictors, respectively A shutter is provided. The one-way shutter opens the restrictor when ink is supplied from the restrictor to the pressure chamber, and blocks the restrictor when the ink is ejected from the pressure chamber through the nozzle to block backflow of the ink. According to the present invention, since the back flow of the ink is blocked by the one-way shutter, the area of the diaphragm and the size of the pressure chamber required to discharge a certain volume of ink droplets can be reduced, thereby increasing the CPI of the piezoelectric inkjet printhead. It becomes possible.

Method for manufacturing liquid jet head

インクジエツトヘツド

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Ink-jet recording apparatus

液体噴射記録装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Ink jet head

Piezoelectric inkjet printhead

A piezoelectric inkjet print head is provided to arrange a plurality of pressure chambers at an intermediate portion of a chamber array and dummy chambers at both edges of the chamber array for the uniform crosstalk. A piezoelectric inkjet print head(300) includes a chamber array having a manifold, a plurality of restricters, and a plurality of chambers(361,362) filled with ink supplied from the manifold, a passage forming plate(310) having an ink passage with a plurality of nozzles(371,372) respectively connected to the chambers, a vibration plate formed on the passage forming plate to cover the chambers, a plurality of piezoelectric actuators(380) formed on the vibration plate, and a plurality of trenches(390) formed on the vibration plate to be respectively positioned between the piezoelectric actuators. The vibration plate has an ink inlet communicated with the manifold. Each of the piezoelectric actuators includes a lower electrode(381), a piezoelectric layer(382), and an upper electrode(383).

液体喷出头以及使用该液体喷出头的记录装置

本发明提供一种液体喷出头以及使用该液体喷出头的记录装置，液体喷出方向与相对于喷出孔面正交的方向的偏差较小。本发明的液体喷出头(2)具备喷出孔(8)、喷出孔(8)开口的喷出孔面(4‑1)、加压室(10)、以及连结喷出孔(8)与加压室(10)的流路(13)，流路(13)包括喷嘴部(13a)以及部分流路(13b)，对于部分流路(13b)，在设平均直径为W[μm]，喷嘴部(13a)侧的面积重心为C1，自喷嘴部(13a)侧起2W[μm]的位置处的面积重心为C2，加压室(10)侧的面积重心为C3，连结C1与C3的直线与自喷嘴部(13a)侧起2W[μm]的位置处的与所述喷出孔面平行的平面的交点为Cm时，Cm与C1的平面方向的距离(Dm)大于0.1W[μm]，并且C2与C1的平面方向的距离(D2)在0.1W[μm]以下。

Restrictor with structure for preventing back flow and inkjet head having the same

역류를 억제하기 위한 구조를 가진 리스트릭터와 이를 구비한 잉크젯 헤드가 개시된다. 개시된 잉크젯 헤드에 있어서, 잉크 인렛과, 다수의 압력 챔버와, 매니폴드와, 다수의 압력 챔버 각각과 매니폴드를 연결하는 다수의 리스트릭터와, 다수의 노즐을 포함하는 잉크 유로가 유로 형성판에 형성되고, 압전 액츄에이터는 유로 형성판 상에 마련된다. 상기 다수의 리스트릭터 각각의 내부에는 압력 챔버로부터 매니폴드 쪽으로 향하는 잉크의 유동 저항을 높이는 형상을 가진 다수의 돌기가 형성된다. 상기 다수의 돌기 각각은, 매니폴드로부터 압력 챔버 쪽으로 향하는 방향과 마주보는 제1면과, 압력 챔버로부터 매니폴드 쪽으로 향하는 방향과 마주보는 제2면을 가지며, 제1면은 잉크의 유동 저항을 낮출 수 있도록 형성되고, 제2면은 잉크의 유동 저항을 높일 수 있도록 형성된다. 이와 같은 구성에 의하면, 잉크 토출 과정에서는 리스트릭터를 통한 잉크의 역류가 억제되고, 잉크 리필 과정에서는 리스트릭터를 통해 충분한 양의 잉크가 신속하게 리필될 수 있다. Disclosed are a restrictor having a structure for suppressing backflow and an inkjet head having the same. In the disclosed inkjet head, an ink flow path including an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors connecting each of the plurality of pressure chambers and a manifold, and a plurality of nozzles is provided on the flow path forming plate. And a piezoelectric actuator is provided on the flow path forming plate. Inside each of the plurality of restrictors are formed a plurality of protrusions having a shape that increases the flow resistance of the ink from the pressure chamber toward the manifold. Each of the plurality of protrusions has a first face facing the direction from the manifold toward the pressure chamber and a second face facing the direction from the pressure chamber toward the manifold, the first face lowering the flow resistance of the ink. The second surface is formed to increase the flow resistance of the ink. According to such a configuration, the back flow of ink through the restrictor is suppressed in the ink ejecting process, and a sufficient amount of ink can be quickly refilled through the restrictor in the ink refilling process.

Manufacturing method for microstructure, manufacturing method for liquid ejecting head, and liquid ejecting head

一种用于制造微细结构的方法，包括：形成要由第一波长范围的致电离辐射曝光的第一致电离辐射分解型正性抗蚀剂层的步骤；在第一正性光敏材料层上形成要由第二波长范围的致电离辐射曝光的第二致电离辐射分解型正性抗蚀剂层的步骤；通过在作为上层的上述第二正性光敏材料层中进行分解反应而不在上述第一正性光敏材料层中进行分解反应，并用显影液进行显影，从而在所述第二正性光敏材料层中形成所需的图案的步骤；以及，通过在预定区域中进行分解反应并进行显影，在作为下层的所述第一正性光敏材料层中形成所需的图案的步骤。从而，在所述衬底中制造出凸形图案。

Dual feed liquid drop ejector

A liquid ejector includes a structure defining a chamber. The chamber includes a first surface and a second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. A first liquid feed channel and a second liquid feed channel are in fluid communication with the chamber. A first segment of a segmented liquid inlet is in fluid communication with the first liquid feed channel and a second segment of the segmented liquid inlet is in fluid communication with the second liquid feed channel.

Fluid ejection device

流体喷射装置包括：腔室；至少一个流体供应通道；和超过两个的流体入口，它们被设置在所述流体通道和所述腔室之间。喷墨打印系统包括：流体喷射装置，其具有沿所述流体喷射装置内的流体供应通道设置的腔室，其中，第一通道沿所述腔室的第一侧设置，第二通道沿所述腔室的第二侧设置。所述腔室包括多个流体入口，其中，第一多个流体入口被设置在所述腔室和所述第一通道之间，第二多个流体入口被设置在所述腔室和所述第二通道之间。

Liquid drop ejection using dual feed ejector

A liquid ejector includes a structure defining a plurality of chambers with one of the chambers including a first and second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. First and second liquid feed channels are in fluid communication with the chamber. First and second segments of a segmented liquid inlet are in fluid communication with the first and second liquid feed channels, respectively. The first and second segments of the segmented liquid inlet are also in fluid communication with another one of the plurality of chambers. Liquid is provided to the chamber through the first and second liquid feed channels from the segmented liquid inlet. A drop of the liquid is ejected through the nozzle orifice of the chamber by operating the drop forming mechanism.

Dual feed liquid drop ejector

A liquid ejector includes a structure defining a chamber. The chamber includes a first surface and a second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. A first liquid feed channel and a second liquid feed channel are in fluid communication with the chamber. A first segment of a segmented liquid inlet is in fluid communication with the first liquid feed channel and a second segment of the segmented liquid inlet is in fluid communication with the second liquid feed channel.

Dual feed liquid drop ejector

A liquid ejector includes a structure defining a chamber. The chamber includes a first surface and a second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. A first liquid feed channel and a second liquid feed channel are in fluid communication with the chamber. A first segment of a segmented liquid inlet is in fluid communication with the first liquid feed channel and a second segment of the segmented liquid inlet is in fluid communication with the second liquid feed channel.

Liquid drop ejection using dual feed ejector

A liquid ejector is provided that includes a structure defining a plurality of chambers with one of the plurality of chambers including a first surface and a second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. A first liquid feed channel and a second liquid feed channel are in fluid communication with the chamber. A first segment of a segmented liquid inlet is in fluid communication with the first liquid feed channel and a second segment of the segmented liquid inlet is in fluid communication with the second liquid feed channel. The first segment of the segmented liquid inlet is also in fluid communication with another one of the plurality of chambers and the second segment of the liquid inlet is also in fluid communication with another one of the plurality of chambers. A liquid is provided to the chamber through the first liquid feed channel and the second liquid feed channel from the segmented liquid inlet. A drop of the liquid is ejected through the nozzle orifice of the chamber by operating the associated drop forming mechanism.

Ultrasonic wave absorbing apparatus of ink jet printing head

Fluid ejection head and use the recording equipment of this fluid ejection head

本发明的目的在于提供液体喷出方向与相对于喷出孔面正交的方向的偏差较小的液体喷出头以及使用该液体喷出头的记录装置。本发明的液体喷出头(2)具备喷出孔(8)、喷出孔(8)开口的喷出孔面(4‑1)、加压室(10)、以及连结喷出孔(8)与加压室(10)的流路(13)，流路(13)包括喷嘴部(13a)以及部分流路(13b)，对于部分流路(13b)，在设平均直径为W[μm]，喷嘴部(13a)侧的面积重心为C1，白喷嘴部(13a)侧起2W[μm]的位置处的面积重心为C2，加压室(10)侧的面积重心为C3，连结C1与C3的直线与白喷嘴部(13a)侧起2W[μm]的位置处的与所述喷出孔面平行的平面的交点为Cm时，Cm与C1的平面方向的距离(Dm)大于0.1W[μm]，并且C2与C1的平面方向的距离(D2)在0.1W[μm]以下。

Ink jet head

Liquid ejecting head, liquid ejecting apparatus, and method for manufacturing liquid ejecting head

本发明提供液体喷射头、液体喷射装置及液体喷射头的制造方法，能够可靠地吸收贮存器内产生的压力。具有多个液体喷射用的喷嘴口的液体喷射头具备：由被轧制的金属构成且形成有向多个所述喷嘴口连通的贮存器的液体贮存器板；由被轧制的金属构成且与所述金属器板相接而层叠，并且在对应于所述液体贮存器的位置形成有吸收所述液体贮存器的压力的柔性部的柔性板，其中，所述柔性板沿与所述柔性部的长度方向大致平行的方向轧制，所述贮存器板沿与所述柔性板的轧制方向大致垂直的方向轧制。

Ink jet recording head

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Liquid ejecting unit and method

一种喷射液体的方法和装置，其用于喷墨的喷射部件的加工精度容易提高，并且甚至当灰尘与油墨混合时，墨滴容积和喷射角度等的变化可以减小。另外，可以防止油墨供给喷墨部件的油墨供给速度降低。喷墨装置包括多个设置在基础件(11)上的加热元件(13)，利用加热元件(13)产生的能量给油墨加压的墨盒，和具有喷射在墨盒中加压的油墨的喷射孔的喷嘴(17)。每一个喷嘴(17)放置在每一个加热元件(13)的上面。另外，面向加热元件(13)的喷嘴(17)的第一个开放侧作为油墨入口(17b)，喷嘴(17)的第二个开放侧作为喷射孔(17a)，使喷嘴(17)的内部空间作为墨盒，不单独设置墨盒。

Patent JPH0223350B2

Printhead including acoustic dampening structure

A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber.

Printhead including acoustic dampening structure

A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers.

Printhead with print artifact supressing cavity

A printhead includes a nozzle plate including a plurality of nozzles and a manifold body bonded to the nozzle plate. The manifold body includes a liquid channel in fluid communication with the plurality of nozzles. A cavity that dampens pressure modulation in liquid channel of the manifold body is located between the nozzle plate and the manifold body. The cavity is fluidically common to the plurality of nozzles.

Inkjet head having plurality of restrictors for restraining crosstalk

크로스 토크를 억제하기 위한 복수의 리스트릭터를 가진 잉크젯 헤드가 개시된다. 개시된 잉크젯 헤드는 잉크 유로가 형성된 유로 형성판과, 유로 형성판 상에 마련된 액츄에이터와, 유로 형성판 위에 결합되며, 매니폴드를 가진 잉크 공급 베젤을 구비한다. 상기 잉크 유로는, 매니폴드로부터 잉크가 유입되는 잉크 인렛과, 유입된 잉크가 저장되는 다수의 리저버와, 다수의 리저버 각각으로부터 공급된 잉크가 채워지는 다수의 챔버와, 잉크를 토출하기 위한 다수의 노즐과, 다수의 리저버 각각과 다수의 챔버 각각을 연결하는 다수의 제1 리스트릭터와, 다수의 리저버 각각과 잉크 인렛을 연결하는 다수의 제2 리스트릭터를 포함한다. 그리고, 상기 다수의 리저버 각각은 그 중간부에 형성된 분리벽에 의해 서로 분리된 제1 리저버와 제2 리저버를 포함할 수 있으며, 분리벽에는 제1 리저버와 제2 리저버를 연결하는 제3 리스트릭터가 형성될 수 있다. 이와 같은 구성에 의하면, 잉크의 토출 과정에서 잉크의 역류와 압력파의 전파로 인한 인접한 노즐들 사이의 크로스 토크를 억제할 수 있다.

Liquid ejection device and liquid ejection device unit

Dual feed liquid drop ejector

액체 토출기는 챔버를 규정하는 구조물을 구비한다. 상기 챔버는 제 1 표면 및 제 2 표면을 구비한다. 상기 제 1 표면은 노즐 오리피스를 구비한다. 상기 챔버의 제 2 표면에는 노즐 오리피스와 대향하여 방울 형성 기구가 설치된다. 제 1 액체 송급 채널 및 제 2 액체 송급 채널이 상기 챔버와 유체 연통된다. 분할된 액체 유입구의 제 1 세그먼트가 상기 제 1 액체 송급 채널과 유체 연통되고, 분할된 액체 유입구의 제 2 세그먼트가 상기 제 2 액체 송급 채널과 유체 연통된다. 챔버, 액체 유입구, 세그먼트, 노즐 오리피스, 저항 가열 요소, 방울 형성 기구, 액체 송급 채널, 오프셋, 포스트, 전원 회로, 논리 회로

Piezoelectric inkjet head and method of manufacturing the same

압전 방식 잉크젯 헤드와 그 제조 방법이 개시된다. 개시된 잉크젯 헤드는 서로 접합되는 세 개의 단결정 실리콘 기판을 구비한다. 상부 기판에는 잉크 인렛과, 다수의 압력 챔버와, 압전 액츄에이터가 형성되고, 중간 기판에는 매니폴드와, 다수의 리스트릭터와, 다수의 제1 댐퍼가 형성되며, 하부 기판에는 다수의 노즐이 형성된다. 그리고, 중간 기판에는, 매니폴드의 하부에 위치하여 매니폴드 내부의 압력 변화를 완화시키는 것으로, 중간 기판과는 다른 물질로 이루어진 멤브레인이 마련된다. 중간 기판 또는 하부 기판에는, 멤브레인의 하부에 위치하는 캐비티와, 캐비티를 외부와 연통시키는 적어도 하나의 벤팅 채널이 형성된다. 이와 같은 구성에 의하면, 매니폴드의 하부에 형성되며 유연성을 가진 멤브레인이 잉크의 역류로 인한 매니폴드 내부의 급격한 압력 변화를 완화시키게 되고, 이에 따라 잉크 토출 시 인접한 압력 챔버들 상호간의 크로스 토크를 효과적으로 방지할 수 있게 된다. A piezoelectric inkjet head and a manufacturing method thereof are disclosed. The disclosed inkjet head has three single crystal silicon substrates bonded to each other. An ink inlet, a plurality of pressure chambers and a piezoelectric actuator are formed in the upper substrate, a manifold, a plurality of restrictors, and a plurality of first dampers are formed in the intermediate substrate, and a plurality of nozzles are formed in the lower substrate. . The intermediate substrate is provided with a membrane made of a material different from that of the intermediate substrate, which is located below the manifold to mitigate the pressure change inside the manifold. In the intermediate substrate or the lower substrate, a cavity located under the membrane and at least one venting channel for communicating the cavity with the outside are formed. According to such a configuration, a flexible membrane formed at the bottom of the manifold mitigates the sudden pressure change inside the manifold due to the back flow of ink, thereby effectively crosstalk between adjacent pressure chambers during ink ejection. It can be prevented.