An ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head

A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Ink cartridge and a method for sealing an aperture provided for such cartridge

An ink cartridge for ink jet use is provided with an aperture for filling in the cartridge with ink. The circumference of the aperture and a part of a plug pressed in the aperture are fused and welded to be formed integrally to airtightly close the aperture, and obtain an integrated structure without any interface. Hence, it is made possible to reliably prevent ink from leaking therefrom, even if some scratches and cracks are present on both of them. This contributes to eliminating inspection steps to find ink leakage in the course of manufacture, and also, contributes to improving the yield of production. As a result, a significant reduction of costs is possible, while enhancing the reliability of the ink cartridge.

An ink jet recording apparatus

Ink jet recording apparatus

An ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

An ink cartridge and a method for sealing an aperture provided for such cartridge

Ink container and manufacturing method for the same

IMAGE FORMING APPARATUS USING TWO-COMPONENT DEVELOPER

An image forming apparatus includes a magnetic roller voltage applier for a magnetic roller, a developing roller voltage applier for a developing roller and a controller for controlling the appliers. The controller controls the magnetic roller voltage applier to apply, to the magnetic roller, a first voltage for forcibly conveying a thin layer of toner held on the developing roller toward the magnetic roller for a first period required for one turn of the developing roller, and controls the developing roller voltage applier to apply, to the developing roller, a second voltage for causing toner on the developing roller to fly onto the image carrier for a second period when at least the forcible consumption electrostatic latent image faces a facing portion between the developing roller and the magnetic roller. At least parts of the first period and the second period are overlapped with each other.

Developing roller, developing device, and image forming apparatus including developing device

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes a resin coat layer that is formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being made of a resin material and having electric conductivity. An AC impedance Z obtained from an application of an AC voltage at a frequency in a range from 0.05 Hz to 100 Hz is equal to or higher than 100Ω, and a phase angle θ satisfies a relationship of 0 rad<θ<0.1 rad when a power factor is cos θ=Za/Z.

Image forming apparatus and image forming method

A method and apparatus for image forming includes a hybrid developing apparatus that supplies surly charged toner to a developing roll. The apparatus includes a developing roll that is electrically conductive at least on its surface. The image forming apparatus and the method have a constitution capable of applying an alternating current bias having a duty ratio in the range of 10 to 50% and a direct current bias superposed thereon. The developing roll is directly confronted with a latent image bearing body through an insulative toner thin layer at the nearest region of the developing roll and the latent image bearing body. An independent bias is applied to each of the developing roll and the magnetic roll, and the toner is refreshed by the varying duty ratio of the alternate current bias and the direct current bias after developing.

Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head

A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Developing roller, developing device, and image forming apparatus including developing device

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. In the roller main body, a boehmite layer has been formed on an outer circumferential surface of a base body that is made of a metal including aluminum, by a surface treatment by a boehmite method, and a resin coat layer has been formed on a surface of the boehmite layer, the resin coat layer being made of a resin material having electric conductivity.

Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

An ink-jet ink cartridge having an ink containing portion for containing the ink to be supplied to an ink-jet head, and a lid for covering the ink containing portion, characterized in that a wall of the ink containing portion and one face of the lid are welded together owing to frictional heat by vibration.

Carrier for electrophotography and developer for electrophotography using the carrier

A carrier for electrophotography includes a carrier core material provided with magnetism and a coating layer which coats the surface of the carrier core material and includes a high molecular weight polyethylene resin having a weight average molecular weight of 50,000 or more. An outermost layer containing a magnetic powder having a three-dimensional form of a convex polyhedron is formed on the outermost surface of the coating layer.

DEVELOPING DEVICE, IMAGE FORMING APPARATUS

Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×10 5 Ω to 1.0×10 6 Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.

DEVELOPING ROLLER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING DEVELOPING DEVICE

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. A resin coat layer has been formed on an outer circumferential surface of the roller main body, the resin coat layer being made of a resin material having electric conductivity. A product of resistance component Rs [Ω] and electrostatic capacitance component Cs [F] in AC impedance Z of the roller main body is in a range from 2.79×10 −7 to 6.77×10 −5 , the AC impedance Z being obtained when an AC voltage of a predetermined frequency f is applied.

Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

An ink-jet ink cartridge having an ink containing portion for containing the ink to be supplied to an ink-jet head, and a lid for covering the ink containing portion, characterized in that a wall of the ink containing portion and one face of the lid are welded together owing to frictional heat by vibration.

Ink container and manufacturing method for the same

An ink container includes an ink absorbing material accommodating chamber for accommodating an ink absorbing material for retaining ink to be supplied to a recording head; an ink supply opening connectable with said recording head to supply the ink to the recording head from said accommodating chamber; an air vent portion for fluid communication between said accommodating chamber with ambience; wherein said air vent portion has an inside opening in fluid communication with an inside of said accommodating chamber, an outside opening open to the ambience, and a fluid communication path in fluid communication with said inside opening and outside opening; wherein said outside opening takes, when said container is mounted on an apparatus with which it is usable, a position lower than that taken by said inside opening.

Developing roller, developing device, image forming apparatus, and manufacturing method of developing roller

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes an aluminum oxide thin film and a resin coat layer, the aluminum oxide thin film being formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being formed on a surface of the aluminum oxide thin film that has been subjected to a predetermined heating process, the resin coat layer being made of a resin material and having electric conductivity.

Electrostatic latent image developer

An electrostatic latent image developer is provided which has an improved durability and a longer life-time by preventing the toner spent. The electrostatic latent image developer comprises a resin-coated magnetic carrier and a toner. Said resin-coated magnetic carrier consists of a magnetic ferrite carrier core and a coating layer formed thereon by polymerizing a high molecular weight polyethylene resin directly on the surface of said carrier core. Said toner does not contain polyethylene wax but polypropylene wax and/or polyester wax having an average molecular weight of 10,000 as the wax component or components in an amount of from 0.1 to 20 wt. %.

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head.There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent form the heating resistor elements and the function element, and haws a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement ...

DEVELOPING ROLLER, DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND MANUFACTURING METHOD OF DEVELOPING ROLLER

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes an aluminum oxide thin film and a resin coat layer, the aluminum oxide thin film being formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being formed on a surface of the aluminum oxide thin film that has been subjected to a predetermined heating process, the resin coat layer being made of a resin material and having electric conductivity.

Developing device having air discharge duct and image forming apparatus including the developing device

A developing device includes a developing container, a first stirring member and a second stirring member, and a developing roller. The developing container includes a first stirring chamber, a second stirring chamber, and a communication portion. The first stirring member includes a reverse spiral vane that conveys a developer in a direction reverse to a circulation direction. An air discharge duct is formed on a wall portion of the first stirring chamber opposed to the reverse spiral vane and in an area excluding the communication portion and discharges air from the first stirring chamber to an outside of the developing container via an air discharge port at a distal end of the air discharge duct. A filtration portion is disposed in the air discharge duct adjacently to the air discharge port and restricts leakage of the developer through the air discharge port.

Elements substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatus

An ink jet head includes a plurality of liquid flow paths for ejecting the ink; and a plurality of heat generating resistors for the respective liquid flow paths, the heat generating resistor being independently drivable; wherein adjacent ones of the heat generating resistors are spaced by not more than 8 microns.

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving record head

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head. There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent form the heating resistor elements and the function element, and haws a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement ...

Image forming apparatus using two-component developer and having controlled timing of application of voltage to magnetic roller

An image forming apparatus includes a magnetic roller voltage applier for a magnetic roller, a developing roller voltage applier for a developing roller and a controller for controlling the appliers. The controller controls the magnetic roller voltage applier to apply, to the magnetic roller, a first voltage for forcibly conveying a thin layer of toner held on the developing roller toward the magnetic roller for a first period required for one turn of the developing roller, and controls the developing roller voltage applier to apply, to the developing roller, a second voltage for causing toner on the developing roller to fly onto the image carrier for a second period when at least the forcible consumption electrostatic latent image faces a facing portion between the developing roller and the magnetic roller. At least parts of the first period and the second period are overlapped with each other.

Method of manufacturing an ink container

A manufacturing method for an ink container mountable to an ink jet apparatus in which the ink container includes an ink supply port, an air vent which has an inside opening which opens to an inside of the ink container, a groove functioning as an outside opening and extended from the inside opening, and a wall except in a region functioning as an outside opening around the groove. According to the method, a seal member is positioned to a position corresponding to the ink supply port and the air vent, and the wall is thereafter collapsed through the seal member by a welding horn. By virtue of this method, a cover is thus provided in the wall above the groove to form a fluid communication path for fluid communication between the inside opening and the outside opening, with simultaneous welding of the seal member by heat.

Ink jet head, apparatus and method having individually-drivable heat generating resistors variably spaced from an ejection outlet

An ink jet head includes ink ejection outlet for ejecting ink, a plurality of heat generating resistors for generating thermal energy contributable to ejecting the ink, and ink flow path comprising the plurality of the heat generating resistors and being in fluid communication with the ejection outlet, the heat generating resistors generating the thermal energy upon receiving a driving signal, so that a bubble is generated in the ink within the ink flow path to eject the ink through the ink ejection outlet; wherein the plurality of the heat generating resistors are arranged in parallel, relative to the ink ejecting direction, in the ink flow path, and the distances from the heat generating centers of the heat generating resistors to the ejection outlet are different.

Image forming apparatus and image forming method

In order to provide a compact, rapid and inexpensive image forming apparatus and method of the same having a hybrid developing apparatus wherein developing ghost and selective developing are avoided without complicating a developing apparatus and surly charged toner is supplied to a developing roll while stable quality images are obtained for a long time, an image forming apparatus and a method of the same which is characterized in that a developing roll is electrically conductive at least on its surface and a continuous plane of electrode to which a developing bias is applied in the direction of circumference at developing region by the surface is formed, and that the image forming apparatus and the method have a constitution capable of applying an alternate current bias having a duty ratio within the range from 10 to 50% and a direct current bias superposed thereon wherein the developing roll is directly confronted with a latent image bearing body through an insulative toner thin layer ...

Developing device, image forming apparatus

Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×10 5 Ω to 1.0×10 6 Ω and surface roughness Ra of resin coat layer is in range from 0.057 μm to 0.280 μm, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.

Developing Device That Removes Toner Accumulated on Top Surface of Regulating Blade with Simple Configuration, and Image Forming Apparatus Including the Same

A developing device includes a developing roller, a toner supply roller, a regulating blade, a casing, and a cleaning member. The developing roller supplies a toner to the image carrier in a region opposed to an image carrier. The toner supply roller is located opposed to the developing roller. The toner supply roller forms a magnetic brush made of a two-component developer including a magnetic carrier and a toner on an outer peripheral surface to supply a toner to the developing roller in a region opposed to the developing roller. The regulating blade is located opposed to the toner supply roller at a predetermined interval. The casing houses the developing roller, the toner supply roller, and the regulating blade. The cleaning member reciprocates along a longitudinal direction of the regulating blade so as to remove a toner accumulated on a top surface of the regulating blade.

Image formation method and apparatus using electrophotography

Disclosed is an image formation method using electrophotography, comprising the steps of supplying a developer by a developing device (17) onto a photosensitive drum (11) in rotation to form a toner image thereon, transferring the formed toner image onto a transfer paper to form an image on the transfer paper, and removing untransferred developer by use of a cleaning blade (21), wherein an OPC photosensitive drum (11) is used for the photosensitive drum and includes a photosensitive layer (27) being formed on an electrically conductive base (25) and having an initial thickness which is a value within a range of 20 to 50 mum, and wherein the amount X of reduction in the thickness of the photosensitive layer (27) in the OPC photosensitive drum (11) satisfies the following expression (1)X: by way of example, the amount (mum) of reduction in the thickness of photosensitive layer (27) when 10,000 sheets have been printed at printing speed of 6 sheets/min using A4 size transfer paper longitudinal ...

Carrier for electrophotography, process for production of the carrier and developing agent for electrophotography using the carrier

An electrophotographic carrier, which has high charging characteristics and an excellent durability, does not dull a color image and has an excellent moisture resistance is provided. A process for the production of the carrier and a developing agent for electrophotography using the carrier are also provided. The electrophotographic carrier comprises a carrier core material provided with magnetism and a coating layer formed on the surface of the carrier core material, the coating layer containing at least a hydrophobic white conductive material and a high molecular weight polyethylene resin.

Sealing method for ink cartridge

A sealing method for an ink container having a front side, a rear side, a bottom side, an upper side and two lateral sides, and having an ink supply port for supplying ink to a recording head portion and an air vent for fluid communication between an inside of the ink container and ambience. A seal member is mounted on a first one of the sides and on a second one of the sides continuous with the first side, the seal member having a width larger than a width of the first and second sides. A portion of the seal member is inwardly folded beyond the width of the first side. A portion of the seal member is outwardly folded beyond the width of the second side. The inwardly folded portion of the seal member is heat-sealed to a side of a packaging bladder for accommodating the ink container.

Ink cartridge and a method for sealing an aperture provided for such cartridge

An ink cartridge for ink jet use is provided with an aperture for filling in the cartridge with ink. The circumference of the aperture and a part of a plug pressed in the aperture are fused and welded to be formed integrally to airtightly close the aperture, and obtain an integrated structure without any interface. Hence, it is made possible to reliably prevent ink from leaking therefrom, even if some scratches and cracks are present on both of them. This contributes to eliminating inspection steps to find ink leakage in the course of manufacture, and also, contributes to improving the yield of production. As a result, a significant reduction of costs is possible, while enhancing the reliability of the ink cartridge.

Image forming apparatus

The exposing unit emits a pair of light beams deflected to reverse scanning directions each other by a rotary polyhedron. The pattern creation unit creates color misregistration detection patterns on the transfer unit by the toner image in a reference color formed by a light beam emitted from an exposing unit and the toner image in an adjustment color formed by the other light beam having a different scanning direction. The color misregistration correction unit, on the basis of the image forming position of the toner image in the reference color, moves an image forming position of the toner image in each color formed by the light beam having the scanning direction opposite to the light beam corresponding to the reference color according to the color misregistration adjustment amount detected by the adjustment amount detection unit.

Image forming apparatus including a neutralizing unit for neutralizing electric charge on an image supporting body

The neutralization units 12 a and 12 b are arranged between the primary transfer positions and the cleaning units 11 a and 11 b , and, irradiate a region on the image supporting body 2 a with first neutralization light 131 , the regions spanning from a position facing the primary transfer position to a position facing the cleaning unit 11 a . The neutralization units 12 a and 12 b irradiate a region on the image supporting body 2 b with second neutralization light 132 , the region spanning from a position facing the developing unit 16 b to a position facing the primary transfer position. The neutralization units 12 a and 12 b include a first reflective part and a second reflective part provided at different positions on a side face of the light guiding body. The first reflective part forms the light 131 and the second reflective part forms the light 132 by reflecting the light from the neutralization light source.

Element substrate having connecting wiring between heat generating resistor elements and ink jet recording apparatus

An ink jet head includes a plurality of liquid flow paths for ejecting the ink; and a plurality of heat generating resistors for the respective liquid flow paths, the heat generating resistor being independently drivable; wherein adjacent ones of the heat generating resistors are spaced by not more than 8 microns.

Cleaning device and image forming apparatus therewith

A cleaning device has a housing where an opening and a toner storage portion are formed, a cleaning member arranged in the opening, a collection roller collecting toner attached to the cleaning member, a blade scraping off toner attached to the collection roller, a sheet member dividing between the toner storage portion and the opening, and a sealing member arranged to be in contact with the housing and both end parts of the outer circumferential surface of the collection roller in the axial direction. A first region having a predetermined surface roughness is formed in a middle part of the circumferential surface of the collection roller in the axial direction, and a second region having a lower surface roughness than the first region is formed next to both end parts of the first region in the axial direction.

DEVELOPING ROLLER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING DEVELOPING DEVICE

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. In the roller main body, a boehmite layer has been formed on an outer circumferential surface of a base body that is made of a metal including aluminum, by a surface treatment by a boehmite method, and a resin coat layer has been formed on a surface of the boehmite layer, the resin coat layer being made of a resin material having electric conductivity. 1. A developing roller comprising:a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier, wherein in the roller main body, a boehmite layer has been formed on an outer circumferential surface of a base body that is made of a metal including aluminum, by a surface treatment by a boehmite method, and a resin coat layer has been formed on a surface of the boehmite layer, the resin coat layer being made of a resin material having electric conductivity.2. The developing roller according to claim 1 , wherein a product of resistance component Rs [Ω] and electrostatic capacitance component Cs [F] in AC impedance Z of the roller main body is in a range from 8.0×10to 1.8×10 claim 1 , the AC impedance Z being obtained when an AC voltage of a predetermined frequency f is applied to between a supporting shaft of the base body and a surface of the roller main body.3. The developing roller according to claim 1 , whereinthe resin coat layer is formed from nylon resin which contains titanium oxide in a dispersed state.4. The developing roller according to claim 1 , whereinthe roller main body is in a range from 12 mm to 20 mm in outer diameter.5. The developing roller according to claim 1 , whereinsurface roughness Ra of the resin coat layer of the roller main body is in a range from 0.21 ∞m to 0.26 ∞m.6. The developing roller according to claim 1 , whereinthe AC voltage applied to the roller main body is a sine wave of 5 V, and the frequency f is 3 ...

Printing head, printing method and apparatus using same, and apparatus and method for correcting said printing head

A printing head has a plurality of heater boards, each of which includes a shift register to which printing data and selection data for selecting preheating pulse signals are applied as inputs, a latch circuit for latching the printing data, a selection-data latch circuit for latching the selection data, a selection circuit for selecting any one of a plurality of preheating pulse signals inputted in accordance with the latched selection data, and a plurality of heating resistors driven by the printing data or preheating pulse signals. Correction data, obtained by a head correcting apparatus, for performing printing at an average density by correcting the characteristics of each heater board is stored in a memory of the printing head. A printing apparatus decides the selection data in accordance with the correction data and sets the selection data in the selection-data latch circuit.

Developing roller, developing device, and image forming apparatus including developing device

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. A resin coat layer has been formed on an outer circumferential surface of the roller main body, the resin coat layer being made of a resin material having electric conductivity. A product of resistance component Rs [] and electrostatic capacitance component Cs [F] in AC impedance Z of the roller main body is in a range from 2.79×107 to 6.77×105, the AC impedance Z being obtained when an AC voltage of a predetermined frequency f is applied.

DEVELOPING ROLLER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING DEVELOPING DEVICE

A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes a resin coat layer that is formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being made of a resin material and having electric conductivity. An AC impedance Z obtained from an application of an AC voltage at a frequency in a range from 0.05 Hz to 100 Hz is equal to or higher than 100Ω, and a phase angle θ satisfies a relationship of 0 rad<θ<0.1 rad when a power factor is cos θ=Za/Z.

Developing device allowing selection of a stirring/conveying member to be used from a plurality of types of stirring/conveying members with rotary shafts with different shaft-diameters and image forming apparatus therewith

A developing device includes a developer container, a developer carrier, and a stirring/conveying member. The developer container stores developer containing toner. The developer carrier carries on its surface the toner in the developer container. The stirring/conveying member includes a rotary shaft rotatably supported on the developer container and a stirring blade formed around the outer circumferential face of the rotary shaft and stirs and conveys the developer in the developer container. The stirring/conveying member to be used can be selected from a plurality of types of stirring/conveying members with rotary shafts with different shaft diameters.

Developing device that removes toner accumulated on top surface of regulating blade with simple configuration, and image forming apparatus including the same

A developing device includes a developing roller, a toner supply roller, a regulating blade, a casing, and a cleaning member. The developing roller supplies a toner to the image carrier in a region opposed to an image carrier. The toner supply roller is located opposed to the developing roller. The toner supply roller forms a magnetic brush made of a two-component developer including a magnetic carrier and a toner on an outer peripheral surface to supply a toner to the developing roller in a region opposed to the developing roller. The regulating blade is located opposed to the toner supply roller at a predetermined interval. The casing houses the developing roller, the toner supply roller, and the regulating blade. The cleaning member reciprocates along a longitudinal direction of the regulating blade so as to remove a toner accumulated on a top surface of the regulating blade.

Ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

An ink-jet ink cartridge having an ink containing portion for containing the ink to be supplied to an ink-jet head, and a lid for covering the ink containing portion, characterized in that a wall of the ink containing portion and one face of the lid are welded together owing to frictional heat by vibration.

Image forming apparatus

The neutralization units 12 a and 12 b are arranged between the primary transfer positions and the cleaning units 11 a and 11 b , and, irradiate a region on the image supporting body 2 a with first neutralization light 131 , the regions spanning from a position facing the primary transfer position to a position facing the cleaning unit 11 a . The neutralization units 12 a and 12 b irradiate a region on the image supporting body 2 b with second neutralization light 132 , the region spanning from a position facing the developing unit 16 b to a position facing the primary transfer position. The neutralization units 12 a and 12 b include a first reflective part and a second reflective part provided at different positions on a side face of the light guiding body. The first reflective part forms the light 131 and the second reflective part forms the light 132 by reflecting the light from the neutralization light source.

Developing device and image forming apparatus

A developing device includes a developing container, a first stirring member and a second stirring member, and a developing roller. The developing container includes a first stirring chamber, a second stirring chamber, and a communication portion. The first stirring member includes a reverse spiral vane that conveys a developer in a direction reverse to a circulation direction. An air discharge duct is formed on a wall portion of the first stirring chamber opposed to the reverse spiral vane and in an area excluding the communication portion and discharges air from the first stirring chamber to an outside of the developing container via an air discharge port at a distal end of the air discharge duct. A filtration portion is disposed in the air discharge duct adjacently to the air discharge port and restricts leakage of the developer through the air discharge port.

CLEANING DEVICE AND IMAGE FORMING APPARATUS THEREWITH

A cleaning device has a housing where an opening and a toner storage portion are formed, a cleaning member arranged in the opening, a collection roller collecting toner attached to the cleaning member, a blade scraping off toner attached to the collection roller, a sheet member dividing between the toner storage portion and the opening, and a sealing member arranged to be in contact with the housing and both end parts of the outer circumferential surface of the collection roller in the axial direction. A first region having a predetermined surface roughness is formed in a middle part of the circumferential surface of the collection roller in the axial direction, and a second region having a lower surface roughness than the first region is formed next to both end parts of the first region in the axial direction. 1. (canceled)2. A cleaning device , comprising ,a housing that is formed thereinan opening facing an image carrying member carrying a toner image anda toner storage portion storing toner removed from a surface of the image carrying membera cleaning member that is arranged at a position opposite the image carrying member:a collection roller that collects toner attached to the cleaning member;a blade that scrapes off toner attached to the collection roller while in contact with the collection roller on a downstream side of the cleaning member with respect to a rotation direction of the collection roller;a sheet member that is arranged over an entire range of the collection roller in a longitudinal direction thereof on the downstream side of the cleaning member and on an upstream of the blade with respect to the rotation direction of the collection roller so as to divide between the toner storage portion and the opening; anda sealing member that is arranged so as to be in contact with the housing and both end parts of a circumferential surface of the collection roller in an axial direction and that prevents toner from leaking out of a gap between the housing and ...

IMAGE FORMING APPARATUS

The exposing unit emits a pair of light beams deflected to reverse scanning directions each other by a rotary polyhedron. The pattern creation unit creates color misregistration detection patterns on the transfer unit by the toner image in a reference color formed by a light beam emitted from an exposing unit and the toner image in an adjustment color formed by the other light beam having a different scanning direction. The color misregistration collection unit, on the basis of the image forming position of the toner image in the reference color, moves an image forming position of the toner image in each color formed by the light beam having the scanning direction opposite to the light beam corresponding to the reference color according to the color misregistration adjustment amount detected by the adjustment amount detection unit. 1. An image forming apparatus configured to form an image by overlaying images formed separately for every color , the apparatus comprising;an exposing unit configured to emit a pair of light beams that are deflected to reverse scanning directions each other by a rotary polyhedron;image carriers disposed for every color and corresponding to respective light beams emitted from the plural exposing units, and each image carrier having an image carrier surface on which the corresponding light beam forms a latent image;developing units configured to form toner images corresponding to the latent images by sticking the toner onto the latent images on the image carrying surfaces;a transfer unit configured to transfer thereon the toner images carried by the image carrying surfaces of the image carriers;a pattern creation unit configured to create color misregistration detection patterns on the transfer unit by the toner image in a reference color formed by a light beam emitted from an exposing unit and the toner image in an adjustment color formed by the other light beam having a different scanning direction from the light beam emitted from the ...

Bus acuisition controller

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

Microprogram control computer

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

Ink jet head, ink jet head cartridge and ink jet apparatus

An ink jet head includes a plurality of liquid flow paths for ejecting the ink; and a plurality of heat generating resistors for the respective liquid flow paths, the heat generating resistor being independently drivable; wherein adjacent ones of the heat generating resistors are spaced by not more than 8 microns.

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head. There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent from the heating resistor elements and the function element, and has a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement resistor.

Substrate for thermal recording head, ink jet recording headusing the substrate, recording apparatus with the recording head, and method of driving recording head

Ink jet recording apparatus

A driving voltage of a discharging heater in an ink jet recording head is set according to property of the individual recording head. More specifically, sub-heaters are formed on a board on which discharging heaters are formed, by a same process as that for the discharging heaters. Resistance values of the sub-heaters are read so that the driving voltage of the discharging heaters can be set on the basis of the read resistance values.

Ink tank package container having a seal member

An ink tank package container includes a first receiver for receiving an ink tank having an atmosphere communication opening and an ink supply port, a second receiver for receiving the first receiver, the second receiver having an opening portion, and at least one seal member for sealing the atmosphere communication and the ink supply port, a part of the seal member being exposed through the opening portion of the second receiver. The atmosphere communication and ink supply port are unsealed by pulling out the exposed part of the seal member.

Substrate for Thermal Recording Head, Ink Jet Recording Head Using the Substrate, Recording Apparatus with the Recording Head, and Method of Driving Recording Head

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head. There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent from the heating resistor elements and the function element, and has a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement resistor.

Ink container and manufacturing method for the same

An ink container includes an ink absorbing material accommodating chamber for accommodating an ink absorbing material for retaining ink to be supplied to a recording head; an ink supply opening connectable with said recording head to supply the ink to the recording head from said accommodating chamber; an air vent portion for fluid communication between said accommodating chamber with ambience; wherein said air vent portion has an inside opening in fluid communication with an inside of said accommodating chamber, an outside opening open to the ambience, and a fluid communication path in fluid communication with said inside opening and outside opening; wherein said outside opening takes, when said container is mounted on an apparatus with which it is usable, a position lower than that taken by said inside opening.

Ink jet recording head and method for recording gradation by using the same

(57)【要約】 【課題】 １ノズル内に複数の発熱抵抗体を持つヘッド において、吐出効率の向上、高階調、高画質記録を行 う。 【解決手段】 １つの液路３１に吐出ヒータが複数設け られたインクジェットヘッドにおいて、複数の吐出ヒー タ２Ａ，２Ｂと、この吐出ヒータ２に接続された電極３ Ａ，３Ｂ，３Ｃ，３Ｄとで電気熱変換素子を構成し、吐 出ヒータ２Ａの端部と吐出ヒータ２Ｂの端部までの距離 を１６μｍ以下とする。

Ink supply mechanism provided with ink jet cartridge and ink jet recording device

An ink cartridge and a method for sealing an aperture provided for such cartridge

An ink cartridge for ink jet use is provided with an aperture for filling in the cartridge with ink. The circumference of the aperture and a part of a plug pressed in the aperture are fused and welded to be formed integrally to airtightly close the aperture, and obtain an integrated structure without any interface. Hence, it is made possible to reliably prevent ink from leaking therefrom, even if some scratches and cracks are present on both of them. This contributes to eliminating inspection steps to find ink leakage in the course of manufacture, and also, contributes to improving the yield of production. As a result, a significant reduction of costs is possible, while enhancing the reliability of the ink cartridge.

Image forming apparatus

【課題】像担持体と、前記像担持体の周面に対向して配置された帯電部材を介して該周面を所定電位に帯電させる帯電装置と、像担持体の周面に静電潜像を形成する露光装置と、前記静電潜像を前記トナー像として現像する現像装置と、前記トナー像を被転写材に転写させる転写器と、転写後の像担持体の周面の電位を除電する除電装置と、を備えた画像形成装置において、現像剤の劣化に伴うトナーの飛散を安価に且つスペース効率良く防止することにある。【解決手段】画像形成装置は、除電装置５０の導光体５２における光源５１側とは反対側の端面に対向して配置され、該端面からの光を受光するとともに受光量に応じた信号を出力する受光センサー６１を有している。制御部は、受光センサー６１の出力信号を基に、導光体５２の前記反対側の端面からの光の受光量が所定量未満となる条件が成立するか否かを判定し、該条件が成立すると判定した場合にはトナー飛散低減制御を実行する。【選択図】図５

Ink jet head and ink jet device provided with this head

Development device and image formation apparatus having the same

【課題】現像剤排出機構を備えた現像装置において、現像容器内の現像剤体積を一定に維持可能な現像装置およびそれを備えた画像形成装置を提供する。【解決手段】現像装置は、現像容器と、第１攪拌搬送部材と、第２攪拌搬送部材と、現像剤補給口と、現像剤排出部と、現像剤担持体と、制御部と、嵩検知センサーと、を備える。現像容器は、第１搬送室と、仕切り部を挟んで第１搬送室と並列に配置される第２搬送室と、を有し、キャリアとトナーとを含む現像剤を収容する。現像剤排出部は、現像容器から余剰の現像剤を排出する。透磁率センサーは、第１搬送室に配置され、第１搬送室内の現像剤の透磁率を検知する。制御部は、嵩検知センサーの出力値に基づいて第１搬送室内の現像剤体積を推測し、推測された現像剤体積に応じて現像剤排出部からの現像剤排出量を調整する。【選択図】図５

Ink container and manufacturing method for the same

An ink container (1) includes an ink absorbing material accommodating chamber (3) for accommodating an ink absorbing material (7) for retaining ink to be supplied to a recording head; an ink supply opening (5) connectable with said recording head to supply the ink to the recording head from said accommodating chamber (3); an air vent portion for fluid communication between said accommodating chamber (3) with ambience; wherein said air vent portion has an inside opening (6a) in fluid communication with an inside of said accommodating chamber (3), an outside opening (6b) open to the ambience, and a fluid communication path (6c) in fluid communication with said inside opening (6a) and outside opening (6b); wherein said outside opening (6b) takes, when said container is mounted on an apparatus with which it is usable, a position lower than that taken by said inside opening.

Ink jet head, ink jet cartridge with this head and ink jet device with this cartridge

Memory circuit

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

Image forming apparatus

(57)【要約】 【課題】 現像ゴーストとキャリア飛散を起こさず確実 に帯電されたトナーを現像ロールに供給し、現像装置を 複雑にすることなく連続現像時の画質安定性を確保し て、長期間安定した画像品質が得られる小型のハイブリ ッド型現像装置を有する画像形成装置を提供する。 【解決手段】 磁気ロールを導電性とし、現像剤を構成 するキャリアを５Ｋエルステッドの印加磁場において飽 和磁化値が４５ｅｍｕ／ｇ以下で平均粒径が４５μｍ以 下の高抵抗絶縁キャリアで形成すると共に、磁気ロール と現像ロール間のギャップを５００μｍ以下とし、磁気 ロール側に印加された搬送バイアスをＤＣ電源としてバ イアスと磁化力を効果的に組み合わせて、現像装置を複 雑にすることなく現像ゴーストとキャリア飛散を防止 し、連続現像時の画質安定性を確保して長期間安定した 画像品質が得られるようにした。

Ink jet head, ink jet head cartridge and ink jet apparatus

Ink cartridge and method for sealing an opening on this cartridge

Ink container and manufacturing method for the same

Electrophotographic imaging process

Ink tank for printer

Substrate for thermal recording head, ink jet recording head using the substrate, recording apparatus with the recording head, and method of driving recording head

This invention has as its object to provide a substrate for an ink jet recording head, which is compact and can realize stable recording with high reliability, a recording head using the substrate, a recording apparatus mounting the recording head, and a method of driving the recording head. There are disclosed a substrate for a thermal recording head, having a plurality of heating resistor elements, a plurality of wiring electrodes for supplying driving signals to the heating resistor elements, a function element, electrically connected to the heating resistor elements, for selectively driving the plurality of heating resistor elements, and a measurement resistor element which is electrically independent from the heating resistor elements and the function element, and has a resistance value larger than that of each heating resistor element, an ink jet head, a head cartridge, and a recording apparatus utilizing the substrate, and a method of driving a recording head using a measurement resistor.

An ink tank cartridge, a manufacturing method thereof and a packaging structure of the ink tank cartridge

Clipping device

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

Ink container.

Un recipiente de tinta incluye una cámara que acomoda material absorbente de tinta para acomodar un material absorbente de tinta para retener tinta que será suministrada a un cabezal registrador; una abertura de suministro de tinta conectable con el cabezal registrador para suministrar la tinta al cabezal registrador desde la cámara acomodadora; un agujero de ventilacion para la comunicacion fluida entre la cámara acomodadora y el medio ambiente; en donde la porcion de agujero de ventilacion tiene una abertura interior en comunicacion fluida con el interior de la cámara acomodadora, una abertura exterior abierta al medio ambiente, y una ruta de comunicacion de fluidos en comunicacion fluida con la abertura interior y la abertura exterior; en donde la abertura exterior toma, cuando el recipiente se monta en un aparato en el cual es utilizable, una posicion inferior a la tomada por la abertura interior.

Ink jet head and ink jet device provided with this head

Carrier for electrophotography, process for production of the carrier and developing agent for electrophotography using the carrier

An electrophotographic carrier, which has high charging characteristics and an excellent durability, does not dull a color image and has an excellent moisture resistance is provided. A process for the production of the carrier and a developing agent for electrophotography using the carrier are also provided. The electrophotographic carrier comprises a carrier core material provided with magnetism and a coating layer formed on the surface of the carrier core material, the coating layer containing at least a hydrophobic white conductive material and a high molecular weight polyethylene resin.

Clipping circuit

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

Ink jet head, ink jet head cartridge and ink jet apparatus

An ink jet head includes a plurality of liquid flow paths for ejecting the ink; and a plurality of heat generating resistors for the respective liquid flow paths, the heat generating resistor being independently drivable; wherein adjacent ones of the heat generating resistors are spaced by not more than 8 microns.

Tintenbehälterverpackung

Farbstrahldrucker

入出力バツフア制御装置

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

現像装置およびそれを備えた画像形成装置

【課題】現像剤搬送室が上下に配置された現像装置の下方の搬送室から上方の搬送室へ現像剤を簡易な構成で円滑に汲み上げ可能な現像装置およびそれを備えた画像形成装置を提供する。【解決手段】現像装置は、第１搬送室と、第１搬送室の上方に配置される第２搬送室と、を有する現像容器と、第１搬送室内の現像剤を第１方向に攪拌搬送する第１攪拌搬送部材と、第２搬送室内の現像剤を第１方向と逆方向である第２方向に攪拌搬送する第２攪拌搬送部材と、現像剤担持体と、を備える。第１搬送室および第２搬送室の第１方向の下流側端部同士を連通する第１連通部は、第１攪拌搬送部材の軸方向と直交する現像容器の幅方向において、第１攪拌搬送部材の回転によって現像剤が下から上へ移動する側、且つ第２攪拌搬送部材の回転によって現像剤が下から上へ移動する側の仕切り部の端部に形成される。【選択図】図３

ドラムヒーターを使用しない電子写真システム

(57)【要約】 【課題】 ａ−Ｓｉドラムを搭載した複写機・プリンタ ーにおいてドラムヒ−タを使用しなくても、高温高湿条 件下で画像流れのない鮮明な画像を得る。 【解決手段】 アモルファスシリコン感光体を用いた電 子写真システムにおいて、形状係数ＳＦ１（丸さの度合 い）が３００以下、かつＳＦ２（凹凸の度合い）が２５ ０以下であるトナー原粉に対して、研磨クリーニング剤 及びシリカ微粉末を外添した静電潜像現像用トナーを用 い、当該トナーと、研磨クリーニング剤粒子とを共に現 像した後、トナーの転写工程において、トナーと、研磨 クリーニング剤粒子とを分離させるとともに、ドラムヒ ーターを使用しないことを特徴とする。

Tintenbehälter und verfahren zu dessen herstellung

画像形成装置

【課題】コストアップが抑制された構成で、現像容器の外部への現像剤の飛散を抑制することが可能な画像形成装置を提供する。【解決手段】画像形成装置は、現像部と、現像剤搬送部と、コンテナと、排気口７１と、濾過部７２と、を備える。現像剤搬送部は、現像部に接続され、トナーを含む現像剤を現像部に搬送する。コンテナは、現像部に補給する現像剤を収容する。第１攪拌部材４５は、現像容器の内部に回転可能に支持され、現像剤を攪拌しながら搬送する。排気口７１は、コンテナから第１攪拌部材４５まで延びる現像剤補給経路Ｒｄの、コンテナと現像剤搬送部との接続部よりも現像剤補給方向の下流側であって、第１攪拌部材４５よりも上流側に形成され、現像剤補給経路Ｒｄから外部に空気を排出する。濾過部７２は、排気口７１に隣接して配置され、排気口７１からの現像剤の漏出を規制する。【選択図】図４

現像装置及び画像形成装置

【課題】コストアップが抑制された構成で、現像容器の外部への現像剤の飛散を抑制することが可能な現像装置を提供する。【解決手段】現像装置４０は、現像容器４１と、現像ローラー４７と、規制ブレード４８と、を備える。現像ローラー４７は、感光体ドラムと対向する現像領域において感光体ドラムにトナーを供給する。規制ブレード４８は、現像領域の、現像ローラー４７の回転方向上流側に配置され、現像ローラー４７が担持する現像剤の層厚を規制する。排気部６１は、規制ブレード４８の、現像ローラー４７の回転方向上流側の側面４８１と、側面４８１と対向する現像容器４１の壁部４１１との間に形成され、先端部に開口する排気口６１１を介して現像容器４１の内部から外部に空気を排気する。濾過部６２は、排気口６１１に隣接して排気部６１内に配置され、排気口６１１からの現像剤の漏出を規制する。【選択図】図４

Aufzeichnungskopf und -gerät zur Kontaktsdetektion

情報統合配信システム

(57)【要約】 【課題】 同一種類又は異なった種類の複数の固有通信 網を利用して行われる各種の情報提供サービスを、利用 者がインターネット通信網を介していずれの固有通信網 に対しても自由にアクセスして利用可能とする。 【解決手段】 利用者に対して情報提供サービスを行う 同一種類又は異なった種類の複数の固有通信網１ａ，１ ｂと、利用者がインターネット接続機器７，８を用いて インターネット上で情報を通信するインターネット通信 網２とを、上記複数の固有通信網１ａ，１ｂからの情報 を取り込んで処理し該情報をインターネット通信網２へ 提供する情報取込提供インターフェース３で接続したも のである。これにより、同一種類又は異なった種類の複 数の固有通信網を利用して行われる各種の情報提供サー ビスを、利用者がインターネット通信網２を介していず れの固有通信網に対しても自由にアクセスして利用可能 とすることができる。

現像装置、画像形成装置

【課題】磁気ローラーに形成された磁気ブラシにおける現像ローラーへのリークの発生を抑制することが可能な現像装置及びこれを備えた画像形成装置を提供する。 【解決手段】現像装置４１は、磁気ローラー６２と、その上方に設けられた現像ローラー６３とを備える。現像ローラー６３は、感光体ドラム１１の外周面に非接触で対向配置されている。磁気ローラー６２は、現像ローラー６３の外周面に非接触で対向配置され、トナー及び磁性キャリアからなる磁気ブラシによって現像ローラー６３の表面にトナー層を形成する。磁気ローラー６２と現像ローラー６３との間に所定の電圧が印加される。現像ローラー６３の体積抵抗値は磁気ローラー６２の体積抵抗値よりも大きく設定されており、且つ、現像ローラー６３の体積抵抗値は１．０×１０ １０ Ω〜１．０×１０ １１ Ωの範囲内に設定されている。 【選択図】図５

現像装置及び画像形成装置

【課題】小型で長寿命化が図られた構成で、現像剤を十分に攪拌して濃度むらの発生を防止することが可能な現像装置を提供する。【解決手段】現像装置４０は、現像容器４１と、現像ローラー４７と、規制ブレード４８と、第２攪拌部材４６と、を備える。規制ブレード４８及び第２攪拌部材４６は、現像ローラー４７の中心４７ｃよりも下方に配置される。現像ローラー４７の外径Ｄｄは、第２攪拌部材４６の外径Ｄｍよりも小さい。現像ローラー４７の半径をＲｄとし、第２攪拌部材４６の半径をＲｍとし、現像ローラー４７と第２攪拌部材４６との間の距離をＤ１とし、現像ローラー４７の中心４７ｃと第２攪拌部材４６の中心４６ｃとを結ぶ直線Ｌ１が垂線Ｌｐに対してなす角をθｄとした場合に、θｄ≦ａｒｃｓｉｎ（Ｒｄ／（Ｒｄ＋Ｄ１＋Ｒｍ））の関係を満たす。【選択図】図３

ＦｉＦｏメモリ制御装置

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

Developing device and image forming apparatus therewith

A developing device includes a developer container, a developer carrier, and a stirring/conveying member. The developer container stores developer containing toner. The developer carrier carries on its surface the toner in the developer container. The stirring/conveying member includes a rotary shaft rotatably supported on the developer container and a stirring blade formed around the outer circumferential face of the rotary shaft and stirs and conveys the developer in the developer container. The stirring/conveying member to be used can be selected from a plurality of types of stirring/conveying members with rotary shafts with different shaft diameters.

現像装置およびそれを備えた画像形成装置

【課題】現像剤搬送室が上下に配置された現像装置の下方の搬送室から上方の搬送室へ現像剤を簡易な構成で円滑に汲み上げ可能な現像装置およびそれを備えた画像形成装置を提供する。【解決手段】現像装置は、第１搬送室と、第１搬送室の上方に配置される第２搬送室と、を有する現像容器と、第１搬送室内の現像剤を第１方向に攪拌搬送する第１攪拌搬送部材と、第２搬送室内の現像剤を第１方向と逆方向である第２方向に攪拌搬送する第２攪拌搬送部材と、現像剤担持体と、を備える。現像容器は、第１搬送室および第２搬送室の第１方向の下流側端部同士を連通する第１連通部と、第１搬送室および第２搬送室の第２方向の下流側端部同士を連通する第２連通部と、を有する。第１攪拌搬送部材は、回転軸と、回転軸の軸方向に一定のピッチで螺旋状に形成される第１螺旋羽根とを有する。第１攪拌搬送部材の第１連通部と対向する部分には、回転軸の外径が他の部分に比べて大きい大径部が形成される。【選択図】図３

ごみ処理施設

(57)【要約】 【課題】 全体的な建設敷地面積を小さくする。 【解決手段】 ごみピット４にごみ３を投入するための 投入扉６を備えたごみ投入口５の前側に、シャッター２ ０を備えた出入口１９を有する前側壁２１と左右の側壁 ２２と天井壁２６により内部に停車スペース１１を備え た個室として形成してある収容室１８を、各ごみ投入口 ５毎に個別に設ける。出入口１９直前にシャッター開閉 用ループコイル２３を埋設する。収容室１８内部のごみ 投入口５直前に投入扉開閉用ループコイル２４を埋設す る。出入口１９上方の前側壁１ａ面に、ごみ収集車２が 収容状態か否かを表示する表示ランプ２５を設ける。ご み収集車２によりごみ３を搬送する際は、収容室１８に ごみ収集車２をバックで接近させ、シャッター２０が開 放されたら内部に乗り入れ、シャッター２０が閉塞し、 投入扉６が開放されたら、ごみ投入口５を通してごみピ ット４へごみ３を払い出させる。

現像装置

【課題】安価な構成でトナーの掻き取りを効率的に行うことができる現像装置を提供する。 【解決手段】現像装置５は、磁気ロール５２上にキャリア７からなる磁気ブラシ７１を形成し、この磁気ブラシ７１によって、現像ロール５１上にトナー６の層６１を形成するとともに現像ロール５１から感光体ドラム３１に移行せずに現像ロール５１上に残存するトナー６を掻き取るものである。この現像装置５において、現像ロール５１を、当該現像ロール５１が回転するのに伴って軸方向に往復移動するように構成した。 【選択図】図２

現像ローラー、現像装置、及び現像装置を備えた画像形成装置

【課題】ばらつきのない安定した絶縁性能を確保することができる現像ローラー、これを備えた現像装置及び画像形成装置を実現する。【解決手段】現像装置４１は、磁気ローラー６２と、その上方に設けられた現像ローラー６３とを備える。現像ローラー６３は、ローラー本体を構成する現像スリーブ６３Ａを有する。現像スリーブ６３Ａは、基体８１の外周面にベーマイト層８２が形成され、更にその表面に導電性を有する樹脂コート８３が形成されている。ベーマイト層８２を有する現像スリーブ６３Ａは、アルマイト層を有するものに比べて、リーク発生電圧のばらつきが小さく、絶縁性能が良好である。【選択図】図５

現像装置

【課題】現像スリーブ３０の両端部からのキャリアもしくはトナーの漏出を確実に防止すること。 【解決手段】現像スリーブ３０の両端部の外周面に対向するようハウジング４に配設された一対の磁気シール体１００を備え、磁気シール体１００の各々は、磁性板部材４０と永久磁石５０とからなる現像装置２。磁性板部材４０は、現像スリーブ３０の外周面に対向する円弧面４２ａと、現像スリーブ３０の軸方向に対して直交しかつ該軸方向に相互に対向する内側面４０Ａとを備えている。永久磁石５０は、対応する磁性板部材４０の内側面４０Ａに配設されかつ円弧面５２ａを備え、円弧面５２ａは、対応する磁性板部材４０の円弧面４２ａに対し、半径方向外方に一定の距離ｄだけ後退して位置付けられる。 【選択図】 図１

現像ローラー、現像装置、及び現像装置を備えた画像形成装置

【課題】絶縁性能のばらつきやリークの発生を抑制するとともに、非接触によるトナーの現像性が良好な現像ローラー、及びこれを備えた現像装置及び画像形成装置を提供する。 【解決手段】現像装置４１は、磁気ローラー６２と、その上方に設けられた現像ローラー６３とを備える。現像ローラー６３は、ローラー本体を構成する現像スリーブ６３Ａを有する。現像スリーブ６３Ａは、基体８１の外周面に直接にナイロン樹脂からなる導電性を有する樹脂コート層８３が形成されている。樹脂コート層８３を含む現像スリーブ６３Ａに周波数０．０５Ｈｚ〜１００Ｈｚの交流電圧を印加して得られる交流インピーダンスをＺ、その抵抗成分をＺａ、力率をｃｏｓθとしたときに、現像スリーブＺ＞１００Ω、且つ、０ｒａｄ＜θ＜０．１ｒａｄを満たす。 【選択図】図５

Aufzeichnungskopf und -gerät zur Kontaktsdetektion

画像形成装置

(57)【要約】 【課題】 現像を行っている現像装置以外の現像装置か ら現像剤が混入するのを防止するとともに磁気ブラシの 搬送及び遮断性能を良好にする。 【解決手段】 画像形成装置に備えられた現像装置は感 光体ドラム１に対面配置され、複数の永久磁石を有する 固定マグネットローラ２０を内包する回転スリーブ２１ を有しており、固定スリーブ２２が回転スリーブと外周 同士を所定間隙有して、回転スリーブの回転方向上流側 に配置されている。可動マグネット２３は固定スリーブ 内に配置され、現像時に位置する第１停止位置と非現像 時に位置する第２停止位置との間を回動可能な１極以上 を有している。固定マグネットローラの第１極は固定ス リーブと回転スリーブとの最近接点を挟んで、回転スリ ーブ内の現像位置側に配置され、その第２極は反現像位 置側に配置されている。そして、キャリア及びトナーを 含む現像剤の密度に対する飽和磁化が４０〜１６０ｅｍ ｕ／ｃｍ ３ の範囲とされる。

現像装置及び画像形成装置

【課題】ハイブリッド方式の現像装置において、画像形成開始直後において感光体ドラムへのトナー供給量が減少することを低減することができる現像装置、および画像形成開始直後において画像濃度が薄くなることを低減することができる画像形成装置を提供する。 【解決手段】現像ロール１２を回転させる回転駆動部と、磁気ロール１１からトナー１３を現像ロール１２上に飛翔させるべく磁気ロール１１に直流電圧Ｖｄｃ１と交流電圧Ｖａｃ１とを重畳して印加する直流電圧源１８及び交流電圧源１７と、直流電圧源１８及び交流電圧源１７により直流電圧Ｖｄｃ１と交流電圧Ｖａｃ１とが印加された後、現像ロール１２の周面からトナー１３を感光体ドラム３１の周面に飛翔させるべく現像ロール１２に直流電圧Ｖｄｃ２と交流電圧Ｖａｃ２とを重畳して印加する直流電圧源１８及び交流電圧源１９とを備えた。 【選択図】図２

静電潜像現像用トナーの製造方法

(57)【要約】 【課題】 ａ−Ｓｉドラムを搭載した複写機・プリンタ ーにおいてドラムヒ−タを使用しなくても、高温高湿条 件下で画像流れのない鮮明な画像を得る。 【解決手段】 アモルファスシリコン感光体を用いた電 子写真システムに使用される静電潜像現像用トナーの製 造方法において、形状係数ＳＦ１（丸さの度合い）が３ ００以下、かつＳＦ２（凹凸の度合い）が２５０以下で あって、機械式粉砕機を用いてなるトナー原粉に対し て、研磨クリーニング剤及びシリカ微粉末を外添する。

画像形成装置

【課題】 長時間のウオームアップを必要とせず、且つトナー過帯電による現像ユニット内のトナー劣化を効果的に防止するカラー画像形成装置を提供する。 【解決手段】 画像形成が開始されると、各色の印字率Ｐｃ、Ｐｍ、Ｐｙ及びＰｂを算出する。シアンの印字率Ｐｃ＝０％である場合は、現像ユニット内の現像ローラに印加される直流バイアスＶｄｃ１、交流バイアスＶａｃ、及び磁気ローラに印加される直流バイアスＶｄｃ２を遮断してエージング動作のみを行い、Ｐｃ＝０％でない場合は、直流バイアスＶｄｃ１、Ｖｄｃ２及び交流バイアスＶａｃを印加した状態で現像ユニットを駆動し、シアンのトナー像を現像する。以下、マゼンタ、イエロー、ブラックの印字率Ｐｍ、Ｐｙ及びＰｂが０％であるか否かが順次判断され、それぞれシアンの場合と同様に直流バイアスＶｄｃ１、Ｖｄｃ２及び交流バイアスＶａｃを制御して現像ユニットを駆動する。 【選択図】 図３

煙突の可動蓋装置

(57)【要約】 【課題】 運転停止時の如き不使用時に、大きく張り出 すことなく、内筒の頂部開口を閉塞して雨水の浸入を確 実に防止する。 【解決手段】 内筒３の頂部開口３ａを挟んでドラム６ とリール９を対向させて配置する。内筒３の頂部開口３ ａを水平方向に開閉するシャッター状の蓋１１を設け る。蓋１１の一端をドラム６に取り付けて巻き取れるよ うにし、蓋１１の他端に接続した索１２をリール９に巻 き取らせる。ドラム６から繰り出して展張させるときの 蓋１１の幅サイド部と係合してガイドするガイドレール ２３を水平に設ける。

クリーニング装置およびそれを備えた画像形成装置

【課題】シール部材のシール性が低下するのを抑制しながら、シール部材と回収ローラーとの接触部分でトナーや紙粉が詰まるのを抑制することが可能なクリーニング装置およびそれを備えた画像形成装置を提供する。【解決手段】ベルトクリーニングユニット（クリーニング装置）１９は、廃トナー収容部４０ｂが形成されたハウジング４０と、廃トナーを回収する回収ローラー４３と、クリーニングブレード４５と、回収ローラー４３に接触して配置され、廃トナー収容部４０ｂから開口部４０ａ側への廃トナーの逆流を抑制するシール部材５０と、を備える。回収ローラー４３は、回転中心Ｏから外周面までの距離が最も小さい最小半径Ｒｍｉｎと、回転中心Ｏから外周面までの距離が最も大きい最大半径Ｒｍａｘと、を有する。【選択図】図３

クリーニング装置およびそれを備えた画像形成装置

【課題】シール部材のシール性が低下するのを抑制しながら、シール部材と回収ローラーとの接触部分でトナーや紙粉が詰まるのを抑制することが可能なクリーニング装置およびそれを備えた画像形成装置を提供する。 【解決手段】ベルトクリーニングユニット（クリーニング装置）１９は、廃トナー収容部４０ｂが形成されたハウジング４０と、廃トナーを回収する回収ローラー４３と、クリーニングブレード４５と、回収ローラー４３に接触して配置され、廃トナー収容部４０ｂから開口部４０ａ側への廃トナーの逆流を抑制するシール部材５０と、を備える。回収ローラー４３は、軸方向から見て長径ＤＬと短径ＤＳとを有する形状に形成されている。 【選択図】図３

電子写真用キャリア、電子写真用キャリアの製造方法および電子写真用キャリアを用いた電子写真用現像剤

(57)【要約】 【課題】 耐久性、耐スペント性に優れ、帯電量の調整 が容易であり、しかも帯電制御のために添加する磁性粉 の影響を受けづらい電子写真用キャリア、その製造方法 およびそれを用いた電子写真用現像剤を提供する。 【解決手段】 磁性を備えたキャリア芯材と、当該キャ リア芯材の表面を被覆する高分子量ポリエチレン樹脂か らなる被覆層とを有する電子写真用キャリアにおいて、 被覆層に磁性粉を埋設するとともに、当該磁性粉を被覆 するように表面ポリエチレン被覆層を形成してある。

絶縁化表面処理金属粒子

(57)【要約】 【課題】 大きな金属粒比率と高い絶縁性の双方を実現 する。電子写真法によりグリーンシート上に導体パター ンを形成するトナーとして利用した場合には、高い絶縁 性によって均一な帯電が可能となることにより大きな精 度で導体パターンを印刷、形成でき、焼成後には良好な 導通を有し信頼性の高い導体パターンを形成できる。 【解決手段】 金属粒の表面が熱可塑性絶縁物により被 覆されて絶縁化され、平均粒径が２〜２０μｍの範囲に ある絶縁化表面処理金属粒子。

Tintenvorratspatrone, verfahren zu ihrer herstellung und verpackungsstruktur der tintenvorratspatrone

現像装置

【課題】 二成分現像剤を用い、現像剤担持体の線速が切り換え可能である現像装置において、簡単にしかも精度よくトナー濃度を制御できるようにする。 【解決手段】 トナー濃度センサ３１によって現像容器１１中のトナー濃度を検出して検出トナー濃度を得て、検出トナー濃度とトナー濃度閾値とに応じて現像容器へのトナー補給制御が行われる。この際、予め定められた基準線速と異なる線速に現像ローラ１５の線速が変更された際、基準線速に対応する検出トナー濃度と変更後の線速に対応する検出トナー濃度とに基づいてトナー濃度閾値を変更して変更トナー濃度閾値を得、この変更トナー濃度閾値をトナー濃度閾値として用いる。 【選択図】 図２

デンプン老化防止剤及びデンプン老化防止方法

【課題】デンプン含有食品のデンプンの老化を遅延させるデンプン老化防止剤を提供することを課題とする。 【解決手段】ポルフィラン又はポルフィランを含む海苔処理物を有効成分として含有してなるデンプン老化防止剤により、上記の課題を解決する。 【選択図】なし

現像装置及びそれを備えた画像形成装置

【課題】トナーの流動性に係わらず規制ブレードの上面に堆積したトナーを簡易な構成で除去できる現像装置及びそれを備えた画像形成装置を提供する。【解決手段】現像装置は、現像ローラーと、トナー供給ローラーと、規制ブレードと、ケーシングと、清掃部材と、を備える。現像ローラーは、像担持体と対向して配置され、像担持体との対向領域において像担持体にトナーを供給する。トナー供給ローラーは、現像ローラーと対向して配置され、外周面に二成分現像剤により磁気ブラシを形成して現像ローラーとの対向領域において現像ローラーにトナーを供給する。規制ブレードは、トナー供給ローラーに所定の間隔を隔てて対向配置される。ケーシングは、現像ローラー、トナー供給ローラー、及び規制ブレードを収容する。清掃部材は、規制ブレードの長手方向に沿って往復移動することにより規制ブレードの上面に堆積したトナーを除去する。【選択図】図２

画像形成装置

【課題】専用のセンサーを追加することなく簡易に、像担持体の摩耗の程度を精確に算出できること。【解決手段】制御部は、帯電部の状態を、非電圧印加状態およびそれぞれ異なる帯電電圧が印加される複数の電圧印加状態を含む複数の状態に切り替える。計時部として機能する制御部は、像担持体の稼働時間Ｔｘを計時する（Ｓ１）。摩耗度算出部として機能する制御部は、前記像担持体の稼働時間Ｔｘを帯電部における帯電バイアス電圧の状態ごとに重み付けして積算することにより、像担持体の摩耗度を算出する（Ｓ６，Ｓ７）。【選択図】図３

現像装置及び画像形成装置

【課題】コストアップが抑制された構成で、現像容器の外部への現像剤の飛散を抑制することが可能な現像装置を提供する。【解決手段】現像装置は、現像容器４１と、第１攪拌部材４５及び第２攪拌部材と、現像ローラーと、を備える。現像容器４１は、互いに並列配置される第１攪拌室４３及び第２攪拌室と、第１攪拌室４３及び第２攪拌室の長手方向の両端部側で互いを連通させる連通部と、を有する。第１攪拌部材４５は、循環方向とは逆方向に現像剤を搬送する逆螺旋羽根４５３を有する。排気管６１は、第１攪拌室４３の、逆螺旋羽根４５３と対向する壁部の、連通部以外の部分に形成され、先端部の排気口６１１を介して第１攪拌室４３から現像容器４１の外部に空気を排出する。濾過部６２は、排気口６１１に隣接して排気管６１内に配置され、排気口６１１からの現像剤の漏出を規制する。【選択図】図４

画像形成装置における現像装置

【課題】現像ローラと感光体との間に形成する交番電界と、現像ローラ及び磁気ローラに印加する直流バイアスなどのバランスを容易に取ることができ、かつ現像ローラ上にトナー層を良好に形成しゴーストを防止すると共に現像ローラへのトナー付着とそれによる画像濃度の減少などを防止し、それにより感光体と現像ローラ間のリーク、現像ローラと磁気ローラ間のリークを起こさないようにした画像形成装置における現像装置を提供する。 【解決手段】２成分現像剤で形成した磁気ブラシによる摺擦で現像ローラにトナー層を担持させ、現像ローラと感光体との間に第１の電源によって形成した矩形波からなる交番電界で、現像ローラからトナーを飛翔させ感光体上の潜像を現像するようにした現像装置における磁気ローラと現像ローラ間に、第１の電源で形成した交番電界と同周波数で逆位相、かつデューティ比を逆転させた矩形波による交番電界を印加する第２の電源を設けた。 【選択図】 図１

現像剤補給装置、およびこれを備えた画像形成装置

【課題】使用終了時に容器本体に残留する現像剤の量を減少させるとともに、現像剤の残量を容易に判定することを目的とする。 【解決手段】トナーコンテナ３０は、第１方向に沿って筒状に延びたコンテナ本体３１と、コンテナ本体３１に開口されたトナー排出口３１９と、移動壁３４とを備える。移動壁３４は、シャフト３３の回転に伴って、予め設定された初期位置からトナー排出口３１９に対向する最終位置まで第１方向に沿って移動する。位置判定部５２は、シャフト３３の累積回転数に応じて、移動壁３４の第１方向における位置を判定する。残量判定部５３は、判定された移動壁３４の位置に応じて、コンテナ本体３１に残留するトナーの残量を判定する。 【選択図】図１１

電子写真現像剤用トナー、電子写真現像剤および導体パターンの形成方法

(57)【要約】 【課題】 大きな金属粒比率と高い絶縁性の双方を兼ね 備えた絶縁化表面処理金属粒子を用いることにより、高 い絶縁性によって均一な帯電が可能として大きな精度で 導体パターンをグリーンシート上に印刷、形成し、焼成 後には良好な導通を有し信頼性の高い導体パターンを形 成する。 【解決手段】 キャリア粒子と、金属粒の表面が熱可塑 性絶縁物により被覆されて絶縁化されキャリア粒子より 総抵抗を同等以上に設定した、平均粒径が２〜２０μｍ の範囲にある絶縁化表面処理金属粒子とからなる現像剤 を用い、キャリア粒子により絶縁化表面処理金属粒子を 帯電付与し、電子写真法により感光体上に形成された静 電潜像を接触現像し、絶縁化表面処理金属粒子からなる 顕像を形成し、誘電体粉末と有機結合剤とからなるセラ ミック薄膜グリーンシートに転写する導体パターンの形 成方法。

導体パターンの形成方法

(57)【要約】 【課題】 大きな金属粒比率と高い絶縁性の双方を兼ね 備えた絶縁化表面処理金属粒子を用いることにより、高 い絶縁性によって均一な帯電が可能となることにより大 きな精度で導体パターンをグリーンシート上に印刷、形 成でき、焼成後には良好な導通を有し信頼性の高い導体 パターンを形成する。 【解決手段】 金属粒の表面が熱可塑性絶縁物により被 覆されて絶縁化され、平均粒径が２〜２０μｍの範囲に ある絶縁化表面処理金属粒子と、平均粒径４０〜１２０ μｍのキャリア粒子とからなる現像剤を用い、キャリア 粒子により絶縁化表面処理金属粒子に帯電付与し、電子 写真法により感光体上に形成された静電潜像を接触現像 し、絶縁化表面処理金属粒子からなる顕像を形成し、誘 電体粉末と有機結合剤とからなるセラミック薄膜グリー ンシートに転写する導体パターンの形成方法。

クリツピング装置

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

コーティング用組成物、膜、及び、積層体

【課題】 優れた強度と優れた自己修復性能とを併せ持った塗膜を形成可能なコーティング用組成物の提供。【解決手段】 数平均分子量が５．０×１０５～１．０×１０７である高分子化合物と、イオン液体と、溶媒とを含み、前記イオン液体の含有量に対する、前記高分子化合物の含有量の質量基準の比が０．１５以上、１．００未満である、コーティング用組成物。【選択図】なし