CALIBRATION OF AN MICRO-ELECTROMECHANICAL DEVICE

LUFTZUFUHRANORDUNG FOR A PRINTER

INK RADIATION PRINT HEAD MANUFACTURING PROCESS

MOVEMENT SENSOR IN AN MICRO-ELECTROMECHANICAL ELEMENT

A Print Engine for an Inkjet Printer

Cartridge unit having negatively pressurized ink storage

Micromechanical fluid supply system (fluid08)

Data distribution in monolithic lift print heads

INKJET COLLIMATOR

A printhead for an ink jet printer that has a collimator [84] associated with each of the ink nozzles [22] to retain any misdirected ink droplets [150] ejected from damaged nozzles [22]. The collimators [84] are formed in a nozzle guard [80] covering the exterior or the nozzle array. Each collimator [84] is an aperture in the form of an elongate passage where lengthwise dimension far exceeds the bore of the passage.

MOVEMENT SENSOR IN A MICRO ELECTRO-MECHANICAL DEVICE

A micro electro-mechanical device embodied within an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle (27) when heat inducing electric current is passed through the actuating arm. The device incorporates a movement sensor (37, 39) that comprises a moving contact element (37) that is formed integrally with the actuating arm, a fixed contact element (39) that is formed integrally with a support structure of the device and electrical elements formed within the support structure for detecting contact that is made between the fixed contact element (39) and the moving contact element (37). The movement sensor (37, 39) is provided for the purpose of facilitating testing of the device under various operating conditions.

PRINTHEAD EMPLOYING DATA PACKETS INCLUDING ADDRESS DATA

A printhead including an address line for communicating a set of addresses and a number of primitives, each primitive including a plurality of controllable activation devices coupled to the address line, each switch corresponding to at least one address of the set of addresses, each address corresponding to one of a number of primitive functions. A buffer receives a series of data packets, each data packet including address bits representative of one address of the set of addresses. Address logic receives the address bits from the buffer, wherein for each data packet the address logic encodes the address represented by the address bits onto the address line, and wherein the at least one switch corresponding to the address activates the primitive function corresponding to address.

HIGH SPEED DIGITAL PRINTER UNIT

An printer unit is provided comprising a body having a media input assembly for supporting media for printing (34), a media output assembly for collecting printed media and a print engine (70) adapted to be mounted to said body and having a printhead for printing an image on a surface of the media. The printhead being a pagewidth printhead that is removable from the print engine. © KIPO & WIPO 2008 ...

Printer with motor driven maintenance station

An inkjet printer comprising: a printhead with an array of nozzles; a maintenance assembly for moving between a capped position where the assembly covers the array of nozzles, and an uncapped position spaced from the array of nozzles; and, a motorized drive for moving the maintenance assembly between the capped position and the uncapped position; wherein the maintenance assembly has a capper for covering the array and a cleaner for wiping the array, such that the motorized drive uses a cam shaft arrangement for moving the cleaner relative to the capper.

Inkjet printer with replaceable printhead requiring zero-insertion-force

An inkjet printer comprising: a replaceable pagewidth printhead with an array of nozzles and printhead contacts for transmitting power and print data to the nozzles; and, corresponding contacts for supplying the power and print data to the printhead contacts; and, a selective biasing mechanism; such that, the printhead contacts and the corresponding contacts are biased into engagement during printing and released from biased engagement when installing or removing the printhead.

MST device for attachment to an adhesive surface

A MST device for attachment to an adhesive surface, the MST device comprising: an attachment surface for abutting the adhesive surface; a first fluid conduit connected to a first aperture in the attachment surface; and, a recess in the attachment surface adjacent the first aperture to hold adhesive displaced from between the attachment surface and the adhesive surface when the MST device is attached such that displaced adhesive does not block fluid flow in the first conduit. By profiling the attachment surface so there is a recess next to the first aperture, there is less risk that adhesive will be squeezed into the conduit and impair fluid flow.

Method of fabricating inkjet nozzle

A method of fabricating an inkjet nozzle on a wafer substrate is provided. The nozzle comprises a nozzle chamber, an actuator and control circuitry for controlling the actuator. The method comprises the steps of: (a) providing a wafer substrate having control circuitry formed thereon; (b) depositing first sacrificial material on the wafer; (c) forming the actuator on the first sacrificial layer such that the actuator electrically connects with the control circuitry; (d) depositing second sacrificial material over the actuator; (e) defining openings in the second sacrificial material, the openings defining the positions of chamber sidewalls; (f) depositing roof material over the second sacrificial material and into the openings; (g) defining an aperture in the roof material; and (h) removing the first and second sacrificial materials.

Pagewidth inkjet printhead assembly with an integrated printhead circuit

An inkjet printhead assembly includes an elongate chassis that spans a printing zone. An ink supply arrangement is mounted on the chassis and has an ink distribution assembly and a housing enclosing the ink distribution assembly. At least one elongate integrated printhead circuit is mounted on the ink distribution assembly to receive ink from the ink distribution assembly and to span the printing zone. Power and ground busbars are arranged on the housing. A tape automated bond strip interconnects the busbars and the, or each, integrated printhead circuit.

Ink cartridge unit for an inkjet printer with an ink refill facility

Provided is an ink cartridge unit for an inkjet printer. The cartridge unit includes a main body defining a number of ink reservoirs, each reservoir having a layered stack of absorbent material forming a micro-capillary array for suspending ink inside said reservoir. The unit also includes a lid assembly covering the main body to seal ink inside the ink reservoirs, and a printhead assembly operatively fed with ink from the ink reservoirs in the main body. The unit further includes a capper assembly for operatively capping the printhead assembly to prevent damage to micro-electromechanical nozzle arrangements defined on a printing surface of the printhead assembly. The lid assembly includes a refill facility whereby the ink reservoirs are refillable with ink from a suitable ink refill unit.

Inkjet printhead assembly with an ink storage and distribution assembly

A printhead assembly includes an ink storage and distribution assembly connectable to an ink supply. An elongate printhead integrated circuit is mounted on the ink storage and distribution assembly to receive ink therefrom. A housing is positioned on the ink storage and distribution assembly. A pair of busbars is mounted on the housing. A tape automated bonding strip is connected between each busbar and the printhead integrated circuit to provide power and control signals to the printhead integrated circuit.

CONTROLLING WAVEFORMS TO REDUCE CROSS-TALK BETWEEN INKJET NOZZLES

An inkjet printhead includes two groups of interleaved nozzles. First and second sets of drop-formation waveforms are associated with the groups of nozzles to selectively cause portions of a liquid jet to break off into drops. A timing delay device time-shifts the second-group waveforms relative to those associated with the first-group waveforms. A charging-electrode waveform having portions with first and second potentials is provided to a charging electrode. The waveform energies of the second-group waveforms is larger than the waveform energies of the corresponding first-group waveforms so that printing drops break off from the liquid jets while the charging-electrode is at the first potential, and non-printing drops break off from the liquid jets while the charging-electrode is at the second potential. 1. A method of printing , comprising:providing a liquid chamber having a plurality of nozzles disposed along a nozzle array direction, the plurality of nozzles including a first group of nozzles and a second group of nozzles, the nozzles of the first group being interleaved with the nozzles of the second group;providing liquid under pressure in the liquid chamber, the pressure being sufficient to eject liquid jets through the plurality of nozzles;providing a drop-formation device associated with each of the plurality of nozzles; one or more printing-drop drop-formation waveforms having a waveform period, which, when supplied to a drop-formation device associated with a particular nozzle, modulate the liquid jet ejected from the particular nozzle to selectively cause portions of the liquid jet to break off into a pair of drops traveling along a path, the pair of drops including a small printing drop and a small non-printing drop; and', 'one or more non-printing-drop drop-formation waveforms, which, when supplied to a drop-formation device associated with a particular nozzle, modulate the liquid jet ejected from the particular nozzle to selectively cause a portion ...

Ink supply system for a printhead

An ink supply system, suitable for supplying ink to a printhead contained in a portable electronic device, is provided. The ink supply system comprises: (a) at least one ink reservoir; (b) a corresponding ink chamber for each ink reservoir, each ink chamber being in fluid communication with its respective reservoir, wherein each ink chamber comprises a plurality of baffles for minimizing ink flow fluctuations in the ink supply system; and (c) an ink manifold in fluid communication with each ink chamber, the ink manifold comprising a plurality of ink channels configured to distribute ink from each ink chamber to a plurality of ink inlets in a printhead.

Ink refill unit with sequential valve actuators

A refill unit for refilling an ink storage compartment with an interface for releasably engaging with the refill unit, the interface having valves for controlling ink flows into, and out of, the storage compartment, the refill unit comprising: a body containing a quantity of ink; an ink outlet; and, valve actuators for actuating the valves when the refill unit engages the interface; such that, the valve actuators actuate the valves in a predetermined sequence.

APPARATUS FOR TESTING INTEGRATED CIRCUITRY

INKJET PRINTHEAD HAVING THERMAL BEND ACTUATOR HEATING ELEMENT ELECTRICALLY ISOLATED FROM NOZZLE CHAMBER INK

An ink jet printhead includes a number of nozzle devices formed on a substrate. Each nozzle device has a nozzle chamber, a nozzle opening through which ink from the nozzle chamber is ejected, a movable element in contact with ink in the nozzle chamber to cause the ejection of ink and thermal bend actuator. The thermal bend actuator has a proximal end anchored to the substrate and a distal end connected to the movable element. The actuator includes a first portion adjacent the proximal end and having a conducting heating circuit layer for heating the actuator. A second end portion of the actuator extends to the movable element and is in contact with ink in the chamber. A dielectric slot electrically isolates the first and second portions so that electric energy in the heating circuit layer is not conducted by the actuator to the ink in the chamber.

ПЕЧАТАЮЩАЯ ГОЛОВКА, ИСПОЛЬЗУЮЩАЯ ПАКЕТЫ ДАННЫХ, ВКЛЮЧАЮЩИЕ В СЕБЯ АДРЕСНЫЕ ДАННЫЕ

Печатающая головка, включающая в себя адресную линию для передачи набора адресов и несколько базовых компонентов, причем каждый базовый компонент включает в себя множество управляемых переключателей, связанных с адресной линией, причем каждый переключатель соответствует по меньшей мере одному адресу из набора адресов, причем каждый адрес соответствует одной из нескольких функций базового компонента. Буфер принимает последовательность пакетов данных, причем каждый пакет данных включает в себя адресные биты, представляющие один адрес из набора адресов. Адресная логика принимает адресные биты из буфера, причем для каждого пакета данных адресная логика кодирует адрес, представленный адресными битами, в адресную линию, и причем по меньшей мере один переключатель, соответствующий адресу, активирует функцию базового компонента, соответствующую адресу. 3 н. и 13 з.п. ф-лы, 13 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 672 938 C1 (51) МПК B41J 29/38 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B41J 29/38 (2006.01) (21)(22) Заявка: 2017131846, 13.02.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ХЬЮЛЕТТ-ПАККАРД ДИВЕЛОПМЕНТ КОМПАНИ, Л.П. (US) 21.11.2018 (56) Список документов, цитированных в отчете о поиске: US 2003081028 A1, 01.05.2003. US (45) Опубликовано: 21.11.2018 Бюл. № 33 2009160898 A1, 25.06.2009. US 6776544 B2, 17.08.2004. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.09.2017 (86) Заявка PCT: US 2015/015916 (13.02.2015) 2 6 7 2 9 3 8 Приоритет(ы): (22) Дата подачи заявки: 13.02.2015 R U 13.02.2015 (72) Автор(ы): БЕККЕР Крис (US), МАРТИН Эрик Т. (US), ГОЗИЛ Адам Л. (US) 2 6 7 2 9 3 8 R U WO 2016/130157 (18.08.2016) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) ПЕЧАТАЮЩАЯ ГОЛОВКА, ИСПОЛЬЗУЮЩАЯ ПАКЕТЫ ДАННЫХ, ВКЛЮЧАЮЩИЕ В СЕБЯ АДРЕСНЫЕ ДАННЫЕ (57) Реферат: ...

PROCEDURE FOR THE PRODUCTION OF A NOZZLE FOR AN INK RADIATION PRINT HEAD

EXAMINATION OF AN MICRO-ELECTROMECHANICAL DEVICE

INK SUPPLY ARRANGEMENT FOR A PORTABLE INK JET PRINTER

High speed digital printer unit

Improved MEMS fluid actuator

Micromechanical fluid supply system (fluid07)

INK SUPPLY ARRANGEMENT FOR A PORTABLE INK JET PRINTER

An ink supply unit (430) including at least one ink storage chamber (521) for holding ink for supply to a portable ink jet printing arrangement, the ink supply unit (430) including a series of spaced apart baffles (441-443) configured so as to reduce the acceleration of the ink within the unit as may be induced by the movement of the portable printer, whilst allowing for flows of ink to the printing arrangement in response to active demand therefrom. Preferably there are several chambers (521) for holding different color inks and are desirably formed through the injection molding of at least two separate parts which are preferably sealed together to form the ink supply unit (430).

FAULT DETECTION IN A MICRO ELECTRO-MECHANICAL DEVICE

A method of detecting a fault within a micro electro-mechanical device in the form of an ink ejection nozzle having an actuating arm that moves an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having a movement sensor associated with the actuating arm. The method comprises the steps of passing at least one current pulse having a predetermined duration through the actuating arm and detecting for a predetermined level of movement of the actuating arm. If a fault is detected to exist, as indicated by an insufficient level of movement of the actuating arm, at least one further current pulse having an energy level greater than the fault detecting pulse may be passed through the actuating arm in an attempt to clear the fault.

Inkjet collimator

Refill unit for filling ink storage of printer assemble

The invention provides an ink refill unit for filling an ink storage compartment which supplies ink to a printhead assembly. The ink storage compartment has an interface for holding the ink refill unit. The interface has an inlet valve which is biased to a closed position therefor. The ink refill unit comprises: a body for containing some ink; and an inlet valve actuator for opening the inlet valve when the ink refill unit is engaged with the interface so as to allow the ink in the body to be communicated with the flow of the ink storage compartment, wherein the interface has an outlet valve and the ink refill unit also comprises an outlet valve actuator for closing the outlet valve when the ink refill unit is engaged with the interface.

Ink Supply Arrangement for Portable Ink Jet Printer

본 발명의 잉크공급 유니트(430)는, 휴대식 잉크젯 인쇄장치에 공급하기 위한 잉크를 유지하는 적어도 하나의 잉크 저장챔버(521)를 포함하고, 상기 휴대식 프린터의 이동에 의해 생길 수 있는 상기 유니트 내의 잉크 가속을 줄이도록 구성되는 한편, 그로부터 활성 요구에 반응하여 상기 인쇄장치로의 잉크 흐름을 허용하는 서로 떨어져 있는 일련의 배플들(Baffles, 441-443)을 포함한다. 바람직하게는, 여러 칼라를 유지하기 위한 몇개의 챔버(521)들이 존재하며, 상기 잉크공급 유니트(430)를 형성하기 위하여 사출성형을 통하여 바람직하게 함께 밀봉된 적어도 별개의 두 부분으로 형성된다. The ink supply unit 430 of the present invention includes at least one ink storage chamber 521 for holding ink for supplying to a portable inkjet printing apparatus, and ink in the unit which may be generated by the movement of the portable printer. And a series of distant baffles 441-443 which are configured to reduce acceleration while allowing ink flow to the printing device in response to an active request therefrom. Preferably, there are several chambers 521 for holding several colors, and are formed in at least two separate parts which are preferably sealed together through injection molding to form the ink supply unit 430.

APPARATUS FOR TESTING INTEGRATED CIRCUITRY

CARTRIDGE UNIT HAVING NEGATIVELY PRESSURIZED INK STORAGE

A cartridge unit (10) for an inkjet printer, with an ink storage compartment (46) and an ink feed system (30) for connection to a printhead (22). The ink storage compartment has a displaceable wall section (48) so that its variable storage volume (46) is variable. The displaceable wall (48) is biased (54) toward expanding the variable storage volume (46) so that there is a negative pressure in the ink storage volume (46), such that ink does not inadvertently leak from the ink ejection nozzles. Without negative pressure, an ink meniscus can bulge from the nozzles. The meniscus will 'pin' itself to the edge of the nozzle aperture and may be strong enough to stop ink leakage. However, paper dust or other contaminants will eventually stop the bulging meniscus from pinning itself on the nozzle rim and leakage occurs. A negative pressure in the ink storage volume makes the meniscus invert back into the nozzle aperture. As the meniscus does not bulge out of the nozzle, paper dust on the nozzle ...

Inkjet collimator

A printhead for an ink jet printer that has a collimator 84 associated with each of the ink nozzles 22 to retain any misdirected ink droplets 150 ejected from damaged nozzles 22. The collimators 84 are formed in a nozzle guard 80 covering the exterior or the nozzle array. Each collimator 84 is an aperture in the form of an elongate passage where lengthwise dimension far exceeds the bore of the passage.

Printhead Incorporating Rows Of Ink Ejection Nozzles

A printhead is provided for an inkjet printer. The printhead includes a wafer assembly defining rows of spaced apart ink supply channels. Rows of ink ejection nozzle groups extend from the wafer assembly. Each nozzle group includes a pair of rows of ink ejection nozzles. Each ink ejection nozzle includes an ink ejection head from which an elongate actuator tail extends. All of the ink ejection heads of each group are in fluid communication with a respective ink supply channel.

Capper assembly for a pagewidth printhead cartridge

A capping assembly caps a pagewidth printhead of an inkjet printer by moving into and out of a body that has a surface opposite the printhead, The surface has a slot in it open to the interior of the body, The body is configured to extend the length of the printhead, and a capping element is housed within the body. The capping element has a rim portion adapted to cap at least a portion of said printhead and it is movable with respect to said body between a first and a second position. In the first position, the rim portion extends from the body, and in the second position, the rim portion is contained within the body.

Reservoir assembly for a pagewidth printhead cartridge

The invention relates to a reservoir assembly for a pagewidth printhead cartridge. The cartridge has a fluid distribution molding with priming inlets in fluid communication with fluid channels for supplying printing fluid to a plurality of printhead integrated circuits. The assembly includes a reservoir compartment arranged in fluid communication with the fluid channels via a fluid outlet. The compartment includes porous absorbent material located inside the compartment to absorb printing fluid delivered via the priming inlets. A port is arranged in a side wall of the compartment for receiving a needle from a syringe to prime the reservoir compartment with printing fluid.

INK REFILL UNIT WITH INCREMENTAL INK EJECTION FOR A PRINT CARTRIDGE

An ink refill unit for a print cartridge is provided. The unit includes a housing which defines a fluid path in fluid communication with an outlet. The unit also includes an ink reservoir having an ejection port arranged in fluid communication with the fluid path inside the housing, and an ejector assembly configured to incrementally eject ink from the reservoir when the assembly is actuated by the print cartridge.

Fabricating an inkjet printhead with grouped nozzles

A method of construction of an inkjet printhead having a large array of inkjet nozzle arrangements by defining a single inkjet nozzle arrangement for the ejection of ink from a single nozzle and utilizing a series of translations and rotations of the single inkjet nozzle arrangement to form all the inkjet nozzles of the inkjet print head. The utilizing step can comprise: initially forming those nozzles in a pod; forming a group of pods corresponding to each color utilized in the print head; forming a firing group of pods; forming a segment of the printhead; forming each segment of the print head. The inkjet nozzle arrangements can include a series of layers deposited and etch utilizing a mask.

Printhead integrated circuit for a pagewidth inkjet printhead

A printhead integrated circuit for a pagewidth printhead includes an elongate substrate that defines a plurality of ink inlet passages. A drive circuitry layer is positioned on the substrate. A plurality of nozzle chamber structures is positioned on the substrate and defines nozzle chambers in fluid communication with respective ink inlet passages and ink ejection ports in fluid communication with respective nozzle chambers. A plurality of ink ejection members is received in respective nozzle chambers. The ink ejection members are reciprocally displaceable to eject ink from the ink ejection ports. Elongate actuators are each fast at a fixed end with the substrate and are attached to respective ink ejection members at a free end. The actuators are connected to the drive circuitry layer to displace respective ink ejection members on receipt of electrical pulses from the drive circuitry layer. The nozzle chamber structures and associated elongate actuators are positioned on the substrate to ...

Ink supply unit for an ink jet printer

An ink supply unit is provided for supplying ink to a printhead in a printer. The supply unit includes an elongate housing defining a longitudinally extending channel. A baffle member is configured to be received in the channel to define ink chambers which can each contain a respective type of ink. The baffle member is configured to inhibit excessive movement of ink in each chamber. An elongate manifold defines a plurality of sets of ink passages and is configured to be located with respect to the baffle member so that ink from each ink chamber can be provided to a respective set of ink passages. The manifold further defines a recess in which an ink ejecting printhead can be received. Each ink passage tapers to define a respective outlet located within the recess which can be engaged in fluid communication with the printhead.

Thermo-mechanical actuator drop-on-demand apparatus and method with multiple drop volumes

An apparatus and method of operating a liquid drop emitter, such as an ink jet device, for emitting liquid drops of different volumes. The liquid drop emitter comprises a chamber, filled with a liquid, having a nozzle for emitting drops of the liquid, a thermo-mechanical actuator having a moveable portion within the chamber for applying pressure to the liquid at the nozzle, and apparatus adapted to apply heat pulses to the thermo-mechanical actuator. The method for operating comprises applying a first heat pulse having a first power P 1 , first pulse duration τ p1 , and first energy E 1 =P 1 ×τ p1 , displacing the movable portion of the actuator so that a drop is emitted having a first drop volume V d1 , and traveling substantially at the target velocity v 0 ; and applying a second heat pulse having a second power P 2 , second pulse duration τ p2 , and second energy E 2 =P 2 ×τ p2 , displacing the movable portion of the actuator so that a drop is emitted having a second drop volume V d2 and traveling substantially at the target velocity v 0 , wherein V d2 >V d1 , E 2 >E 1 , τ p2 >τ p1 , and P 2 <P 1 . An alternate method for operating causes the emission of drops having different volumes traveling at different velocities wherein all velocities are within a pre-determined drop velocity range, v d min to v d max . Further methods for operating an ink jet printhead cause the emission of drops having different volumes and velocities wherein the triggering of the drop emission is delayed so as to result in synchronized arrival times at a print plane.

Air supply arrangement for a printer

A pagewidth inkjet printer which includes printhead with a plurality of print nozzles for ejecting ink drops towards a print medium. A space is defined between the nozzles and a nozzle guard with a series of apertures aligned with the nozzles. During printing operation, positive air pressure is supplied to this space, the air exiting the space through the apertures, preventing blockage by paper dust. When not printing, the air supply is closed off by air valve member and a capping member on a rotary platen contacts the printhead to maintain a closed atmosphere at the surface of the nozzles, reducing drying of ink on the nozzles.

PAGEWIDTH INKJET PRINTHEAD CONFIGURED SUCH THAT PRINTED DOT DENSITY EXCEEDS NOZZLE DENSITY

A stationary pagewidth inkjet printhead has one or more nozzle rows extending along a longitudinal axis of the printhead. Each nozzle is configured to fire a droplet of ink at a plurality of predetermined different dot positions along the longitudinal axis, such that a printed dot density exceeds a nozzle density of the printhead.

A THERMAL ACTUATOR AND LIQUID DROP EMITTER

モノリシック印刷ヘッド内のデータ配分

... 単一のシリコンチップ上に集積された複数の印刷アクチュエータと駆動回路を持つ印刷ヘッドのシフトレジスタおよび駆動回路に必要なトランジスタの数を、他の場合であれば必要な数より少なくした装置。この装置は、印刷ヘッドアクチュエータに送られたデータが、シフトレジスタクロックの持続時間より長い間有効でなければならないような印刷ヘッドに関連する。本装置の主な目的は、このような場合に通常必要な並列負荷保持レジスタを使用しないですむようにすることである。この装置は、この目的を、その各段が、印刷アクチュエータがイネーブルになっている間、データを有効に保持するために、その対応するドライバ段からのゲート制御されたフィードバックを含むダイナミックシフトレジスタと共に、アクチュエータの各グループに対して、二位相ゲート制御クロック発生装置を使用することによって達成する。 ...

THERMISCHER STELLANTRIEB UND FLÜSSIGKEITSTRÖPFCHENGEBER

ACTUATOR EXPENSIVE DEVICE IN AN MICRO-ELECTROMECHANICAL DEVICE FOR DISCHARGING LIQUID

INK RADIATION GUNSIGHT

Inkjet printer unit having a high speed print engine

INK SUPPLY ARRANGEMENT FOR A PORTABLE INK JET PRINTER

An ink supply unit (430) including at least one ink storage chamber (521) for holding ink for supply to a portable ink jet printing arrangement, the ink supply unit (430) including a series of spaced apart baffles (441-443) configured so as to reduce the acceleration of the ink within the unit as may be induced by the movement of the portable printer, whilst allowing for flows of ink to the printing arrangement in response to active demand therefrom. Preferably there are several chambers (521) for holding different color inks and are desirably formed through the injection molding of at least two separate parts which are preferably sealed together to form the ink supply unit (430).

CALIBRATING A MICRO ELECTRO-MECHANICAL DEVICE

A method of calibrating a micro electro-mechanical device in the form of an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having also a movement sensor associated with the actuating arm. The method comprises the steps of passing a series of current pulses of successively increasing duration tp through the actuating arm over a time period t, detecting for a predetermined level of movement of the actuating arm within a predetermined time window tw, and calibrating the device for subsequent actuation by a current pulse having a duration tp sufficient to produce the predetermined level of movement within the predetermined time window tw.

노즐 판 상에 공통 전도성 트랙을 구비한 잉크젯 프린트헤드

... 구동회로 층을 포함하는 기판; 기판의 상부 표면에 배치되고 프린트헤드를 따라서 종방향으로 연장된 하나 이상의 노즐 열들로 배열된 복수의 노즐 조립체들; 프린트헤드를 가로질러 연장된 노즐 판; 및 프린트헤드를 따라서 종방향으로 노즐 열들과 평행하게 연장된 노즐 판에 배치된 전도성 트랙을 포함하는 잉크젯 프린트헤드. 전도성 트랙은 구동회로 층과 전도성 트랙 사이에 연장된 복수의 전도성 기둥들을 통해 구동회로층의 공통 기준 평면에 연결된다.

PRINTER WITH MOTOR DRIVEN MAINTENANCE STATION

PRINTER WITH MOTOR DRIVEN MAINTENANCE STATION An inkjet printer comprising: a printhead with an array of nozzles; a maintenance assembly for moving between a capped position where the assembly covers the array of nozzles, and an uncapped position spaced from the array of nozzles; and a motorized drive for moving the maintenance assembly between the capped position and the uncapped position; wherein the maintenance assembly has a capper for covering the array and a cleaner for wiping the array, such that the motorized drive uses a cam shaft arrangement for moving the cleaner relative to the capper.

AIR SUPPLY ARRANGEMENT FOR A PRINTER

A pagewidth inkjet printer is described which includes printhead (11) with a plurality of print nozzles (30) for ejecting ink drops towards a print medium. A space is defined between the nozzles and a nozzle guard (43) with a series of apertures (44) aligned with the nozzles. During printing operation, positive air pressure is supplied to this space, the air exiting the space through the apertures, preventing blockage by paper dust. When not printing, the air supply is closed off by air valve member (66) and a capping member (80) on a rotary platen (14) contacts the printhead to maintain a closed atmosphere at the surface of the nozzles, reducing drying of ink on the nozzles.

Ink refill unit with keyed connection ink cartridge

An ink refill unit for replenishing an ink cartridge in an inkjet printer, the ink cartridge having an interface for engaging the ink refill unit, the ink refill unit comprising: a body containing a quantity of ink; and, an ink outlet for engaging an ink inlet in the interface; wherein a feature of the ink refill unit and a feature of the interface form a pair of complementary features that have a keyed connection with each other when the ink refill unit engages the interface.

Ink refill unit for refilling a high speed print engine

A printing fluid dispenser for a printing fluid refill cartridge comprising: a body storing printing fluid having an outlet through which the printing fluid is dispensed; and a selector arranged to select the amount of the printing fluid to be dispensed from the body.

Ink jet printer nozzle assembly with micro-electromechanical paddles

An inkjet printer nozzle assembly includes a substrate. Drive circuitry is positioned on the substrate. A nozzle chamber structure extends from the substrate and defines a nozzle chamber into which ink can be fed and an ink ejection port though which the ink can be ejected. An elongate actuator assembly is fast with the substrate at one end to be connected to the drive circuitry and extends cantilever-fashion towards the nozzle chamber structure. A paddle is fast with an opposite free end of the actuator assembly, the paddle being positioned in the nozzle chamber so that displacement of the paddle serves to eject ink from the ink ejection port.

Printhead Assembly With Pagewidth Ink And Data Distribution

A pagewidth printhead assembly for an inkjet printer, that has a body portion for receiving ink from an ink source, an elongate ink distribution member mounted to the body portion, the body portion and the elongate ink distribution member being in fluid communication at a series of spaced locations along the length of the elongate ink distribution member, one or more integrated circuits fixed to the ink distribution member, the or each integrated circuit having nozzles for ejecting ink supplied by the distribution member onto a passing media substrate, and an electrical connector for transmitting data to the or each integrated circuit, the electrical connector having an elongate array of contacts for electrical connection with a corresponding array of contacts on the inkjet printer.

SIGNALING METHOD FOR PRINTHEAD

A signaling method for a printhead with nozzles for ejecting ink, and associated drive circuitry for operating the nozzles that receives drive signals from a print engine controller. The print engine controller generates the drive signals in accordance with print data defining a print job for the printhead. A pre-heating determination unit selectively provides the printhead with a pre-heat signal derived from a combination of signals, at least one of the signals in the combination being the drive signals from the print engine controller. Processing within the controller is more efficient if determining whether pre-heating is necessary is restricted only to those nozzles which are to receive print data.

Cradle unit for electrically engaging with a pagewidth printhead cartridge

A cradle unit for an inkjet printer comprising: a body complementary to a removable inkjet cartridge of a type having a pagewidth printhead and an ink supply; and a controller for controlling the operation of the printhead to facilitate printing; wherein, a plurality of terminals are located along the length of the body to contact corresponding terminals located along the length of the removable inkjet cartridge to enable electrical communication between the controller and the cartridge.

IMAGE FORMING APPARATUS, CONTROL METHOD AND NON-TRANSITORY RECORDING MEDIUM

An image forming apparatus for forming an image with a coloring material on a recording medium includes a region specifier that specifies a region that becomes a margin when the image is formed on the recording medium; and a pattern image generator that generates image data of a pattern image to be formed in the region based on a size of the region and a type of the coloring material. 1. An image forming apparatus for forming an image with a coloring material on a recording medium comprising:a region specifier that specifies a region that becomes a margin when the image is formed on the recording medium; anda pattern image generator that generates image data of a pattern image to be formed in the region based on a size of the region and a type of the coloring material.2. The image forming apparatus according to claim 1 ,wherein the pattern image generator determines a size of a pattern in the pattern image for each type of the coloring material.3. The image forming apparatus according to further comprising:a density determiner that determines a density of a pattern in the pattern image based on the size the region and the type of the coloring material.4. The image forming apparatus according to claim 1 ,wherein the coloring material is a liquid.5. The image forming apparatus according to claim 4 ,wherein the pattern image generator determines a size of a pattern in the pattern image for each type of the liquid.6. The image forming apparatus according to further comprising:a liquid drop number determiner that determines a number of liquid drops of the liquid based on the size of the region and the type of the liquid.7. The image forming apparatus according to claim 4 ,wherein a liquid receiving part is arranged between the plurality of recording media that are conveyed, andwherein the image forming apparatus forms the pattern image in the region, the liquid receiving part, or both.8. The image forming apparatus according to claim 4 ,wherein a discharging speed of the ...

Inkjet printer using meniscus rim in nozzle chamber

An inkjet printer comprising at least one inkjet printhead printhead having a series of ink ejection nozzles for the ejection of ink, each of said nozzles interconnecting a nozzle chamber with an external atmosphere, each said nozzle having a first meniscus rim around which an ink meniscus normally forms, and an extended ink flow prevention rim spaced outwardly from said first meniscus rim and substantially encircling said first meniscus rim, arranged to prevent the flow of ink across the surface of said inkjet printhead.

Fabricating an inkjet printhead with grouped nozzles

A method of construction of an inkjet printhead having a large array of inkjet nozzle arrangements by defining a single inkjet nozzle arrangement for the ejection of ink from a single nozzle and utilizing a series of translations and rotations of the single inkjet nozzle arrangement to form all the inkjet nozzles of the inkjet print head. The utilizing step can comprise: initially forming those nozzles in a pod; forming a group of pods corresponding to each color utilized in the print head; forming a firing group of pods; forming a segment of the printhead; forming each segment of the print head. The inkjet nozzle arrangements can include a series of layers deposited and etch utilizing a mask.

Refill unit for ink cartridge in printer with ink suitability verification

A refill unit for refilling an ink cartridge that forms part of an inkjet printer, the printer also having a printhead, control circuitry and an interface for releasably engaging the refill unit, the refill unit comprising: a body containing a quantity of ink; an ink outlet; and, a memory circuit for storing information relating to at least one characteristic of the ink; wherein during use, the memory circuit allows to the control circuit to interrogate it to verify that the ink in the refill unit is suitable for the printer.

INK JET RECORDING APPARATUS

An ink jet recording method for recording an image on a recording medium using a recording head includes executing relative movement between the recording medium and the recording head in a second direction intersecting a first direction in which a plurality of recording elements are arrayed. The recording head is controlled so that the plurality of recording elements in each group of respective driving blocks of recording elements are driven in order and at a predetermined time interval between respective driving blocks. A plurality of element arrays are driven so that pixels, based on recording data for one column extending in the first direction, are recorded by using the plurality of element arrays within an area of the recording medium corresponding to relative movement width of the relative movement in the second direction within the predetermined time interval. 1. An ink jet recording method for recording an image on a recording medium using a recording head including a plurality of element arrays , wherein each element array includes a plurality of recording elements that are arrayed in a first direction and used for discharging ink for forming pixels on a recording medium , wherein the plurality of recording elements of each element array are divided into a plurality of groups where each group includes a plurality of recording elements being continuously arranged and assigned to different driving blocks for driving the recording elements , and wherein a number of the element arrays is equal to or larger than a number of recoding elements in a group , the ink jet recording method comprising:executing relative movement between the recording medium and the recording head in a second direction intersecting the first direction; andcontrolling the recording head so that the plurality of recording elements in each group of the respective driving blocks are driven in order and at a predetermined time interval between the respective driving blocks,wherein the ...

Pagewidth inkjet printhead assembly with longitudinally extending sets of nozzles

A pagewidth inkjet printhead assembly includes an elongate substrate that defines a plurality of ink inlet channels. A drive and control circuitry layer is positioned on the substrate. A plurality of nozzle chamber structures is arranged on the substrate to define a number of longitudinally extending sets of nozzle chamber structures. Each set has a series of adjacent pairs of nozzle chamber structures. Each nozzle chamber structure defines a nozzle chamber in fluid communication with a respective ink inlet channel and an ink ejection port in fluid communication with the nozzle chamber. A plurality of elongate micro-electromechanical actuators is fast at one end to the substrate to receive electrical drive signals from the drive and control circuitry layer. A plurality of ink ejecting members is positioned in respective nozzle chambers. Each ink ejecting member is fast with a respective opposite end of each micro-electromechanical actuators to be displaced relative to the substrate on receipt ...

System for priming a pagewidth printhead cartridge

An ink priming system for a cartridge unit of the type having a pagewidth printhead assembly in fluid communication with one or more ink storage compartments is provided. The system comprises a priming inlet of the printhead assembly for receiving a supply of ink for priming the cartridge unit, an ink flow passage providing fluid connection between the printhead assembly and one of the ink storage compartments, and a bypass flow passage providing additional fluid connection between the ink flow passage and the ink storage compartment. The ink supplied to the priming inlet of the printhead assembly flows from the printhead assembly to the ink storage compartment via the ink flow passage and the bypass flow passage to prime both the printhead assembly and the ink storage compartment with ink simultaneously.

Cradle Unit For Receiving A Print Cartridge To Form A Print Engine

The invention relates to a cradle unit for receiving a print cartridge to form a print engine. The cradle unit includes a main body defining an opening for receiving said cartridge, the main body having a frame structure including end plates with drive and exit rollers mounted therebetween. The cradle unit also includes a printed circuit board (PCB) pivotally mounted between the end plates for housing control electronics for controlling the operation of the print engine. Also included is a cover assembly for securing said cartridge in the opening, the cover assembly pivotally mounted between the end plates, the cover assembly configured to pivot the PCB into electrical contact with a printhead controller on the cartridge when in a closed position, and to pivot the PCB out of electrical connection with said printhead controller when in an open position.

INKJET RECORDING HEAD AND RECORDING APPARATUS

PROBLEM TO BE SOLVED: To decrease the number of head contacts which increases along with increases in the numbers of ink colors and nozzles used in a recording head and the length of the recording head. SOLUTION: A reception unit which receives a serialized control parameter having an identification code indicating a normal drive pulse for discharging ink or a pulse short enough not to discharge ink is arranged on the head substrate included in a recording head. Further, a normal pulse generation unit which generates the normal drive pulse based on a received control parameter, and a short pulse generation unit which generates the short pulse based on a received control parameter are arranged on the head substrate. Based on the identification code of the control parameter, it is controlled to output the normal drive pulse or short pulse. COPYRIGHT: (C)2012,JPO&INPIT ...

УСТРОЙСТВО ВЫБРОСА ТЕКУЧЕЙ СРЕДЫ С ОДНОСТОРОННИМ ТЕМПЕРАТУРНЫМ ДАТЧИКОМ

TINTENZUFUHRANORDNUNG FÜR EINEN TRAGBAREN TINTENSTRAHLDRUCKER

INK MEMORY SUBJECTED CARTRIDGE UNIT WITH A WITH NEGATIVE PRESSURE

A micromechanical device and method

Network inkjet printer unit having multiple media input trays

CALIBRATING A MICRO ELECTRO-MECHANICAL DEVICE

A method of calibrating a micro electro-mechanical device in the form of an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having also a movement sensor associated with the actuating arm. The method comprises the steps of passing a series of current pulses of successively increasing duration tp through the actuating arm over a time period t, detecting for a predetermined level of movement of the actuating arm within a predetermined time window tw, and calibrating the device for subsequent actuation by a current pulse having a duration tp sufficient to produce the predetermined level of movement within the predetermined time window tw.

TESTING A MICRO ELECTRO-MECHANICAL DEVICE

A method of testing a micro electro-mechanical device in the form of an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having also a movement sensor associated with actuating arm. The method comprises the steps of passing a current pulse having a predetermined duration or a series of current pulses having successively increasing durations through the actuating arm, and detecting for a predetermined level of movement of the actuating arm.

TESTING A MICRO ELECTRO-MECHANICAL DEVICE

A method of testing a micro electro-mechanical device in the form of an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having also a movement sensor associated with actuating arm. The method comprises the steps of passing a current pulse having a predetermined duration or a series of current pulses having successively increasing durations through the actuating arm, and detecting for a predetermined level of movement of the actuating arm.

Inkjet printhead having electrical-isolation thermal bend actuator heating element

INKJET NOZZLE ASSEMBLY WITH DROP DIRECTIONALITY CONTROL VIA INDEPENDENTLY ACTUABLE ROOF PADDLES

An inkjet nozzle assembly having: a nozzle chamber for containing ink, the nozzle chamber including a floor and a roof having a nozzle opening defined therein; and a plurality of moveable paddles defining part of the roof. The plurality of paddles are actuable to cause ejection of an ink droplet from the nozzle opening. Each paddle includes a thermal bend actuator, and each actuator is independently controllable via respective drive circuitry such that a direction of droplet ejection from the nozzle opening is controllable by independent movement of each paddle.

Inkjet printhead with shared ink spread restriction walls

A printhead for an inkjet printer. The printhead comprising a wafer assembly defining a plurality of ink supply channels; and plural groups of ink ejection nozzle arrangements extending from the wafer assembly, each group of ink ejection nozzle arrangements sharing a common ink supply channel. Each group of ink ejection nozzle arrangements includes a plurality of ink ejection nozzle arrangements arranged in a pair of rows. Each group of ink ejection nozzles includes one ink spread restriction wall shared by the group, the ink spread restriction wall being interposed between each ink ejection nozzle of the group and so as to at least partially surround each ink ejection nozzle of the group. The shared ink spread restriction wall is spaced apart from each ink ejection nozzle arrangement to define a plurality of ink spread restriction pits between the common ink spread restriction wall and respective ink ejection nozzle arrangements.

Ink jet nozzle arrangement incorporating mechanically coupled bend actuator arms

An ink jet nozzle arrangement is provided for ejecting ink. The ink jet nozzle arrangement includes a substrate that defines an ink inlet. Integrated circuitry is positioned on the substrate. A nozzle structure is positioned on the substrate and defines a nozzle chamber in fluid communication with the ink inlet and an ink ejection port in fluid communication with the nozzle chamber from which ink can be ejected. An elongate actuator has a fixed end fast with respect to the substrate and a free end extending into the nozzle chamber. The actuator includes a pair of mechanically coupled and electrically isolated arms extending along the substrate with one of the arms being interposed between the other arm and the substrate. The interposed arm is electrically coupled to the integrated circuitry. Responsive to receiving an electrical signal from the integrated circuitry, the actuator bends so as to induce movement of its free end and thereby ejects ink in the nozzle chamber from the ink ejection ...

Printhead integrated circuit with coupled arrays of transistor drive circuits and nozzles

A printhead integrated circuit that has an elongate wafer substrate with three or more columnar arrays of nozzle arrangements fabricated on the elongate wafer substrate. Each columnar array extends parallel to the longitudinal extent of the elongate wafer substrate. Each of the columnar array of nozzle arrangements providing ink drops of a different color. Three columnar arrays of transistor drive circuits fabricated on the wafer substrate adjacent the columnar arrays of nozzle arrangements for activating said columnar arrays of nozzle arrangements; wherein, consecutive nozzle arrangements are spaced such that a series of dots can be printed with a resolution of over 1000 dpi.

Pagewidth printhead assembly having abutting integrated circuits arranged thereon

A pagewidth printhead assembly for an inkjet printer comprising: a body portion for receiving ink from one or more ink sources and distributing the ink along the length of the printhead assembly; a plurality of integrated circuits extending the length of the printhead assembly, each integrated circuit having a plurality of nozzles formed in rows thereon, each of the nozzles being arranged in use to deliver the ink onto passing print media; and an ink distribution member upon which the integrated circuits are fixed and which distributes the ink from the body portion to the nozzles of the integrated circuits; wherein the integrated circuits are aligned in an abutting arrangement across the length of the ink distribution member.

Inkjet printhead having modules with displaced inkjet rows

An inkjet printhead is provided having a plurality of printhead modules arranged across a pagewidth to be printed. Each printhead module has a plurality of rows of ink ejection nozzles. At least some of the rows include at least one displaced row portion. The displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.

Print head for a pagewidth printer incorporating a replicated nozzle arrangement pattern

A print head for a pagewidth printer includes a substrate that defines a plurality of ink inlet channels. A plurality of nozzle arrangements is positioned on the substrate. The nozzle arrangements are in fluid communication with the ink inlet channels and are the product of an integrated circuit fabrication process. The nozzle arrangements define a pattern which is the result of carrying out successive replications of one nozzle arrangement with predetermined rotations and multipliers on a reference grid.

Ink supply unit with a baffle arrangement

An ink supply unit is provided for a printer. The unit includes an elongate printhead configured to eject ink. An ink distribution manifold defines a printhead aperture in which the printhead is received and a series of slots through which ink can flow to the printhead. A filter can be fitted around the manifold to filter ink. A baffle unit is provided in which the ink distribution manifold and filter can be inserted. A housing is provided in which the baffle unit can be encased to form a plurality of respective ink chambers.

Method of expelling ink from nozzles in groups, alternately, starting at outside nozzles of each group

A method of expelling ink from a printhead module including at least one row that comprises a plurality of adjacent sets of n adjacent nozzles, each of the nozzles being configured to expel ink in response to a fire signal, the method comprising providing, for each set of nozzles, a fire signal in accordance with the sequence: [nozzle position 1 , nozzle position n, nozzle position 2 , nozzle position (n-1), . . . , nozzle position x], wherein nozzle position x is at or adjacent the centre of the set of nozzles.

Method of detecting a blockage within an inkjet nozzle

A method of detecting a blockage within an inkjet nozzle is provided. The inkjet nozzle comprises an ink chamber, an opening defined in a roof of the ink chamber, an actuating arm movable between a rest position and an operating position, and a movement sensor associated with the actuating arm. The movement sensor is activated by movement of the actuating arm to a predetermined position beyond the operating position. The detection method comprises the steps of: (a) passing a blockage-detecting current pulse having a predetermined duration t_p through the actuating arm; (b) detecting for movement of the actuating arm to the predetermined position; and (c) comparing the detected movement with the movement in an unblocked condition. The movement of the actuating arm in a blocked condition is less than movement of the actuating arm in an unblocked condition.

Dispenser unit for refilling printing unit

A dispenser unit for dispensing ink to refill a supply of printing fluid in a printing unit includes a body assembly; a plurality of ink outlets provided on a bottom side of the body assembly, the plurality of ink outlets each for engaging with respective ink inlets of the printing unit; a compressible ink storage volume provided within the body assembly, the compressible ink storage volume having a sealed end and an outlet end connected to no more than one of the plurality of ink outlets; a plunger provided within the housing and abutting the sealed end of the compressible ink storage volume; and a compressing actuator for compressing the plunger against the sealed end of the compressible ink storage volume, thereby facilitating a dispensing of ink from within the compressible ink storage volume into the printing unit via the ink outlet to which the outlet end of the compressible ink storage volume is connected.

Inkjet printhead having common conductive track on nozzle plate

An inkjet printhead includes: a substrate having a drive circuitry layer; a plurality of nozzle assemblies disposed on an upper surface of the substrate and arranged in one or more nozzle rows extending longitudinally along the printhead; a nozzle plate extending across the printhead; and a conductive track disposed on the nozzle plate which extends longitudinally along the printhead and parallel with the nozzle rows. The conductive track is connected to a common reference plane in the drive circuitry layer via a plurality of conductor posts extending between the drive circuitry layer and the conductive track.

Printhead IC With Low Velocity Droplet Ejection

An inkjet printhead that has an array of droplet ejectors supported on a printhead integrated circuit (IC). Each of the droplet ejectors has a nozzle aperture and an actuator for ejecting a droplet of ink through the nozzle aperture. The droplet ejectors are configured to eject ink droplets at a velocity less than 4.5 m/s.

PAGEWIDTH PRINTHEAD HAVING SMALL PRINT ZONE

A printer comprising a stationary printhead extending across a paper path is provided. The printhead comprises a plurality of color channels, each color channel comprising at least one nozzle row extending along the length of the printhead. Each nozzle in a color channel ejects the same colored ink. The printhead has a print zone of less than 10 mm, wherein the print zone is defined as the distance covered by all nozzle rows of the printhead in a paper feed direction.

Inkjet Printhead Having Modules With Displaced Inkjet Rows

An inkjet printhead is provided having a plurality of printhead modules arranged across a pagewidth to be printed. Each printhead module has a plurality of rows of ink ejection nozzles. At least some of the rows include at least one displaced row portion. The displaced row portions of at least some of the rows are different in length than the displaced row portions of at least some of the other rows.

Cover assembly for a cradle unit having an ink refilling actuator provided therein

A cover assembly for a cradle unit of an inkjet printer having a body complementary to a removable inkjet cartridge of a type having a pagewidth printhead and an ink supply and a controller for controlling the operation of the printhead to facilitate printing; the cover assembly comprising: a refill actuator for dispensing ink from an ink refill unit into said refillable ink supply.

Method of compensating for dead nozzles in stationary pagewidth printhead

A method of compensating for a dead nozzle in a stationary pagewidth printhead. The method includes the steps of: (i) identifying the dead nozzle; (ii) selecting a functioning nozzle in a same nozzle row as the dead nozzle; and firing ink droplets from the selected functioning nozzle at a primary dot position associated with the dead nozzle.

Printhead integrated circuit with printable zone longer than nozzle row

A printhead integrated circuit (IC) for a stationary pagewidth printhead, includes nozzle rows extending along a longitudinal axis thereof. A length of a printable zone corresponding to the nozzle row is longer than a length of the nozzle row.

Printhead integrated circuit having common conductive track fused to nozzle plate

An inkjet printhead integrated circuit (IC) includes: a substrate having a drive circuitry layer; a plurality of nozzle assemblies disposed on an upper surface of the substrate and arranged in one or more nozzle rows extending longitudinally along the printhead IC; a nozzle plate extending across the printhead IC; and a conductive track fused to the nozzle plate which extends longitudinally along the printhead IC and parallel with the nozzle rows. The conductive track is connected to a common reference plane in the drive circuitry layer via a plurality of conductor posts extending between the drive circuitry layer and the conductive track.

Element substrate, liquid discharge head, and printing apparatus

An element substrate, according to an embodiment of this present invention, capable of detecting the behavior of a liquid at a high sensitivity, comprises: a first electrothermal transducer configured to generate heat to discharge a liquid; at least one temperature detection element arranged near the first electrothermal transducer; and a second electrothermal transducer configured to generate heat in association with a temperature detection operation by the at least one temperature detection element.

FLUID EJECTION APPARATUS WITH SINGLE-SIDE THERMAL SENSOR

An example provides a fluid ejection apparatus including a fluid feed slot to supply a fluid to a plurality of drop ejectors, a first rib at a first side of the fluid feed slot and supporting drop ejection circuitry to control ejection of drops of the fluid from the plurality of drop ejectors, and a second rib at a second side, opposite the first side, of the fluid feed slot supporting a thermal sensor to facilitate determination of a temperature of the first rib and the second rib. 1. A fluid ejection printhead comprising:a fluid feed slot to supply a fluid to a plurality of drop ejectors;a first rib at a first side of the fluid feed slot and supporting drop ejection circuitry to control ejection of drops of the fluid from the plurality of drop ejectors; anda second rib at a second side, opposite the first side, of the fluid feed slot and supporting a thermal sensor to facilitate determination of a temperature of the first rib.2. The fluid ejection printhead of claim 1 , wherein the first rib is wider than the second rib.3. The fluid ejection printhead of claim 1 , wherein the fluid feed slot is disposed between the first rib and the second rib.4. The fluid ejection printhead of claim 1 , wherein the plurality of drop ejectors comprise a first plurality of drop ejectors over the first rib and a second plurality of drop ejectors over the second rib.5. The apparatus of claim 4 , wherein the drop ejection circuitry is to control ejection of drops from the first plurality of drop ejectors and the second plurality of drop ejectors.6. The apparatus of claim 1 , wherein the plurality of drop ejectors comprises a plurality of columns of the drop ejectors claim 1 , and wherein a first column of the drop ejectors is disposed over the first rib and a second column of drop ejectors is disposed over the second rib.7. The apparatus of claim 1 , wherein the thermal sensor comprises a thermal sense resistor.8. The apparatus of claim 7 , wherein the thermal sense resistor comprises ...

LIQUID EJECTING HEAD, SUBSTRATE FOR LIQUID EJECTING HEAD, AND PRINTING APPARATUS

A print head includes upper protective members located at positions corresponding to heat generating resistor elements to protect the heat generating resistor elements, and further, a part of the protective member being eluted to ink when a current flows inside in a state in which the ink is reserved in the pressure chambers. The print head includes a drive element and a logic circuit capable of allowing a current to independently flow in each of the upper protective layers so as to elute a part of the upper protective layer, in which the current flows, to the ink. 1. A liquid ejecting head comprising:a plurality of pressure chambers that can reserve liquid therein;heat generating resistor elements that are arranged in a manner corresponding to each of the pressure chambers, and can heat the liquid reserved in the pressure chambers;a plurality of ejection ports, through which the liquid is ejected by heat generated by the drive of the heat generating resistor elements;a plurality of protective members that are located at positions corresponding to the heat generating resistor elements to protect the heat generating resistor elements, and further, can be eluted to the liquid with the application of a voltage in a state in which the liquid is reserved in the pressure chambers; anda protective member eluting unit that can select a predetermined protective member out of the plurality of protective members and can apply a voltage to the protective member.2. The liquid ejecting head according to claim 1 , wherein the protective member eluting unit includes:a switching unit that is connected to each of the plurality of protective members to switch the supply of the voltage to the protective member; anda control circuit configured to control the switch in the switching unit.3. The liquid ejecting head according to claim 2 , wherein the control circuit includes a logic gate capable of sending claim 2 , to the switching unit claim 2 , a signal configured to allow the voltage ...

Printhead employing data packets including address data

A printhead includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices, each activation device corresponding to a different address of a set of addresses. A buffer receives data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive corresponding to the address. For each data packet, the buffer directs the address data to address logic and places the print data on the respective data line, and the address logic encodes the address represented by the address data onto the address line. For each primitive, the activation device corresponding to the address on the address bus activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line.

PRINTING APPARATUS, PRINTING METHOD AND STORAGE MEDIUM

A printing apparatus having a plurality of print element arrays including a plurality of printing elements that are time-share driven achieves both improvement of quality at an image edge, and maintenance of uniformity with respect to inclination error between print element arrays. In a case where the plurality of printing elements of the print element array that discharges ink having the highest density are driven, and dots of image data in the array direction of the printing elements are printed so that the dots are arranged along a specified line in the array direction of the printing elements. Whereas the plurality of printing elements of a different print element array are driven, and dots of the image data in the array direction of those printing elements are printed so that each dot is displaced by a displacement amount for the each dot with respect to the specified line. 1. A printing apparatus comprising:a plurality of print element arrays that comprise a plurality of printing elements that are arranged in arrays and that are used for discharging ink, the plurality of print element arrays being placed side by side in a direction cross to the direction of the arrays;a relative movement unit configured to cause the plurality of print element arrays and a print medium that faces the plurality of print element arrays to move relative to each other in the cross direction; anda drive unit configured to drive the plurality of printing elements of the plurality of print element arrays by time-divisional driving in which the drive timing differs for each specified number of printing elements in a specified drive sequence; whereinthe plurality of printing elements of a specified print element array from among the plurality of print element arrays that discharges a specified type of ink are arranged so as to take on relative displacement amounts in the cross direction according to a first drive sequence for the specified print element array in the time-divisional ...

Method for controlling actuators of an ink printing system

In the method for controlling actuators, corresponding actuators are controlled so that they eject the ink droplets for the print image. Corresponding actuators are additionally controlled in order to eject refresh droplets in the image background according to a random distribution. In the event that no image droplet is printed between two successive refresh droplets, the ink meniscus is set into vibration as a refresh measure between the refresh droplets.

ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS

An element substrate capable of suppressing occurrence of electromagnetic noise upon driving printing elements on an element substrate with long wiring lengths, preventing an operation error, and printing a high-quality image is provided. In the element substrate, plural element substrates each including printing elements are arrayed in an arrayed direction of the printing elements. Each element substrate including a wiring for supplying a driving power to drive the printing elements, and a ground wiring from the printing elements is configured as follows. Each element substrate includes a delay circuit for delaying a heat enable signal to drive the printing elements and supplying it to each printing element, and a switchover circuit for switching over, in accordance with a control signal, a delay sequence when supplying the heat enable signal to each printing element. 1. An element substrate including a plurality of printing elements configured to generate energy to be used to discharge liquid , a wiring configured to supply a driving power to be used to drive said plurality of printing elements , a ground wiring from said plurality of printing elements , and a delay circuit configured to delay a heat enable signal to be used to drive the printing element and supply the heat enable signal to each of said plurality of printing elements , comprising:a switchover circuit configured to switch over, in accordance with a control signal, a delay sequence in a case where supplying the heat enable signal to each of said plurality of printing elements by said delay circuit.2. The element substrate according to claim 1 , wherein said delay circuit includes:a first delay buffer group formed by series-connecting a plurality of buffer circuits in which the heat enable signal is transferred while being delayed by said plurality of buffer circuits;a second delay buffer group formed by series-connecting a plurality of buffer circuits in which the heat enable signal is transferred ...

PRINTING APPARATUS AND CONTROL METHOD THEREFOR

A method for inspecting an ink discharge status based on a temperature change of an energy generating element comprises: calculating a difference value between a value obtained by statistics of pieces of information indicating ink discharge statuses obtained for a plurality of nozzles close to a target nozzle and the information obtained for the target nozzle; comparing the calculated difference value with a predetermined threshold; and judging the ink discharge status for the target nozzle based on a result of the comparison. This enables to appropriately detect a nozzle which is in a discharge failure status due to an ink droplet adhered to a discharge surface of a printhead or the like. 1. A printing apparatus comprising:a printhead including a plurality of nozzles each configured to discharge ink, a plurality of energy generating elements respectively provided in the plurality of nozzles and each configured to generate energy used for discharging the ink from the nozzle, a plurality of detection elements provided in correspondence with the plurality of energy generating elements, and an output portion configured to output a signal indicating ink discharge statuses of the plurality of nozzles using the plurality of detection elements;an inspection unit configured to inspect the ink discharge status while changing a threshold for judging the discharge status of a target nozzle based on the signal output by the output portion;an obtaining unit configured to obtain, for the target nozzle, information concerning a change point at which a judgment result obtained by inspecting the ink discharge status by the inspection unit changes;a calculation unit configured to calculate a difference value between a value obtained by statistics of pieces of information obtained by the obtaining unit for a plurality of nozzles close to the target nozzle and the information obtained by the obtaining unit for the target nozzle;a first comparison unit configured to compare the ...

PRINTHEAD EMPLOYING DATA PACKETS INCLUDING ADDRESS DATA

A print component includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices each corresponding to a different address of a set of addresses. A buffer receives data packets each including address data representative of an address of the set of addresses and print data for each primitive, places the print data on the respective data line of the corresponding primitive, and directs the address data to address logic which encodes the address data onto the address line in the order of reception of the address data by the buffer via the data packets. For each primitive, the activation device corresponding to the address on the address line activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line. 1. A print component comprising:an address line;a set of data lines;a fire pulse line;a plurality of primitives, each primitive corresponding to a different data line of the set of data lines and including a plurality of activation devices addressed by a set of addresses, each activation device corresponding to a different address of the set of addresses and controllable to activate a corresponding primitive function; 'receive a series of data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive;', 'a buffer to direct the address data to address logic; and', 'place the print data on the respective data line of the corresponding primitive; and, 'for each data packet, the buffer to receive the address data from the buffer; and', 'encode the address represented by the address data onto the address line in the order of reception of the address data by the buffer via the data packets;, 'for each data packet, the address logic tofor each primitive, the activation device corresponding to the address ...

LIQUID DISCHARGE APPARATUS, LIQUID DISCHARGE METHOD, AND STORAGE MEDIUM

A liquid discharge apparatus includes liquid discharge units, a first image capturing unit, a second image capturing unit, a detection unit, and a discharge determination unit. The liquid discharge units include a first liquid discharge unit and a second liquid discharge unit downstream from the first discharge unit in a moving direction of a recording medium. The first capturing unit captures a first image of the medium at a position corresponding to the first discharge unit. The second capturing unit captures a second image of the medium at a position corresponding to the second discharge unit. The detection unit detects a movement amount of the medium in the moving direction, based on the first image and the second image. The discharge determination unit determines a discharge timing of the second discharge unit with respect to discharge of the first discharge unit, based on the movement amount and a clock signal. 1. A liquid discharge apparatus comprising:a plurality of liquid discharge units configured to discharge liquid to form an image on a recording medium, the plurality of liquid discharge units including: a first liquid discharge unit; and a second liquid discharge unit disposed downstream from the first liquid discharge unit in a moving direction of the recording medium;a first image capturing unit configured to capture a first image of the recording medium at a position corresponding to the first liquid discharge unit;a second image capturing unit configured to capture a second image of the recording medium at a position corresponding to the second liquid discharge unit; anda detection unit configured to detect a movement amount of the recording medium in the moving direction, based on the first image and the second image; anda discharge determination unit configured to determine a discharge timing of the second liquid discharge unit with respect to discharge of the first liquid discharge unit, based on the movement amount and a clock signal.2. The ...

PRINT ENGINE WITH CRADLE AND WIPER ARRANGEMENT

A print engine includes: a chassis; a cradle attached to the chassis, the cradle defining a longitudinal cavity having an access opening at a first end thereof; an elongate printhead received in the longitudinal cavity via the access opening; and a wiper carriage configured for longitudinally wiping the printhead. The wiper carriage is parked at a second end of the cradle opposite the first end. 2. The print engine of claim 1 , wherein the chassis comprises a lift mechanism for raising and lowering the cradle supporting the printhead.3. The print engine of claim 1 , wherein the wiper carriage is reciprocally movable longitudinally along the printhead towards and away from the first end.4. The print engine of claim 3 , further comprising a capper laterally extendible and retractable relative to the printhead.5. The print engine of claim 1 , wherein the cradle comprises an elongate printhead carrier positioned in the longitudinal cavity claim 1 , the printhead carrier being pivotable about a pivot axis at a second end of the cradle opposite the first end claim 1 , wherein the printhead is removable from the cradle via pivoting of the printhead carrier and longitudinally sliding the printhead relative to the printhead carrier through the access opening.6. The print engine of claim 5 , wherein the printhead carrier comprises a rail and the printhead comprises an overhead hanger slidably engaged with the rail.7. The print engine of claim 6 , wherein a first end of the printhead carrier comprises a slidable latch for latching engagement with the first end of the cradle.8. The print engine of claim 5 , wherein the access opening has one or more retaining features for retaining a first end of the printhead carrier in a raised position.9. The print engine of claim 5 , wherein the pivot axis is transverse to the longitudinal axis.10. The print engine of claim 1 , wherein a direction of printhead insertion through the access opening is opposite a wiping direction of the wiper ...

ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS

An element substrate capable of suppressing occurrence of electromagnetic noise upon driving printing elements on an element substrate with long wiring lengths, preventing an operation error, and printing a high-quality image is provided. In the element substrate, plural element substrates each including printing elements are arrayed in an arrayed direction of the printing elements. Each element substrate including a wiring for supplying a driving power to drive the printing elements, and a ground wiring from the printing elements is configured as follows. Each element substrate includes a delay circuit for delaying a heat enable signal to drive the printing elements and supplying it to each printing element, and a switchover circuit for switching over, in accordance with a control signal, a delay sequence when supplying the heat enable signal to each printing element. 1. An element substrate comprising:a plurality of printing elements configured to generate energy to be used to discharge liquid;a first delay buffer group formed by series-connecting a plurality of buffer circuits in which a heat enable signal to be used to drive the printing element is transferred while being delayed by the plurality of buffer circuits;a second delay buffer group formed by series-connecting a plurality of buffer circuits in which the heat enable signal is transferred while being delayed by the plurality of buffer circuits in a direction different from an arrayed direction of the plurality of buffer circuits of the first delay buffer group;a switchover circuit configured to switch over, in accordance with a control signal, a delay sequence in a case where supplying the heat enable signal to each of the plurality of printing elements by switching over between the first delay buffer group and the second delay buffer group.218.-. (canceled)19. The element substrate according to claim 1 , wherein a logic level of the control signal is inverted every time a predetermined time elapses ...

METHOD OF EJECTING INK DROPLETS HAVING VARIABLE DROPLET VOLUMES

A method of ejecting an ink droplet from an inkjet nozzle device having an actuator and a meniscus pinned across a nozzle opening. The method includes the steps of: delivering a sub-ejection pulse to the actuator for perturbing the meniscus from a quiescent state; and subsequently delivering an ejection pulse to the actuator at an instant when the meniscus is perturbed from its quiescent state, the ejection pulse ejecting the ink droplet from the nozzle opening. A time period between a trailing edge of the sub-ejection pulse and a leading edge of the ejection pulse controls a droplet volume of the ejected ink droplet. 2. The method of claim 1 , wherein the sub-ejection pulse and the ejection pulse together define a pulse package claim 1 , each pulse package having a predetermined time period and an associated droplet volume.3. The method of claim 2 , wherein each pulse package consists of a single sub-ejection pulse and a single ejection pulse.4. The method of claim 1 , wherein the meniscus is a concave meniscus in its quiescent state.5. The method of claim 4 , wherein the sub-ejection pulse inverts the concave meniscus into a convex meniscus claim 4 , the convex meniscus providing relatively higher droplet volumes.6. The method of claim 4 , wherein the sub-ejection pulse increases the curvature of the concave meniscus claim 4 , the increased curvature providing relatively lower droplet volumes.7. The method of claim 1 , wherein a relatively shorter time period produces a relatively larger droplet volume claim 1 , and a relatively longer time period produces a relatively smaller droplet volume.8. The method of claim 7 , wherein relatively larger and relatively smaller droplet volumes are generated by a same amount of energy delivered to the actuator.9. The method of claim 8 , wherein a time period in the range of 0.1 to 2 microseconds produces a larger droplet volume relative to a corresponding ejection pulse without a preceding sub-ejection pulse.10. The method of ...

PRINT COMPONENT HAVING FLUIDIC ACTUATING STRUCTURES WITH DIFFERENT FLUIDIC ARCHITECTURES

A print component includes an array of fluidic actuation structures including a first column of fluidic actuating structures addressable by a set of actuation addresses, each fluidic actuating structure having a different one of the actuation addresses and having a fluidic architecture type, and a second column of fluidic actuating structures addressable by the set of actuation addresses. Each fluidic actuating structure of the second column has a different one of the actuation addresses and has a same fluidic architecture type as the fluidic actuating structure of the first column having the same address. An address bus communicates the set of addresses to the array of fluidic actuating structures, and a fire signal line communicates a plurality of fire pulse signal types to the array of fluidic actuating structures, the fire pulse signal type depending on the actuation address on the address bus. 119-. (canceled)20. A print component , comprising: a first column of fluidic actuating structures addressable by a set of actuation addresses, each fluidic actuating structure having a different one of the actuation addresses and having a fluidic architecture type; and', 'a second column of fluidic actuating structures addressable by the set of actuation addresses, each fluidic actuating structure of the second column having a different one of the actuation addresses and having a same fluidic architecture type as the fluidic actuating structure of the first column having the same address;, 'an array of fluidic actuation structures includingan address bus to communicate the set of addresses to the array of fluidic actuating structures; anda fire signal line to communicate a plurality of fire pulse signal types to the array of fluidic actuating structures, the fire pulse signal type depending on the actuation address on the address bus.21. The print component of claim 20 , each fluidic actuating structure comprising a number of features of a group of features including a ...

PRINTHEAD SUBSTRATE AND PRINTING APPARATUS

A printhead substrate, comprising an electrothermal transducer configured to heat a printing material, a first DMOS transistor configured to drive the electrothermal transducer, a MOS structure forming an anti-fuse element, a second DMOS transistor configured to write information in the anti-fuse element by causing an insulation breakdown of an insulating film of the MOS structure, and a driving unit consisted of at least one MOS transistor and configured to drive the second DMOS transistor. 16-. (canceled)7. A printhead substrate comprising:an electrothermal transducer configured to heat a printing material;a first transistor configured to drive the electrothermal transducer;a metal oxide semiconductor structure forming an anti-fuse element;a second transistor connected to the metal oxide semiconductor structure, and configured to break down a gate insulating film of the metal oxide semiconductor structure; anda driving unit, including at least one metal oxide semiconductor transistor, configured to drive the second transistor,wherein a breakdown voltage of each of the first transistor and the second transistor is higher than a breakdown voltage of the at least one metal oxide semiconductor transistor.8. The substrate according to claim 7 , wherein a thickness of a gate insulating film of the first transistor claim 7 , a thickness of a gate insulating film of the second transistor claim 7 , and a thickness of the gate insulating film of the metal oxide semiconductor structure are equal to each other.9. The substrate according to claim 7 , wherein a depth of a impurity region claim 7 , in which a channel region is formed claim 7 , of the first transistor and a depth of a impurity region claim 7 , in which a channel region is formed claim 7 , of the second transistor are equal to each other claim 7 , andwherein an impurity concentration of the impurity region of the first transistor and an impurity concentration of the impurity region of the second transistor are ...

Fault tolerant printhead

In one example, a fault-tolerant printhead includes an array of fluid actuators. Each fluid actuator includes a fault sensor to detect a faulted fluid actuator and a per-fluid actuator memory to store a fault sensor state of the fluid actuator. The fault-tolerant printhead also includes an interface to read a state of each per-fluid actuator memory.

Printhead with flexible substrate

In one example in accordance with the present disclosure a flexible printhead is described. The printhead includes a number of printhead die, a printhead die including a number of nozzles to deposit an amount of fluid onto a print medium. The printhead also includes a fluid delivery system to deliver the amount of fluid from a fluid supply to the number of nozzles. The printhead also includes a number of electrical circuits to electronically couple the number of printhead die with a printing device. The printhead also includes a flexible substrate on which the number of printhead die and the number of electrical circuits are mounted.

CALIBRATING A MEDIA ADVANCE SYSTEM OF A PAGE WIDE ARRAY PRINTING DEVICE

A method of determining calibration values for a media advance system of a page wide array printing device is described. A test pattern is printed on a calibration medium which advances along a media axis through the printing device. The test pattern comprises a plurality of test marks. The test pattern is scanned along a scan axis using a sensor and the calibration medium is advanced along the media axis through the printing device. The dimensions of the scanned test marks are analyzed, and calibration values are determined from the analyzed dimensions of the test marks. The scan axis is orthogonal to the media axis. 1. A method of determining calibration values for a media advance system of a page wide array printing device comprisingprinting a test pattern comprising a plurality of test marks on a calibration medium which advances along a media axis through the printing device,scanning the test pattern along a scan axis using a sensor and advancing the calibration medium along the media axis through the printing device,analyzing the dimensions of the scanned test marks, anddetermining calibration values from the analyzed dimensions of the test marks,wherein the scan axis is orthogonal to the media axis.2. The method according to claim 1 , wherein the page wide array printing device comprises at least one print head having at least two different rows of dies and wherein printing the test pattern on the calibration medium comprises printing at least two columns of test marks on the calibration medium claim 1 , said columns being aligned with the media axis claim 1 , wherein at least one die of each of the different rows of dies prints at least one column of test marks on the calibration medium.3. The method according to claim 2 , wherein the at least two columns of test marks are printed on the calibration medium such that a plurality of rows of test marks is formed on the calibration medium claim 2 , said rows being spaced apart from each other along the media ...

Image processing apparatus, image processing method, and image processing system

An image processing apparatus includes an acquiring unit, a first calculating unit, a setting unit, a second calculating unit, a first generating unit, and a second generating unit. The acquiring unit acquires image data of an image to be formed by a recording unit using an inkjet system. The first calculating unit calculates a thickness of ejected ink for each pixel based on the image data. The setting unit sets a target thickness of the image. The second calculating unit calculates a difference between the target thickness and the thickness of ink for each pixel. The first generating unit generates complementary data, in which an ejection amount of an additional droplet to realize a thickness corresponding to the difference is defined for each pixel. The second generating unit generates print data containing the image data and the complementary data.

MULTILAYER STRUCTURED ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS

According to one embodiment, a size of an element substrate is reduced, and a printhead using the element substrate can print high-quality image. The multilayer structured element substrate comprises a plurality of print elements, and a circuit configured to input a data signal and a clock signal used for driving the plurality of print elements. And, a print element array formed by arranging the plurality of print elements in line is diagonally arranged with respect to a side constituting an outer shape of the element substrate. A print element at one end of the print element array is a dummy element not contributing to printing. The circuit is provided not only at the same position as that of the dummy element but also in a layer different from that of the dummy element. 1. A multilayer structured element substrate comprising:an element array in which a plurality of print elements are arranged and a dummy element not contributing to printing is included; anda first circuit related to driving the plurality of print elements forming the element array,wherein the dummy element and the first circuit are arranged at a position where the dummy element and the first circuit at least partially overlap each other in a planar view of the element substrate.2. The element substrate according to claim 1 , wherein the dummy element is arranged at an end of the element array.3. The element substrate according to claim 1 , further comprising a plurality of second circuits configured to drive the plurality of print elements claim 1 , respectively claim 1 ,wherein the first circuit supplies a data signal and a clock signal to be used by the plurality of second circuits to drive the plurality of print elements.4. The element substrate according to claim 3 , wherein each of the plurality of the second circuits includes a MOS transistor and a selection circuit configured to select the MOS transistor.5. The element substrate according to claim 4 , wherein the MOS transistor and the ...

PRINTHEAD EMPLOYING DATA PACKETS INCLUDING ADDRESS DATA

A printhead includes an address line, data lines, a fire pulse line, and a plurality of primitives, each primitive corresponding to a different data line and including a plurality of activation devices, each activation device corresponding to a different address of a set of addresses. A buffer receives data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive corresponding to the address. For each data packet, the buffer directs the address data to address logic and places the print data on the respective data line, and the address logic encodes the address represented by the address data onto the address line. For each primitive, the activation device corresponding to the address on the address bus activates a corresponding primitive function based on the corresponding print data when a fire pulse is present on the fire pulse line. 1. A printhead comprising:an address line to communicate a set of addresses;a number of activation devices arranged to form a number of primitives, for each primitive, the activation devices addressable by the set of addresses via the address line with each activation device corresponding to a different address of the set of addresses;a set of data lines, each data line of the set of data lines corresponding to a different one of the primitives; and receive data packets, each data packet including address data representative of an address of the set of addresses and print data for each primitive;', 'place the print data for each primitive on the corresponding data line; and', 'encode the address represented by the address data onto the address line., 'control logic to2. The printhead of claim 1 , the control logic to encode addresses on the address line in an order in which the address data is received via the data packets such that some addresses of the set of addresses may be encoded onto the address line more frequently than other addresses of the set ...

Printhead employing data packets including address data

A printhead including an address line for communicating a set of addresses and a number of primitives, each primitive including a plurality of controllable activation devices coupled to the address line, each switch corresponding to at least one address of the set of addresses, each address corresponding to one of a number of primitive functions. A buffer receives a series of data packets, each data packet including address bits representative of one address of the set of addresses. Address logic receives the address bits PULSE POWER GROUND from the buffer, wherein for each data packet the address logic encodes the address represented by the address bits onto the address line, and wherein the at least one switch corresponding to the address activates the primitive function corresponding to address.

METHOD FOR INKJET PRINTING

A method for printing on sheets in an inkjet process using nozzles includes transporting the sheets on a drum. When the nozzles are actuated by a computer, banding defects are compensated for and the computer factors in or takes into consideration thermal properties of the drum as it actuates the nozzles. 1. An inkjet printing method for printing on sheets using nozzles , the method comprising:transporting the sheets on a drum;using a computer to actuate the nozzles while compensated for banding defects; andtaking thermal properties of the drum into consideration as the computer actuates the nozzles.2. The method according to claim 1 , wherein the thermal properties include local thermal conductivity differences between contacting surfaces of the drum for carrying the sheets and air-filled clearances located between the contact surfaces.3. The method according to claim 2 , which further comprises:providing the drum with a first comb segment and a second comb segment;providing the comb segments with segment teeth forming the contacting surfaces; andtransporting every sheet on the first and second comb segments with a front section of a respective sheet resting on the first comb segment and a rear section of the same respective sheet resting on the second comb segment.4. The method according to claim 3 , which further comprises during a format adjustment made prior to a printing process on the drum claim 3 , incompletely inserting the segment teeth of a respective one of the comb segments into teeth gaps of the other of the comb segments claim 3 , forming the clearances.5. The method according to claim 4 , which further comprises taking a first optical measurement in the front section of a respective sheet and taking a second optical measurement in the rear section of the same respective sheet or of another sheet.6. The method according to claim 5 , which further comprises:using the nozzles to print a first measurement field onto the front section and a second ...

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

In a case in which a difference between a total value of numbers of ink discharge times for a target divided region and a representative value of the numbers of ink discharge times for a plurality of divided regions adjacent to the target divided region is large, the total value of the numbers of ink discharge times for the target divided region is reduced. 1. An image processing apparatus for generating recording data to be used in each of a plurality of times of relative scanning of a recording head including a discharge port array in which discharge ports for discharging ink are arrayed in a predetermined direction , with respect to a unit region on a recording medium , in a crossing direction intersecting with the predetermined direction , the recording data defining ink discharge or non-discharge for each of a plurality of pixel regions corresponding to a plurality of pixels in the unit region , the image processing apparatus comprising:a first acquisition unit configured to acquire image data in which information about a number of ink discharge times from 0 to N (N≧2) for each of the plurality of pixel regions is defined for each pixel;a second acquisition unit configured to acquire, for each of a plurality of divided regions being obtained by dividing the unit region in the predetermined direction and the crossing direction and each including a plurality of pixel regions, information about a total value of respective numbers of ink discharge times for the plurality of pixel regions in each of the divided regions based on the image data acquired by the first acquisition unit;a third acquisition unit configured to acquire, based on pieces of information about the respective total values for a plurality of divided regions adjacent to a target divided region, among pieces of information about the respective total values for the plurality of divided regions that have been acquired by the second acquisition unit, information about a representative value of numbers ...

BASE, LIQUID DISCHARGE HEAD, PRINTING APPARATUS, AND METHOD FOR DETERMINING LIQUID DISCHARGE STATUS

An embodiment of this invention is directed to determining a discharge status of liquid discharged from a liquid discharge head capable of accurately determining the discharge status of each nozzle at high speed with a simple arrangement. According to the embodiment, a base includes an electrothermal transducer configured to supply heat to liquid, a first temperature detection element configured to detect the temperature of the electrothermal transducer, and a second temperature detection element configured to detect the temperature of the same electrothermal transducer. In this case, the first and the second temperature detection elements are arranged so that at least part of each of the first and second temperature detection elements is included immediately above or below a region where the electrothermal transducer is arranged in the base. 1. A base comprising:an electrothermal transducer configured to supply heat to liquid;a first temperature detection element configured to detect a temperature of the electrothermal transducer; anda second temperature detection element configured to detect a temperature of the electrothermal transducer,wherein the first temperature detection element and the second temperature detection element are arranged so that at least part of each of the first temperature detection element and the second temperature detection element is included immediately above or below a region where the electrothermal transducer is arranged in the base.2. The base according to claim 1 , whereina plurality of the electrothermal transducers are provided, anda plurality of the first temperature detection elements and a plurality of the second temperature detection elements are provided in accordance with the plurality of electrothermal transducers, respectively.3. The base according to claim 1 , whereinthe base has a multilayer structure, anda layer in which the electrothermal transducer is formed is different from a layer in which the first temperature ...

IMAGE FORMING APPARATUS AND CONTROL METHOD OF IMAGE FORMING APPARATUS

An image forming apparatus 101 capable of performing printing with a high image quality, and a control method of the image forming apparatus 101 are provided. For this purpose, a threshold value Dt is preliminarily set that allows printing without occurrence of blur, for each of preliminarily set monitoring areas A. In the case where a print duty for each of the monitoring areas A has exceeded the threshold value Dt, an ejection frequency of ink and conveying speed of a print medium are reduced in association therebetween. 1. An image forming apparatus comprising:an ejection head including a plurality of ejection ports configured to eject liquid;a flow path for supplying liquid to the plurality of ejection ports; anda control unit configured to control the amount of liquid to be ejected from the ejection ports, whereina plurality of areas including the ejection ports in the ejection head are set, in accordance with a degree of pressure loss in the flow path,a threshold value, associated with each of the plurality of areas, is set to the amount of ejection per unit time from the ejection ports provided in the areas, andthe control unit controls the amount of liquid ejected per unit time to be equal to or smaller than the threshold value for each of the areas.2. The image forming apparatus according to claim 1 , whereinthe control unit performs control so that the amount of liquid to be ejected per unit time from the ejection port provided on the area is equal to or smaller than the threshold value, in a case where, as a result of comparing the amount of liquid to be ejected from the ejection port provided on the area with the threshold value, the amount of liquid to be ejected from the ejection port is larger than the threshold value.3. The image forming apparatus according to claim 1 , whereinthe control unit performs control so that the amount of liquid to be ejected per unit time becomes equal to or smaller than the threshold value by reducing an ejection ...

RECORDING APPARATUS AND RECORDING METHOD

A recording apparatus includes a recording head including a plurality of ink discharge ports arranged in a predetermined direction, and a complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, wherein the complementing unit determines to use a discharge port configured to provide the ink at a position on one side that is one of positions adjacent in the predetermined direction to a position at which the at least one discharge port provides the ink as the different discharge port for the discharge port identified as the defective discharge port. 1. A recording apparatus comprising:a recording head including a plurality of ink discharge ports arranged in a predetermined direction;a determination unit configured to, according to tone data indicating a tone of an image to be formed on a recording medium, determine whether or not to provide ink at a position corresponding to each of pixels forming the image on the recording medium; anda complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, the recording apparatus controlling a recording operation so as to move the recording head and the recording medium relative to each other in a direction intersecting the predetermined direction and provide the ink from the recording head onto the recording medium according to the determination made by the ...

SYSTEM FOR DETECTING INOPERATIVE INKJETS IN PRINTHEADS EJECTING CLEAR INK USING THERMAL SUBSTRATES

An apparatus detects inoperative inkjets during printing. The apparatus operates the printhead or printheads in the printer to form test pattern on a thermal substrate. The heat of the materials used to form the test pattern change the optical density of the areas where the materials land. The area where the test pattern is formed is imaged and the image data are analyzed to identify inoperative inkjets. 1. A printer comprising:a printhead configured with a plurality of inkjets to eject material;a supply of thermal substrate having a surface with a thermal sensitive dye, the supply of thermal substrate being configured to move thermal substrate to a position opposite the printhead to receive material ejected from the printhead;an optical sensor configured to generate electrical signals corresponding to an optical density of a location on the thermal substrate;an actuator operatively connected to the optical sensor to move the optical sensor to a position opposite the thermal substrate onto which material has been ejected; anda controller operatively connected to the actuator, the optical sensor, and the printhead, the controller being configured to operate the printhead to eject a predetermined number of material drops from each inkjet onto the surface of the thermal substrate having the thermal sensitive dye to enable the predetermined number of material drops to change a color of one or more portions of the thermal substrate and form a test dot for each inkjet on the thermal substrate, to operate the actuator to the optical sensor to a position opposite the thermal substrate, and to identify inoperative inkjets in the printhead with reference to the data received from the optical sensor that corresponds to optical densities of the thermal substrate at a plurality of locations on the thermal substrate.2. The printer of claim 1 , the supply of thermal substrate further comprising:a plurality of thermal substrates, each substrate having the surface with the thermal ...

LIQUID DISCHARGING APPARATUS AND HEATING UNIT CONTROL METHOD

A liquid discharging apparatus includes a discharge unit that is capable of discharging a liquid, a heating unit that is capable of heating a medium onto which the liquid is discharged, a detection unit that detects an energy that is emitted from a detection range, a control unit that is capable of changing an output of the heating unit on the basis of an energy that the detection unit detects, and a sensing target portion, which has a sensing target surface from which an energy is detected by the detection unit, and the sensing target surface is processed in order to reduce mirror reflection of input light. 1. A liquid discharging apparatus comprising:a discharge unit that is capable of discharging a liquid;a heating unit that is capable of heating a medium onto which the liquid is discharged;a detection unit that detects an energy that is emitted from a detection range;a control unit that is capable of changing an output of the heating unit on the basis of an energy that the detection unit detects; anda sensing target portion, which has a sensing target surface from which an energy is detected by the detection unit,wherein the sensing target surface is processed in order to reduce mirror reflection of input light.2. The liquid discharging apparatus according to claim 1 ,wherein the sensing target surface is processed so as to have first portions, and second portions that are lower than the first portions.31. The liquid discharging apparatus according to claim claim 1 ,wherein surface processing is carried out on at least a portion of the sensing target surface.4. The liquid discharging apparatus according to claim 3 ,wherein at least a portion of the sensing target surface is made of an aluminum on which alumite processing has been performed.5. The liquid discharging apparatus according to claim 1 ,wherein a radiation rate of the sensing target portion is greater than or equal to 0.7 and less than 1.6. The liquid discharging apparatus according to claim 1 , ...

INK JET PRINTING APPARATUS, INK JET PRINTING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

First heating is started at a first time point, and a second heating having higher heating energy than the first heating is started at a second time point subsequent to the first time point. 1. An inkjet printing apparatus comprising:a printing head including a substrate including at least a printing element array in which a plurality of printing elements for generating thermal energy used to eject ink from ejection ports are arranged in a predetermined direction and a heating element for heating ink near the printing elements, the heating element being provided near at least one end portion of the printing element array in the predetermined direction;a heating control unit that causes execution of first heating that heats ink near the printing elements by causing the heating element to generate a first amount of thermal energy per unit time by driving the heating element and execution of second heating that heats ink near the printing elements by causing the printing elements to generate a second amount of thermal energy per unit time larger than the first amount by driving the printing elements to an extent insufficient to cause ink to be ejected from the ejection ports; anda printing control unit that performs control in such a manner that ink ejection from the printing head is started when a temperature of ink near the printing elements reaches a predetermined temperature as a result of the first and second heating caused by the heating control unit,wherein the heating control unit starts driving the heating element at a first time point and starts driving the printing elements at a second time point subsequent to the first time point.2. The inkjet printing apparatus according to claim 1 , wherein the heating element is provided in such a manner as to cover at least one side of the printing element array in a crossing direction which crosses the predetermined direction of the printing element array.3. The inkjet printing apparatus according to claim 2 , wherein ...

TEMPERATURE-BASED ACTUATOR EVALUATION

In one example in accordance with the present disclosure, a fluidic system is described. The fluidic system includes a fluidic die. The fluidic die includes a substrate in which a number of fluid chambers are formed. Each fluid chamber includes a fluid actuator disposed within the fluid chamber. A number of actuator sensors are disposed on the substrate to output at least one value indicative of a sensed characteristic of fluid actuators. A number of substrate temperature sensors are also disposed on the substrate to sense a temperature for the substrate. An actuator evaluation device of the fluidic system determines a state of the fluid actuator based at least in part on the at least one value and at least one correction value associated with the temperature sensed by the number of substrate temperature sensors. 1. A fluidic system , comprising: a substrate in which a number of fluid chambers are formed, wherein each fluid chamber comprises a fluid actuator disposed within the fluid chamber; and', 'a number of actuator sensors disposed on the substrate to output at least one value indicative of a sensed characteristic of a fluid actuator;', 'a number of substrate temperature sensors disposed on the substrate to sense a temperature for the substrate; and, 'a fluidic die comprisingan actuator evaluation device to determine a state of the fluid actuator based at least in part on the at least one value and at least one correction value associated with the temperature sensed by the number of substrate temperature sensors.2. The fluidic system of claim 1 , wherein:the fluid chamber is an ejection chamber; andthe fluid actuator is an ejector to eject fluid through an opening in the ejection chamber.3. The fluidic system of claim 1 , wherein the number of substrate temperature sensors is the same as the number of fluid chambers.4. The fluidic system of claim 1 , wherein the number of substrate temperature sensors is less than the number of fluid chambers.5. The fluidic ...

Control logic for an inkjet printhead

Control logic for an inkjet printhead having a plurality of inkjet nozzles is disclosed. Each inkjet nozzle has an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. For each nozzle the control logic includes a shift register comprising a plurality of successive registers, the shift register receives input data in a first register, and shifts the input data to successive registers upon receipt of a shift signal, a transfer register for latching data in one of the registers of the shift register; a control gate for outputting a control pulse in response to data in the transfer register, and a drive transistor for providing an energy pulse to the resistive element of the actuator upon receipt of the control pulse. The control logic includes at least 2000 shift registers, 2000 transfer registers, 2000 control gates and 2000 drive transistors on a single silicon integrated circuit.

Printhead cartridge cradle having control circuitry

A printhead cartridge cradle is provided having a frame, a printed circuit board pivotally supported by the frame, a cover pivotally supported by the frame to pivot between a closed position at which a printhead cartridge is secured within the frame and the printed circuit board is pivoted to connect control circuitry on the printed circuit board with a controller of the secured cartridge and an open position at which access for the cartridge with the frame is provided and the printed circuit board is pivoted to disconnect the control circuitry and controller, and a motor operatively connected to a maintenance gear and actuator arrangement and a wiper gear and actuator arrangement for maintaining and wiping a printhead of the secured cartridge under control of the connected control circuitry.

Print cartrdge cradle unit incorporating maintenance assembly

A cradle unit for receiving a print cartridge to form a print engine, the cradle unit includes a main body defining an opening for receiving said cartridge, the main body having a frame structure including end plates with drive and exit rollers mounted therebetween; a printed circuit board (PCB) pivotally mounted between the end plates for housing control electronics for controlling the operation of the print engine; a cover assembly for securing said cartridge in the opening, the cover assembly pivotally mounted between the end plates, the cover assembly configured to pivot the PCB into electrical contact with a printhead controller on the cartridge when in a closed position, and to pivot the PCB out of electrical connection with said printhead controller when in an open position; and a maintenance assembly mounted to the main body, the maintenance assembly movable between a capping state where a printhead of the print cartridge is capped, and a printing stage where a printhead of the print cartridge is uncapped.

Reservoir assembly for supplying fluid to printhead

A fluid reservoir assembly for supplying fluid to a printhead is provided. The assembly has a reservoir compartment in fluid communication with fluid channels for supplying the fluid to the printhead via a fluid outlet, the reservoir compartment having an air vent and a bypass fluid path interconnecting the fluid outlet and a well region within the compartment, and a valve in the bypass fluid path for priming the reservoir compartment with fluid via the bypass fluid path.

Pagewidth printhead assembly with ink and data distribution

A pagewidth printhead assembly for an inkjet printer, that has an elongate ink distribution member mounted with a series of inlets spaced along the length of the elongate ink distribution member, one or more integrated circuits fixed to the ink distribution member, the or each integrated circuit having nozzles for ejecting ink supplied by the distribution member onto a passing media substrate, and an electrical connector for transmitting data to the or each integrated circuit, the electrical connector having an elongate array of contacts for electrical connection with a corresponding array of contacts on the inkjet printer.

Printer print engine with cradled cartridge unit

A print engine for a printer unit includes a cradle unit including a print engine controller provided on flex printed circuit board, and a cover assembly for covering a recess defined by the cradle; a replaceable cartridge unit received within the recess of the cradle unit in a releasable manner, the replaceable cartridge having a body, an ink storage module assembly, and a pagewidth printhead assembly; and a print media transport means for transporting print media. The ink storage module assembly includes a plurality of ink storage modules received in the body from a first side, and the pagewidth printhead assembly is mounted to the body at a second side opposite the first side. The cover assembly is engaged with the flex printed circuit board to pivot the flex printed circuit board in and out of electrical engagement with the pagewidth printhead assembly upon closing and opening of the cover assembly with respect to the recess.

Printer print engine with cradled cartridge unit

A print engine for a printer unit includes a cradle unit including a print engine controller provided on flex printed circuit board, and a cover assembly for covering a recess defined by the cradle; a replaceable cartridge unit received within the recess of the cradle unit in a releasable manner, the replaceable cartridge having a body, an ink storage module assembly, and a pagewidth printhead assembly; and a print media transport means for transporting print media. The ink storage module assembly includes a plurality of ink storage modules received in the body from a first side, and the pagewidth printhead assembly is mounted to the body at a second side opposite the first side. The cover assembly is engaged with the flex printed circuit board to pivot the flex printed circuit board in and out of electrical engagement with the pagewidth printhead assembly upon closing and opening of the cover assembly with respect to the recess.

Inkjet print engine having printer cartridge incorporating maintenance assembly and cradle unit incorporating maintenance drive assembly

An inkjet print engine includes a printer cartridge having an elongate body and a pair of mounting posts provided at either end of the elongate body, the printer cartridge further and defining a plurality of partitions; an ink storage module assembly having a row of ink storage modules interleaved with the partitions; a printhead assembly mounted to the elongate body and including at least one ink ejection integrated circuit (IC) connected to receive ink from the ink storage modules; an elongate maintenance assembly mounted between the posts and configured to cap and clean the IC; a cradle unit for removably receiving the printer cartridge; and a maintenance drive assembly mounted to the cradle unit for actuating against the maintenance assembly to facilitate cleaning of the IC.

Pagewidth printhead assembly with ink and data distribution

A pagewidth printhead assembly for an inkjet printer, that has an elongate ink distribution member mounted with a series of inlets spaced along the length of the elongate ink distribution member, one or more integrated circuits fixed to the ink distribution member, the or each integrated circuit having nozzles for ejecting ink supplied by the distribution member onto a passing media substrate, and an electrical connector for transmitting data to the or each integrated circuit, the electrical connector having an elongate array of contacts for electrical connection with a corresponding array of contacts on the inkjet printer.

Printhead cartridge cradle having control circuitry

A printhead cartridge cradle is provided having a frame, a printed circuit board pivotally supported by the frame, a cover pivotally supported by the frame to pivot between a closed position at which a printhead cartridge is secured within the frame and the printed circuit board is pivoted to connect control circuitry on the printed circuit board with a controller of the secured cartridge and an open position at which access for the cartridge with the frame is provided and the printed circuit board is pivoted to disconnect the control circuitry and controller, and a motor operatively connected to a maintenance gear and actuator arrangement and a wiper gear and actuator arrangement for maintaining and wiping a printhead of the secured cartridge under control of the connected control circuitry.

Reservoir assembly for supplying fluid to printhead

A fluid reservoir assembly for supplying fluid to a printhead is provided. The assembly has a reservoir compartment in fluid communication with fluid channels for supplying the fluid to the printhead via a fluid outlet, the reservoir compartment having an air vent and a bypass fluid path interconnecting the fluid outlet and a well region within the compartment, and a valve in the bypass fluid path for priming the reservoir compartment with fluid via the bypass fluid path.

Print cartrdge cradle unit incorporating maintenance assembly

A cradle unit for receiving a print cartridge to form a print engine, the cradle unit includes a main body defining an opening for receiving said cartridge, the main body having a frame structure including end plates with drive and exit rollers mounted therebetween; a printed circuit board (PCB) pivotally mounted between the end plates for housing control electronics for controlling the operation of the print engine; a cover assembly for securing said cartridge in the opening, the cover assembly pivotally mounted between the end plates, the cover assembly configured to pivot the PCB into electrical contact with a printhead controller on the cartridge when in a closed position, and to pivot the PCB out of electrical connection with said printhead controller when in an open position; and a maintenance assembly mounted to the main body, the maintenance assembly movable between a capping state where a printhead of the print cartridge is capped, and a printing stage where a printhead of the print cartridge is uncapped.

Network Inkjet Printer Having Multiple Media Input Trays

본체(2); 인쇄를 위한 한 장 또는 그 이상의 매체를 공급하기 적어도 하나의 매체입력트레이(4); 한 장의 매체 상에 이미지를 인쇄하기 위한 것으로, 제거가능한 페이지폭 잉크젯 프린트헤드를 포함하는 프린트 엔진(3); 및 인쇄를 위한 한 장의 매체를 적어도 하나의 매체입력조립체로부터 프린트 엔진으로 전달하기 위한 전달통로; 를 포함하며, 상기 본체(2)의 베이스는 인쇄를 위한 한 장 또는 그 이상의 매체를 공급하기 위한 적어도 하나의 보조 매체입력트레이를 수용하도록 구성되며, 상기 보조 매체입력트레이로부터 한 장의 매체를 수용하여 상기 전달통로를 경유하여 프린트 엔진으로 전달하기 위하여 상기 베이스에 개구가 설치되어 있는 네트워크 환경용 잉크젯 프린터. Main body 2; At least one media input tray 4 for supplying one or more media for printing; A print engine 3 for printing an image on a piece of media, the print engine comprising a removable pagewidth inkjet printhead; And a delivery passage for delivering one piece of media for printing from the at least one media input assembly to the print engine; The base of the main body 2 is configured to receive at least one auxiliary media input tray for supplying one or more media for printing, and to receive one sheet of media from the auxiliary media input tray. An inkjet printer for a network environment having an opening provided in the base for delivery to a print engine via the delivery passage.

음압화된 잉크 저장부를 갖는 카트리지 유닛

프린트헤드(22)에 연결되는 잉크 이송 시스템(30) 및 잉크 저장 구획(46)을 갖춘, 잉크젯 프린터용 카트리지 유닛(10). 잉크 저장 구획은 이동성 벽 섹션(48)을 가짐으로써 그 변화가능한 저장 부피가 변화가능하다. 이동성 벽(48)은 확장되는 변화가능한 저장 부피 방향으로 바이어스(54)되어, 잉크 저장 부피(46) 내에 음압이 생기며, 그 결과 잉크는 잉크 분사 노즐들로부터 우연히 누출되지 않는다. 음압이 없다면, 잉크 메니스커스는 노즐들로부터 부풀 수 있다. 메니스커스는 노즐 틈의 모서리에 자신을 고정시키며, 잉크 누출을 막을 수 있을 정도로 튼튼할 수 있다. 그러나, 결국 종이 먼지 또는 다른 오염물질들이 부푼 메니스커스가 노즐 림에 자신을 고정할 수 없게 하고, 누출이 발생하게 될 것이다. 잉크 저장 부피 내의 음압은 메니스커스가 노즐 틈 내로 반대로 돌이키도록 한다. 메니스커스가 노즐로부터 부풀지 않으면, 노즐 표면상의 종이 먼지는 누출을 일으키는 표면장력을 깨지 않는다.

Method for fabricating actuator for ink jet printer head using hydrophilic shape memory alloy

본 발명은 실리콘기판을 제공하는 단계와; 상기 실리콘기판의 상부에 절연막을 형성하는 단계와; 상기 절연막의 상부에 형상기억합금층을 형성하는 단계와; 상기 형상기억합금층을 열처리하고 냉각하는 공정을 반복함으로써 형상기억합금층에 형상기억특성을 부여하는 단계와; 상기 형상기억합금층의 상부에 친수성 폴리머의 박막을 형성하는 단계와; 상기 실리콘기판을 에칭하여 하부공간부를 형성하는 단계;를 포함하는 친수처리된 형상기억합금을 이용한 잉크젯 프린터 헤드용 액츄에이터의 제조방법에 관한 것으로, 챔버 내에 기포가 발생하는 것을 방지하고 형상기억합금층과 잉크와의 반응에 의한 찌꺼기형성현상을 없앨 수 있으며, 형상기억합금층의 기계적 특성이 향상되고 피로현상을 최소화할 수 있어 형상기억합금층의 장기안정성이 개선되는 효과가 있다. The present invention comprises the steps of providing a silicon substrate; Forming an insulating film on the silicon substrate; Forming a shape memory alloy layer on the insulating film; Providing shape memory characteristics to the shape memory alloy layer by repeating the heat treatment and cooling of the shape memory alloy layer; Forming a thin film of a hydrophilic polymer on top of the shape memory alloy layer; Forming a lower space by etching the silicon substrate; and a method of manufacturing an actuator for an inkjet printer head using a hydrophilic shape memory alloy, the method comprising: preventing a bubble from occurring in a chamber and forming a shape memory alloy layer; Residue formation by reaction with the ink can be eliminated, the mechanical properties of the shape memory alloy layer can be improved and the fatigue phenomenon can be minimized, thereby improving the long-term stability of the shape memory alloy layer.

소자 기판, 인쇄 헤드 및 인쇄 장치

긴 배선 길이를 갖는 소자 기판에 있어서의 인쇄 소자 구동 시의 전자 노이즈의 발생을 억제하고, 오동작을 방지하며, 고품질 화상 인쇄가 가능한 소자 기판이 제공된다. 소자 기판에서는, 인쇄 소자를 각각 포함하는 복수의 소자 기판이 인쇄 소자의 배열 방향으로 배열된다. 인쇄 소자를 구동하기 위한 구동 전원을 공급하는 배선과, 인쇄 소자로부터의 접지 배선을 포함하는 각 소자 기판은, 이하와 같이 구성된다. 각 소자 기판은, 인쇄 소자를 구동하기 위한 히트 인에이블 신호를 각 인쇄 소자에 지연시켜서 공급하는 지연 회로와, 히트 인에이블 신호를 각 인쇄 소자에 공급하는 경우의 지연 시퀀스를, 제어 신호를 따라 전환하는 전환 회로를 포함한다.

소자 기판, 인쇄 헤드 및 인쇄 장치

긴 배선 길이를 갖는 소자 기판에 있어서의 인쇄 소자 구동 시의 전자 노이즈의 발생을 억제하고, 오동작을 방지하며, 고품질 화상 인쇄가 가능한 소자 기판이 제공된다. 소자 기판에서는, 인쇄 소자를 각각 포함하는 복수의 소자 기판이 인쇄 소자의 배열 방향으로 배열된다. 인쇄 소자를 구동하기 위한 구동 전원을 공급하는 배선과, 인쇄 소자로부터의 접지 배선을 포함하는 각 소자 기판은, 이하와 같이 구성된다. 각 소자 기판은, 인쇄 소자를 구동하기 위한 히트 인에이블 신호를 각 인쇄 소자에 지연시켜서 공급하는 지연 회로와, 히트 인에이블 신호를 각 인쇄 소자에 공급하는 경우의 지연 시퀀스를, 제어 신호를 따라 전환하는 전환 회로를 포함한다.

インクジェット記録ヘッド、及び、記録装置

Inkjet printer unit having a high speed print engine

一种喷墨打印设备(2)，包括：一个介质输入托盘(3)，其用于供应用于打印的打印介质(8)；一个打印引擎(1)，其用于在所述打印介质上打印图像；和一个介质输出托盘(4)，其用于收集已打印的介质；其中，所述打印引擎包括一个可移除的喷墨墨盒(10)和一个支架(12)，该喷墨墨盒具有一个页宽打印头(22)和一个墨水供应设备(24)，而该支架具有一个体部，该体部适于容置所述可移除的喷墨墨盒并且对打印头的操作进行控制以用于打印。

Cartridge unit for inkjet printer

A pagewidth printhead assembly for an inkjet printer comprises: a body portion for receiving ink from one or more ink sources and distributing the ink to an ink distribution member; a plurality of integrated circuits extending the length of the printhead assembly, each integrated circuit having a plurality of nozzles formed in rows thereon, each of the nozzles being arranged in use to deliver the ink onto passing print media; and the ink distribution member upon which the integrated circuits are fixed and which distributes the ink from the body portion to the integrated circuits. The integrated circuits are aligned in an abutting arrangement across the length of the ink distribution member.

Controlling waveforms to reduce cross-talk between inkjet nozzles

An inkjet printhead includes two groups of interleaved nozzles. First and second sets of drop-formation waveforms are associated with the groups of nozzles to selectively cause portions of a liquid jet to break off into drops. A timing delay device time-shifts the second-group waveforms relative to those associated with the first-group waveforms. A charging-electrode waveform having portions with first and second potentials is provided to a charging electrode. The waveform energies of the second-group waveforms is larger than the waveform energies of the corresponding first-group waveforms so that printing drops break off from the liquid jets while the charging-electrode is at the first potential, and non-printing drops break off from the liquid jets while the charging-electrode is at the second potential.

Thermal actuator drop-on-demand apparatus and method for high frequency

A liquid drop emitter, such as an ink jet device, for emitting a series of liquid drops at high frequency is disclosed. The drop emitter comprises a liquid-filled chamber having a nozzle, a thermo-mechanical actuator for applying pressure to liquid at the nozzle, means for heating the thermo-mechanical actuator in response to electrical pulses, and a controller for determining the parameters of the electrical pulses. The method of operating comprises determining a nominal electrical pulse having a nominal energy E 0 , a nominal pulse duration T P0 , which causes the emission of at least one drop at a sustained period of repetition T C . The method of operating further determines a steady state electrical pulse having energy E 0 , a steady state pulse duration T Pss , which, when applied to the electroresistive means does not cause the emission or weeping of the liquid from the nozzle. The method applies to the means for heating, during every period of time T C , a nominal electrical pulse to emit at least one drop, or a steady state electrical pulse, so that an average power P AVE , where P AVE =E 0 /T C , is applied to the liquid drop emitter in order to maintain a steady state thermal condition.

The control method of imaging device and imaging device

一种成像装置，包括：喷射头，该喷射头包括多个喷射口，这些喷射口构造成喷射液体；流动路径，用于向所述多个喷射口供给液体；以及控制单元，该控制单元构造成控制从喷射口喷射的液体的量，其中，根据流动路径中的压力损失程度来设置喷射头中的包括喷射口的多个区域，与所述多个区域中的每个区域相关联的阈值设置成每单位时间从提供于这些区域中的喷射口喷射的量，以及对于所述多个区域中的每个区域，控制单元将每单位时间喷射的液体量控制成等于或小于所述阈值。以及一种成像装置的控制方法。

Combination Printer and Image Reader in L-Shaped Configuration

인쇄를 위한 매체를 지지하기 위한 매체입력조립체, 인쇄된 매체를 수집하기 위한 매체출력조립체, 및 매체 상에 이미지를 인쇄하기 위한 프린트 엔진을 포함하는 잉크젯 프린터(2)가 제공되어 있다. 이 장치는 매체출력조립체가 이미지판독유닛이고 인쇄매체가 이미지판독유닛의 표면 상에 수집되도록 구성되어 있다. 잉크젯 프린터, 매체입력조립체, 매체출력조립체, 이미지 판독기, 인쇄매체, 다기능, 다목적, 복합 프린터, 스캐너

Printheads using data packets containing address data

프린트헤드는 어드레스들의 세트를 전달하기 위한 어드레스 라인, 및 다수의 프리미티브(primitives)를 포함하고, 각 프리미티브는 어드레스 라인에 연결된 복수의 제어가능한 활성화 디바이스들을 포함하며, 각 스위치는 상기 어드레스들의 세트 중 적어도 하나의 어드레스에 대응하고, 각각의 어드레스는 다수의 프리미티브 기능(function)들 중 하나에 대응한다. 버퍼는 일련의 데이터 패킷들을 수신하고, 각 데이터 패킷은 상기 어드레스들의 세트 중 하나의 어드레스를 나타내는 어드레스 비트들을 포함한다. 어드레스 로직은 버퍼로부터 어드레스 비트를 수신하고, 어드레스 로직은, 각 데이터 패킷에 대해, 어드레스 비트에 의해 표현된 어드레스를 어드레스 라인 상으로 인코딩하며, 인코딩된 어드레스에 대응하는 적어도 하나의 스위치는 어드레스에 대응하는 프리미티브 기능을 활성화한다.

Recording liquid ejecting apparatus of print head

본 발명은 프린트헤드의 기록액 분사장치에 관한 것이다. 본 발명은 박막이 냉각되는 과정에서 원상태로 복원될 때 대기압보다 낮은 압력에 의해 그 복원력이 증가되도록 함으로서, 기록액이 분사된 다음 액실에 보충되는 시간 즉 작동주파수가 증가되어 프린트성능이 향상되는 프린트헤드의 기록액 분사장치에 관한 것으로서, 특히 온도변화에 따라 형상변화가 되는 형상기억합금의 박막과, 상기 박막의 온도변화를 발생시키는 전원공급부와, 상기 박막이 결합되어 강제로 형상변화되도록 대기압보다 낮은 상태의 공간부를 갖는 기판과, 상기 박막 위에 설치되고 기록액을 저장하기 위한 액실이 형성되어 있으며 상기 액실을 둘러싼 벽면의 일측에 상기 기록액이 유입되도록 유로가 형성된 유로판과, 그리고 상기 유로판 위에 설치되고 상기 박막이 형상변화될 때 상기 기록액이 액적의 형태로 분사될 수 있도록 상기 유로판의 액실 면적보다 작은 면적의 노즐이 형성된 노즐프레이트가 구비된 특징이 있다.

Printhead employing data packets including address data

프린트헤드는 어드레스들의 세트를 전달하기 위한 어드레스 라인, 및 다수의 프리미티브(primitives)를 포함하고, 각 프리미티브는 어드레스 라인에 연결된 복수의 제어가능한 활성화 디바이스들을 포함하며, 각 스위치는 상기 어드레스들의 세트 중 적어도 하나의 어드레스에 대응하고, 각각의 어드레스는 다수의 프리미티브 기능(function)들 중 하나에 대응한다. 버퍼는 일련의 데이터 패킷들을 수신하고, 각 데이터 패킷은 상기 어드레스들의 세트 중 하나의 어드레스를 나타내는 어드레스 비트들을 포함한다. 어드레스 로직은 버퍼로부터 어드레스 비트를 수신하고, 어드레스 로직은, 각 데이터 패킷에 대해, 어드레스 비트에 의해 표현된 어드레스를 어드레스 라인 상으로 인코딩하며, 인코딩된 어드레스에 대응하는 적어도 하나의 스위치는 어드레스에 대응하는 프리미티브 기능을 활성화한다. The printhead includes an address line for carrying a set of addresses, and a plurality of primitives, each primitive including a plurality of controllable activation devices connected to the address line, each switch comprising at least one of the set of addresses. Corresponding to one address, and each address corresponds to one of a number of primitive functions. The buffer receives a series of data packets, and each data packet contains address bits representing an address of one of the set of addresses. The address logic receives the address bits from the buffer, the address logic encodes the address represented by the address bit onto the address line for each data packet, and at least one switch corresponding to the encoded address corresponds to the address. Activates the primitive function.

Micro-electromechanical actuator with control logic circuitry

A micro-electromechanical actuator includes a substrate. An elongate actuator arm has a fixed end portion that is fast with the substrate and a free end portion that is spaced from the substrate. The elongate actuator arm incorporates a heating circuit that is connectable to a power supply to heat the actuator arm. At least a portion of the actuator arm is of a material having a coefficient of thermal expansion which is such that the material is capable of thermal expansion to do work. The heating circuit is positioned to generate differential thermal expansion and contraction when heated and subsequently cooled to cause reciprocal displacement of the free end portion of the actuator arm. Control logic circuitry is positioned on the substrate along an elongate region defined on the substrate and interposed between the actuator arm and the substrate. The control logic circuitry is connected to the heating circuit to enable and disable the power supply according to a control signal received by the control logic circuitry.

Wall mountable printer with removable cartridge

A printer unit is provided comprising a print engine incorporating a removable pagewidth printhead for printing on print media and a body arranged to house the print engine and to be mountable to a substantially vertical surface so as to suspend the printer unit. Such a wall mountable printer is capable of blending into the design of a home or a work space within office environment whilst providing high-speed, e.g., more than 30 pages per minute, and high-quality, e.g., images of about 1200 dots per inch or more, printing capabilities and ease of use.

Cradle unit having printhead maintenance and wiping arrangements for a print engine

The invention relates to a cradle unit for a print engine having an inkjet printhead and a PCB controller, the cradle unit configured to receive a cartridge unit having a printhead assembly of the print engine with a controller on a flex PCB. The cradle unit includes a cover assembly movable between a closed position, where the cartridge unit is mechanically secured in the cradle unit and the PCB controller of the print engine electrically contacts the flex PCB controller such that power and data signals can be transferred therebetween, and an open position where the electrical contact is broken and allows the cartridge unit to be removed from the cradle unit. The cradle unit also includes a maintenance drive assembly having a motor operatively connected to a maintenance gear and actuator arrangement and to a wiper gear and actuator arrangement, the maintenance drive assembly operated by the PCB.

Thermal actuator with spatial thermal pattern

Printhead integrated circuit assembly with compensation controller

This invention relates to a printhead integrated circuit assembly having a substrate, drive circuitry and a controller. The substrate includes a plurality of micro-electromechanical nozzle arrangements formed thereon. The drive circuitry is positioned on the substrate for operatively actuating the respective nozzle arrangements to eject a drop of printing fluid therefrom. The controller is configured to monitor the power required to eject a drop from each nozzle, and to deactivate such nozzle and compensate with another nozzle if a required power level is exceeded.

Ink jet nozzle assembly with over-actuation detection

An ink jet nozzle assembly for an inkjet printer includes a substrate that defines an ink supply channel. An integrated circuitry layer is positioned on the substrate and incorporates a microprocessor and a first electrical contact connected to the microprocessor. A nozzle chamber structure is positioned on the substrate and defines a nozzle chamber in fluid communication with the ink supply channel and an ink ejection port from which ink can be ejected. An actuator is fast with respect to the support and terminates in a free end within the housing. The actuator is electrically connected to the integrated circuitry layer and has a second actuator connected to the microprocessor via the actuator. The microprocessor is configured to detect the rate of movement of the actuator to a predetermined position beyond an operating position of the actuator arm and to determine whether the detected rate is greater than a normal rate for desired actuation of the actuator arm so as to detect an over-actuation condition.

Inkjet printer for photographs

A photo printer that prints 6″×4″ photos that has a stationary printhead. The printhead has a plurality of color channels, each color channel comprising at least one nozzle row extending along the length of said printhead, each nozzle in a color channel ejecting the same colored ink. The photo printer also has means for continuously moving 6″×4″ paper sheets past the printhead and during use, all firing nozzles of each color channel selected for one line of printing are fired within about 200 microseconds.

Inkjet Printhead and Printhead Nozzle Arrangement

A printhead for an inkjet printer comprises a wafer assembly defining spaced apart groups of ink supply channels; and groups of ink ejection nozzle arrangements extending from the wafer assembly and in fluid communication with respective ink supply channel groups, each group of ink ejection nozzle arrangements comprising a pair of rows of ink ejection nozzle arrangements. Each nozzle arrangement includes an ink ejection head from which an actuator tail extends. Each pair of rows of ink ejection nozzle arrangements are arranged such that the ink ejection heads of the ink ejection nozzle arrangements in a first row of the pair face toward and are adjacent to the ink ejection heads of the ink ejection nozzle arrangements in a second row.

Printer control circuitry for reading ink information from a refill unit

A refill unit for refilling an ink cartridge that forms part of an inkjet printer. The printer also having a printhead, control circuitry and an interface for releasably engaging the refill unit. The refill unit has a body containing a quantity of ink, an ink outlet, and a memory circuit for storing information relating to at least one characteristic of the ink. During use the memory circuit allows to the control circuit to interrogate it to verify that the ink in the refill unit is suitable for the printer.

Fault tolerant printhead

在一个示例中，容错打印头包括流体致动器的阵列。每个流体致动器包括用于检测故障流体致动器的故障传感器和用于存储流体致动器的故障传感器状态的每流体致动器存储器。容错打印头还包括用于读取每个每流体致动器存储器的状态的接口。

Cradle unit which electromagnetically operates printhead capper

A cradle unit is provided which has a body complementary to a removable printhead cartridge, the removable printhead cartridge having a pagewidth printhead and a capper assembly, a controller for controlling operation of the printhead to facilitate printing when the removable printhead cartridge is received within the body, and an electromagnet assembly on the body which is controlled by the controller for operating the capper assembly of the removable printhead cartridge to permit the operation of the printhead.

Controlled drop generator with thermal actuator and high frequency ancestor

printhead employing data packets including address data

Inkjet printhead having thermal bend actuator heating element electrically isolated from nozzle chamber ink

An ink jet printhead includes a number of nozzle devices formed on a substrate. Each nozzle device has a nozzle chamber, a nozzle opening through which ink from the nozzle chamber is ejected, a movable element in contact with ink in the nozzle chamber to cause the ejection of ink and thermal bend actuator. The thermal bend actuator has a proximal end anchored to the substrate and a distal end connected to the movable element. The actuator includes a first portion adjacent the proximal end and having a conducting heating circuit layer for heating the actuator. A second end portion of the actuator extends to the movable element and is in contact with ink in the chamber. A dielectric slot electrically isolates the first and second portions so that electric energy in the heating circuit layer is not conducted by the actuator to the ink in the chamber.

Nozzle arrangement with a movement sensor for an inkjet printer

The invention provides for a nozzle arrangement for an inkjet printer. The arrangement includes a wafer substrate defining a chamber with an ink inlet and ejection port, the substrate having a micro-electromechanical drive layer. The arrangement also includes a paddle dividing the chamber into an ink chamber and a nozzle chamber, and an actuating arm coupled to the paddle. The arm includes an outer arm portion mechanically linked to an inner arm portion via posts electrically isolating the inner arm portion from the outer arm portion. The arm is pivotal with respect to the substrate during operative electrical thermal expansion of the inner arm portion displacing the paddle towards the ejection port. The nozzle arrangement also includes a microprocessor arrangement having amplifier elements defined within the drive layer, and a movement sensor having a moving contact element formed integrally with the inner arm portion and a fixed contact element formed integrally with the drive layer and connected to the amplifier elements. The moving contact is arranged to complete an electrical circuit when contacted with the fixed contact element when the arm pivots to a predetermined extent.

A system that detects inoperable inkjets in a print head that ejects transparent ink using a thermal substrate.

Ink refill unit with incremental ink ejection for a print cartridge

An ink refill unit for a print cartridge is provided. The unit includes a housing which defines a fluid path in fluid communication with an outlet. The unit also includes an ink reservoir having an ejection port arranged in fluid communication with the fluid path inside the housing, and an ejector assembly configured to incrementally eject ink from the reservoir when the assembly is actuated by the print cartridge.

Printer comprising small area print chips forming a pagewidth printhead

A printer with a stationary printhead that extends across a paper path, and has a plurality of color channels, each with at least one nozzle row extending along the length of the printhead. Each nozzle in a color channel ejects the same colored ink, and the printhead is made up of one or more printhead chips, where each printhead chip has a chip area of less than 1 cm 2 .

Improvements relating to inkjet printers

An inkjet printhead having a series of nozzles for the ejection of ink wherein each said nozzle has a rim formed by the deposition of a rim material layer (42) over a sacrificial layer (41) and a subsequent planar removal of at least said rim material layer so as to form said nozzle rim.

Pagewidth printhead cartridge having an integral capper unit associated therewith

A cartridge unit for an inkjet printer comprising: a body portion having one or more ink storage compartments; a pagewidth printhead assembly mountable to said body portion and configured to receive ink from the one or more compartments for printing; and a capper unit mountable to said body portion so as to extend along the length of the printhead assembly, the capper unit housing a capping element which is movable with respect to the capper unit to contact a surface of the printhead assembly.

Method of fabricating an inkjet printhead chip having laminated actuators

A method of fabricating an inkjet printhead chip which includes the step of fabricating drive circuitry layers on a substrate with a CMOS fabrication process. A first sacrificial layer is deposited on the substrate. A heater layer for heating circuits is deposited on the first sacrificial layer and etched to form the heating circuits. A resiliently flexible layer of dielectric material is deposited on the substrate to cover the heater layer and etched to form actuators and ink ejection members. A second sacrificial layer is deposited on the substrate to cover the actuators and the ink ejection members and etched to define deposition zones for the nozzle chamber walls and the roof walls. A layer of a structural material is deposited on the second sacrificial layer to form the nozzle chamber walls and the roof walls. The sacrificial layers are finally etched away.

Method of refilling a printing unit

A method of refilling a supply of printing fluid in a printing unit. The method comprises the steps of removably mounting a dispenser unit of printing fluid to the printing unit so as to align and engage a plurality of outlets of the dispenser unit with a plurality of inlets of a plurality of printing fluid storage chambers of the printing unit, the dispenser unit being configured so that only one outlet of the plurality of outlets connects to printing fluid stored within an enclosure of the dispenser unit; determining an amount of printing fluid needed to refill the printing fluid storage chamber via the inlet engaged with said one outlet; disengaging a ratchet mechanism of the dispenser unit so as to facilitate a reduction of volume in the enclosure by a plunger; and engaging the plunger so as to effect the reduction of volume in the enclosure until the ratchet mechanism is reengaged, thereby dispensing fluid from the enclosure into the printing fluid storage chamber. The steps of disengaging the ratchet mechanism and engaging the plunger are repeated until the determined amount of printing fluid is dispensed into the printing fluid storage chamber.

Printer for nesting with image reader

A printer is provided having a body shaped for nesting with an image reader, and a printhead for printing of print media. The body is configured so that the nested image reader extends outwardly therefrom such that printed media from the printhead is collected on a surface of the image reader.

Network inkjet printer unit having multiple media input trays

An inkjet printer unit for use in a network environment comprising: a body having; at least one media input tray for supplying one or more sheets of media for printing; a print engine for printing an image on a sheet of media, said print engine including a removable pagewidth inkjet printhead; and a delivery passage for delivering a sheet of media from the at least one media input tray to the print engine for printing; wherein the base of the body is configured to receive at least one auxiliary media input tray for supplying one or more sheets of media for printing, and an opening is provided in said base to receive a sheet of media from said auxiliary media input tray for delivery to the print engine via said delivery passage.

Inkjet printhead with nozzle rim

An inkjet printhead having a series of ink ejection nozzles each having a fist meniscus rim around which an ink meniscus normally forms. An extended ink flow prevention rim is provided spaced apart from the first meniscus rim and substantially encircling the first meniscus rim so as to prevent the flow of fluid across the surface of the inkjet printhead.

Inkjet printhead apparatus

An inkjet printhead having a series of nozzles for the ejection of ink wherein each said nozzle has a rim formed by the deposition of a rim material layer ( 42 ) over a sacrificial layer ( 41 ) and a subsequent planar removal of at least said rim material layer so as to form said nozzle rim.

Cartridge for printer having fluid flow arrangement

A cartridge for a printer is provided having a body defining a number of fluid reservoirs, a lid covering the body to seal fluid inside the reservoirs, and a printhead operatively fed with fluid from the reservoirs. A base of each reservoir is provided with a raised portion which surrounds a fluid outlet through which fluid flows for supply to the printhead. Each raised portion being molded in the body to separate the outlet from the base of each reservoir to ensure a sufficient flow rate of fluid from the reservoir.

Over actuation detection in a micro electromechanical device

A method of detecting an over actuation condition within a micro electromechanical device in the form of an ink ejection nozzle having an actuating arm that moves an ink displacing paddle when heat inducing electric current is passed through the actuating arm and having a movement sensor associated with the actuating arm. The method comprises the steps of passing at least one current pulse having a predetermined duration through the actuating arm and detecting for a rate of movement of the actuating arm. A fault condition is detected to exist where the detected rate of movement is in excess of the rate for normal operation.

Pagewidth inkjet printhead incorporating power and data transmission film positioning protuberances

A pagewidth inkjet printhead is provided which comprises an elongate ink distribution assembly connectable to an ink supply. A printhead chip is mounted to the ink distribution assembly to receive ink from the ink distribution assembly and a plurality of positioning protuberances protrude from the ink distribution assembly. A power and data transmission film is positioned about the ink distribution assembly using the plurality of positioning protuberances. At least one power busbar is positioned about the ink distribution assembly also using the plurality of positioning protuberances. The positioning protuberances may protrude from an outer surface of the ink distribution assembly and the power and data transmission film can be a tape automated bonding (TAB) strip interconnecting the at least one power busbar and the printhead chip.

Printhead employing data packets including address data

PRINTHEAD EMPLOYING DATA PACKETS INCLUDING ADDRESS DATA Abstract A printhead including an address line for communicating a set of addresses and a number of primitives, each primitive including a plurality of controllable switches coupled to the address line, each switch corresponding to at least one address of the set of addresses, each address corresponding to one of a number of primitive functions. A buffer receives a series of data packets, each data packet including address bits representative of one address of the set of addresses. Address logic receives the address bits from the buffer, wherein for each data packet the address logic encodes the address represented by the address bits onto the address line, and wherein the at least one switch corresponding to the address activates the primitive function corresponding to address. WO 2016/130157 PCT/US2015/015916 PRIMITIVE GROUP PG(L) 294 302 300 1 9 2 ------------------? EMBEDDED FIRE PRIMITIVE PRIMITIVE PRINT> BUFFER ADDRESS PULSE POWER GROUND DATA - LOGIC_1__96 197 197 PACKETS 208 202 241061 162-1 DATA ADDRESS A1 AND 162-2 1l70-1 DECODE 206-2 >ADDRESS A2 A170-2 PRIMITIVE DECODE P(2) 0162-N 204-2 206-N 4-ADDRESS AN AND T170-N 204-N IL 206-1 162-1 2m4-1 fl ADDRESS A1 AN 162-217 DECODE 206-2 180 ADDRESS A2 -- AND 170-2 PRIMITIVE 0-DECODE4-)- P(N) .206-N .204-2 . AD162-Nj"L ADDRESS AN AND :11 70-N 204-N Fig. 7

Network inkjet printer unit having multiple media input trays

An inkjet printer (1) for use in a network environment comprising: a body (2) having; at least one media input tray (4) for supplying one or more sheets of media for printing; a print engine (3) for printing an image on a sheet of media, said print engine (3) including a removable pagewidth inkjet printhead; and a delivery passage for delivering a sheet of media from the at least one media input tray (4) to the print engine (3) for printing; wherein the base of the body (2) is configured to receive at least one auxiliary media input tray for supplying one or more sheets of media for printing, and an opening is provided in said base to receive a sheet of media from said auxiliary media input tray for delivery to the print engine via said delivery passage.

Ink supply unit for an ink jet printer

An ink supply unit is provided for supplying ink to a printhead in a printer. The supply unit includes an elongate housing defining a longitudinally extending channel. A baffle member is configured to be received in the channel to define ink chambers which can each contain a respective type of ink. The baffle member is configured to inhibit excessive movement of ink in each chamber. An elongate manifold defines a plurality of sets of ink passages and is configured to be located with respect to the baffle member so that ink from each ink chamber can be provided to a respective set of ink passages. The manifold further defines a recess in which an ink ejecting printhead can be received. Each ink passage tapers to define a respective outlet located within the recess which can be engaged in fluid communication with the printhead.