| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 399281000 | Loading | 51 |
| 20090196660 | DEVELOPING APPARATUS CAPABLE OF CONVEYING DEVELOPER UNIFORMLY AND DEVELOPER CONVEYER THEREOF - A developer conveyer for conveying developer includes a shaft, and a plate structure connected to the shaft. Flexural rigidity of a central part of the plate structure is less than flexural rigidity of a lateral part of the plate structure. Deformation of the central part of the plate structure is greater than deformation of the lateral part of the plate structure so that developer moves from the lateral part to the central part of the plate structure when the shaft drives the plate structure to rotate for conveying the developer. | 08-06-2009 |
| 20100074656 | Flocked Toner Supply Brush - A seamless conductive toner supply brush may comprise conductive fibers flocked onto a metal shaft or rigid conductive core. The shaft/core may be coated with a conductive adhesive and then flocked with fibers about 2-5 mm in length. The brush may be useful as a toner supply brush for supplying toner to a developer member in electrophotographic devices. | 03-25-2010 |
| 20130045030 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes: a developer carrying member, rotatable while carrying a developer, for supplying the developer to an image bearing member; a developer supplying member, which is provided with a foam layer at its surface and is rotatable in contact to the developer carrying member, for supplying the developer to the developer carrying member; a first gear for transmitting a driving force to the developer supplying member; and a pressing member for pressing the first gear so that the first gear is, during initial drive of the developer carrying member, moved from a first position where the driving force is not transmitted to the developer supplying member to a second position where the driving force is transmitted to the developer supplying member. | 02-21-2013 |
| 20130051867 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a developer retrieving member having a plurality of fibers extending from an outer circumferential surface of the developer retrieving member, the developer retrieving member being disposed in such a position that the fibers contact a developer carrying surface of a developer carrying body in a developer retrieving position downstream relative to a developer supply position in a moving direction of the developer carrying surface, the developer retrieving member being configured to rotate and retrieve the development agent from the developer carrying surface in the developer retrieving position by the fibers moving in contact with the developer carrying surface in response to the rotation of the developer retrieving member. | 02-28-2013 |
| 20120219332 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device configured to supply charged development agent to an intended device is provided, the developer supply device including a developer storage section storing the development agent, an electric-field transfer board that includes transfer electrodes arranged along a developer transfer path in parallel with each other, and transfers the development agent stored in the developer storage section along the developer transfer path when the transfer electrodes are supplied with a multi-phase alternating-current voltage, and a brush roller that is disposed to face the intended device in a predetermined developer supply position and face the electric-field transfer board in a predetermined developer carrying position, and configured to receive the development agent from the electric-field transfer board in the predetermined developer carrying position and carry the received development agent to the predetermined developer supply position where the development agent is supplied to the intended device. | 08-30-2012 |
| 20090274490 | XEROGRAPHIC IMAGING MODULES, XEROGRAPHIC APPARATUSES, AND METHODS OF MAKING XEROGRAPHIC IMAGING MODULES - Xerographic imaging modules, xerographic apparatuses including the xerographic imaging modules and methods of making the xerographic imaging modules are disclosed. An embodiment of the xerographic imaging modules includes a photoreceptor roll having a photoconductive surface, a donor roll adjacent the photoreceptor roll for supplying toner to the photoconductive surface, and a toner loading roll adjacent the donor roll for supplying the toner to the donor roll. The toner loading roll includes a core comprised of a foam first material, and a non-porous surface region comprised of the first material. The surface region surrounds the core and forms an outer surface of the toner loading roll. | 11-05-2009 |
| 20090238611 | Image Formation Device and Developer Supply Device - There is provided an image formation device, comprising: a holding body configured to hold thereon developer and to have a center axis extending in a main scanning direction; and a developer supply unit configured to supply the developer to the holding body through a traveling electric field, the developer supply unit having an opening through which a part of the holding body is accommodated in the developer supply unit. In this configuration, the developer supply unit comprises a sliding member configured to slide on at least a part of a surface of the holding body moving toward an outside of the developer supply unit through the opening. | 09-24-2009 |
| 20110293335 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a developer retrieving member disposed to face a developer holding surface of a developer holding member across a predetermined distance in a position downstream relative to a developer supply position where the developer holding member faces an intended device to be supplied with development agent in a direction perpendicular to a main scanning direction parallel to an axial direction of the developer holding member. The developer retrieving member is driven to rotate around an axis parallel to the main scanning direction and configured to retrieve the development agent from the developer holding surface under a retrieving electric field that is generated when a retrieving voltage is applied between the developer retrieving member and the developer holding member. | 12-01-2011 |
| 20090304415 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a housing in which nonmagnetic one-component toner is housed, a developing roller which horizontally extends in an opening of the housing, and a feed roller which is set in the housing in pressure contact with the developing roller so as to form a nip portion and which feeds toner to the developing roller. The developing device also includes a feed stabilizing member which is in contact with a lower portion of the feed roller so as to form a second nip portion, and which restricts toner feed quantity. The feed stabilizing member is provided so as to extend from a generally triangular-shaped first region below the first nip portion up to one side of the nip portion opposite to the first region side. The developing device further includes a toner circulation path for pushing back toner from the first region through below the feed stabilizing member to a second region on the one side opposite to the first region side with an aid of pressure of toner that tends to accumulate in the first region. | 12-10-2009 |
| 20100124444 | DEVELOPING UNIT, IMAGE RETAINER UNIT AND IMAGE FORMING APPARATUS - A developing unit includes a developer receiving vessel and a developer conveyance member as defined herein, the developer conveyance member includes a rotary shaft, a first conveyance member and a second conveyance member as defined herein, the second conveyance member is supported on the rotary shaft and bent in contact with the wall surface of the developer receiving chamber with rotation of the rotary shaft while conveying the developer toward the developer retainer, and the second conveyance member includes a second conveyance member body supported on the rotary shaft and located out of the overlapping range, and a second overlapping portion extending from the second conveyance member body to the other axial end of the overlapping range, designed to be movable relatively to the rotary shaft and disposed adjacently to an upstream side of the first overlapping portion in a rotation direction. | 05-20-2010 |
| 20100143003 | IMAGE FORMING APPARATUS AND DEVELOPING DEVICE FOR USE WITH THE IMAGE FORMING APPARATUS - A developing device has a developer material bearing member, a toner bearing member, and an electric field generator adapted to generate an alternate first and second electric fields between the members. The members are driven to move in directions opposite to each other in the opposing region. The first electric field is an oscillating electric field which as a whole biases the toner particles from the developer material bearing member to the toner bearing member. The amount (M/A1) of the toner particles carried per unit area on the toner bearing member is 4 g/m | 06-10-2010 |
| 20090003889 | Developer Unit, Process Device and Image Forming Apparatus - A developer unit according to one aspect of the invention includes: a developer accommodation member configured to accommodate a developer having charging polarity to a first polarity opposite to a second polarity; a developing roller arranged at the developer accommodation member, the developing roller being configured to carry the developer; a supply roller arranged at the developer accommodation member and configured to supply the developer to the developing roller, an image formation width being defined on a surface of the supply roller along an axis direction of the supply roller; and a charging member brought into sliding contact with an outside of the image formation width of the supply roller. The charging member at a portion brought into sliding contact with the supply roller is formed of a material which is positioned on a side of the second polarity on a triboelectric series relative to the supply roller. | 01-01-2009 |
| 20080317513 | IMAGE FORMING APPARATUS, PROCESS CARTRIDGE, AND DEVELOPMENT DEVICE - An image forming apparatus includes either one of a process cartridge and a development device. The process cartridge is attachable to and detachable from the image forming apparatus, and integrally includes the development device. The development device includes a developer supplying member and a developer carrying member, at least one of which is formed of an elastic material, and which rotate in contact with each other. The developer supplying member is provided to be displacable in directions of contacting with and separating from the developer carrying member, and is biased toward the developer carrying member by predetermined biasing force. | 12-25-2008 |
| 20090297230 | TONER SUPPLYING ROLLER, DEVELOPING APPARATUS, AND IMAGE FORMING APPARATUS - A toner supplying roller which is used in a developing apparatus and has the following characteristics: (1) an average diameter of a foam cell opening portion on a surface of a foam elastic member is 100 to 800 μm, (2) an unopened cell closed by a skin layer of a film thickness of 50 μm or less is present in the surface of the foam elastic member, and (3) assuming that a surface area of the foam elastic member is A, a total area of the foam cell opening portions is B, and a surface area of the unopened cell is C, the following relationship is satisfied: | 12-03-2009 |
| 20080310887 | TONER SUPPLYING ROLLER AND METHOD FOR MANUFACTURING THE SAME - A toner supplying roller is provided in which a polyurethane foam layer can be obtained without decreasing the reactivity of the polyurethane material, and in which contamination by a catalyst remaining in the polyurethane foam layer is suppressed, so that a good image can be obtained. Moreover, the toner supplying roller has suitable aperture cells in the surface, suitably performs the scraping off of the development residual toner and toner supply between the toner supplying roller and the developing roller, and forms a uniform toner thin film on the developing roller, so that a good image can be obtained. In a toner supplying roller including a polyurethane foam layer that is formed on the mandrel periphery using a polyurethane material including a polyol and a polyisocyanate, the polyol and the polyisocyanate have an amine number of 3 mg KOH/g or more and 15 mg KOH/g or less in total. | 12-18-2008 |
| 20090279923 | ROLLER FOR USE WITH IMAGE FORMING APPARATUS - A developing device of an electrophotographic image forming apparatus has a first roller and a second roller disposed in a peripheral contact with the first roller to define a contact region therebetween so that the first roller is capable of supplying and collecting a toner to and from the second roller in the contact region. The first roller has a core and a polyurethane foam layer. The polyurethane foam has an open ratio of cells of 2% or more and 50% or less and a hardness of 1 gf/mm or more and 6 gf/mm or less, the hardness being defined by a load per unit length in a longitudinal direction of the first roller, the load being determined by forcing the peripheral surface of the polyurethane foam layer against a substrate, measuring a load necessary for the polyurethane foam layer to be compressed by 30% in thickness, and dividing the load by a length of the polyurethane foam layer in the longitudinal direction. The first and second rollers are disposed so that the contact region has a peripheral width of 3 mm or more and 8 mm or less. | 11-12-2009 |
| 20090274491 | Developing Device and Image Forming Apparatus Having the Same - A developing device capable of facilitating toner delivery upward. The cartridge includes a developing roller, a toner supply roller disposed therebelow, a toner container disposed below the toner supply roller and defining an internal space for accommodating the toner. The container has an upper portion formed with an elongated opening having an upper edge and a lower edge. A conveying member is rotatably disposed in the internal space and in rotational contact with an inner surface of the container for delivering the developing agent upward. The developing agent container including a first wall portion for receiving thereon the developing agent passed through the opening. The first wall portion extends from the lower edge in a downstream direction with respect to a rotational direction of the conveying member toward a position close to a bottommost portion of the toner supply roller. The container also includes a second wall portion extending from the upper edge in an upstream direction with respect to the rotational direction. The conveying member is in simultaneous sliding contact with both the first wall portion and the second wall portion. | 11-05-2009 |
| 20100303511 | Developer Supply Device - A developer supply device, comprising: a developer holding body having a circumferential surface and a rotation axis extending in a main scanning direction and being placed to face a supply target at a developer supply position; a carrying substrate that has a plurality of electrodes arranged along a direction intersecting with the main scanning direction and that carries a developer in a developer transport direction through a traveling electric field generated by application of a multiphase alternating voltage to the plurality of electrodes, the carrying substrate being located such that an end of the carrying substrate in the developer transport direction is positioned to face the developer holding body; and a voltage application unit configured to apply, to the plurality of electrodes and the developer holding body, the multiphase alternating voltage having alternating components synchronizing with each other. | 12-02-2010 |
| 20100316418 | Development Device and Image Forming Device - A development device, comprising: a casing; a developer reservoir formed at a bottom part of the casing; a developer supply chamber that accommodates the developer; a developer holding body that is provided to be rotatable about a rotation axis extending in a width direction of the casing and is located on an upper side of the developer reservoir to face an image holding body; a first carry member that is provided in the developer supply chamber to extend in the width direction and to carry the developer to the width direction, a second carry member that is provided on a casing side to extend in the width direction and to carry the developer to the width direction; and a carry substrate that is provided in the casing so that the developer is carried from the developer reservoir to a position facing the developer holding body. | 12-16-2010 |
| 20090142107 | DEVELOPMENT DEVICE, IMAGE FORMING APPARATUS AND DEVELOPMENT METHOD - A development device including a development roller to bear a development agent including toner, a development agent supplying roller which is provided adjacent to the development roller to supply the development agent to the development roller, a regulation applicator to regulate the layer thickness of the development agent on the development roller and a capture device to capture the development agent finely powdered by the regulation applicator. | 06-04-2009 |
| 20110243616 | IMAGE DEVELOPER, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - An image developer, including a developer container containing a developer developing a latent image on a latent image bearer; a developer bearer bearing the developer, located close to or contacting the latent image bearer; and a developer feeding and collection roller feeding the developer onto the developer bearer and scraping the developer therefrom, rotating while contacting thereto with pressure, wherein the developer feeding and collection roller includes an inner layer formed of an electroconductive foamed rubber; and an outer layer formed of an insulative foamed rubber, and wherein the following relationship is satisfied: | 10-06-2011 |
| 20110076064 | DEVELOPING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case. | 03-31-2011 |
| 20110052273 | IMAGE FORMING DEVICE AND DEVELOPING DEVICE - A developing device that is provided in an image forming device that forms an image includes an image carrier on which an electrostatic latent image is formed; a developer carrier that forms a developer image on a surface of the image carrier by attaching a developer on the electrostatic latent image; a supplying member that supplies the developer to the developer carrier by contacting the developer carrier, and that scrapes the developer remaining on the surface of the developer carrier from the developer carrier, and a deformation amount between the developer carrier and the supplying member is individually configured corresponding to a location where the developing device is provided in the image forming device. | 03-03-2011 |
| 20100119266 | NYLON12-FIBER-IMPLANTED CONDUCTIVE ROLLER, DEVELOPING UNIT HAVING THE SAME, AND IMAGE FORMING APPARATUS HAVING THE SAME - Disclosed is a toner supply apparatus that can be employed in an image forming apparatus to supply toner. The toner supply apparatus can include an electrically conductive body, on the surface of which multiple fibers is arranged. The fibers may include nylon 12 fibers containing a conductive material, such as, for example, carbon Hack. | 05-13-2010 |
| 20120034002 | DEVELOPMENT DEVICE AND IMAGE FORMNG DEVICE INCLUDING THE SAME - A development device includes: a developer carrier that is positioned to oppose an electrostatic latent image carrier and that supplies a developer to the electrostatic latent image carrier; a developer supply member that is positioned to oppose the developer carrier and that supplies the developer to the developer carrier; a developer charging member that is positioned to oppose the developer supply member and that charges the developer. | 02-09-2012 |
| 20090324301 | DEVELOPING APPARATUS AND IMAGE FORMING APPARATUS - A developing apparatus performs image visualization processing by electrostatically adhering toner carried on a developer carrying member onto an electrostatic latent image formed on an image carrying member. In the developing apparatus, the toner to be supplied to the developer carrying member is directly injected onto the developer carrying members after flying inside an electric field generated immediately before reaching the developer carrying member. The electric field has one of a homopolarity and a reverse polarity to the electrostatic latent image. | 12-31-2009 |
| 20120201576 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a casing including a developer storage section at a bottom portion therein and an opening formed at an end thereof away from the developer storage section, development agent chargeable with a predetermined polarity, stored in the developer storage section, and a transfer board that is disposed in the casing and configured to transfer the development agent stored in the developer storage section when a multi-phase alternating-current voltage is applied to transfer electrodes of the transfer board. The development agent includes a mother particle having, around an outer surface thereof, an electrically insulating layer without a polar group having a charge polarity identical to the predetermined polarity, and an external additive, absorbed to around the mother particle in an easily desorbable manner, which is an electrically insulating fine particle having a charge polarity identical to the predetermined polarity. | 08-09-2012 |
| 20100143002 | Development device and image forming apparatus using the same - In a hybrid development method using a plurality of toner carriers, a development device and image forming apparatus are provided, wherein high image quality in which toner density is not reduced even in the case of high speed printing and the occurrence of development hysteresis (ghost) is controlled is ensured by accelerating the collection of the post-development residual toner on the toner carrier. The counter-charge having occurred in the developer remains in the developer without decreasing to disappear until the developer moves to the second toner carrier on the downstream-side, wherein this counter-charge is caused by supplying toner to the first toner carrier upstream in the rotating direction of the developer carrier. | 06-10-2010 |
| 20110026977 | DEVELOPER SUPPLYING MEMBER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS - A developer supplying member includes a foamed member formed of continuous foams for supplying developer to a developer supporting member. The foamed member has a high resistivity in terms of electrical conductivity through ion conductivity, and has a low resistivity in terms of electrical conductivity after carbon black is attached to foam cell walls thereof. | 02-03-2011 |
| 20080219711 | IMAGE FORMING APPARATUS AND IMAGE FORMING UNIT THEREOF - An image forming apparatus including a photosensitive member on which an electrostatic latent image is formed, an image forming unit to form a visible image on the photosensitive member formed with the electrostatic latent image, and a transfer device to transfer the visible image formed on the photosensitive member onto a printing medium. The image forming unit includes a developing agent storage vessel to store a developing agent therein, a developing unit having a conductive layer to which the developing agent is attached and used to attach the developing agent to the photosensitive member, and a supply unit to supply the developing agent stored in the developing agent storage vessel to the developing unit. The developing unit and the supply unit satisfy a relational expression 1.7≦logSr/logDr≦2.5, where Sr a volume resistance of the supply unit and Dr is a volume resistance of the developing unit. | 09-11-2008 |
| 20080219710 | DEVELOPING CARTRIDGE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing cartridge usable with an image forming apparatus, the developing cartridge includes a supporting frame, a developing member which is supported in the supporting frame, and to supply the developer to an electrostatic latent image of a photosensitive body of the image forming apparatus, a supplying member which is supported in the supporting frame, and to supply the developer to the developing member, and an elastic unit which is supported in the supporting frame, and to elastically support the supplying member so that the supplying member can move toward and away from the developing member. | 09-11-2008 |
| 20110135344 | Developing device and image forming apparatus - A developer bearing body rotates in a first direction. A supply brush roller, out of contact with the body, also rotates in the first direction. A brush contact member has a first contact portion in contact with bristles of the roller above a first horizontal plane passing through a rotational axis of the roller and upstream in the first rotational direction of the roller, of a portion of the roller opposing the body. A thickness adjusting member has a second contact portion in contact with the body below a second horizontal plane passing through a rotational axis of the body and downstream in the first rotational direction of the body, of the portion of the roller opposing the body. A first vertical plane passing through the first contact portion is closer to the axis of the roller than is a second vertical plane passing through the second contact portion. | 06-09-2011 |
| 20110135345 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a developer supplying member for supplying developer; and a developer supporting member for supplying the developer supplied from the developer supplying member onto a static latent image supporting member. The developer supplying member includes an outer circumferential portion having an electrical resistivity between 1.2×10 | 06-09-2011 |
| 20090175662 | Developer Supply Device and Image Forming Apparatus - An apparatus includes an upstream transport surface TSa which, while facing a circumferential surface DS of a developing roller | 07-09-2009 |
| 20120148314 | Developing unit and image forming apparatus employing the same - A developing unit includes a toner storage portion containing toner and a toner supply member, and a development portion disposed above the toner storage portion. A partition wall divides the toner storage portion from the development portion. The partition wall includes a supply opening that defines a toner supply path from the toner storage portion to the development portion, and a discharge opening that defines a toner discharge path from the development portion to the toner storage portion. | 06-14-2012 |
| 20120045253 | Developing unit and image forming apparatus employing the same - A developing unit includes a toner storage portion containing toner and including a toner supply member, a development portion disposed above the toner storage portion and containing the toner supplied from the toner storage portion by the toner supply member, and including a developing roller and a supply roller to supply the toner to the developing roller, and a partition wall to divide the toner storage portion and the development portion, and including an opening portion disposed under the lowest portion of the supply roller and forming a path of the toner supplied from the toner storage portion to the development portion. | 02-23-2012 |
| 20110064486 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS - A developing device includes a developer supporting member for attaching developer to a static latent image supporting member supporting a static latent image; and a developer supplying member for supplying developer to the developer supporting member. The developer supporting member has a surface with a static friction coefficient in a range of 0.41 and 1.81. The developer supplying member is pushed against the developer supporting member for a pushing amount in a range of 0.5 mm and 1.5 mm. | 03-17-2011 |
| 20120027471 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device is provided, which includes a transfer board including an activating section and an always-transferring section. The activating section is disposed in a position close to a developer holding member and lower than a position where development agent is transferred onto the developer holding member. The activating section is supplied with an activating voltage for making the development agent leave a developer transfer path and drop into the developer storage section during an activating process performed at an initial stage of a developer transferring operation while supplied with the transfer bias voltage after the activating process. The always-transferring section is disposed across a position facing the developer storage section to a position lower than and adjacent to the activating section, and always supplied with a transfer bias voltage during the developer transferring operation. | 02-02-2012 |
| 20120063817 | DEVELOPMENT UNIT AND IMAGE FORMING APPARATUS USING THE SAME - A development unit including: a developer carrier configured to carry a developer, and capable of supplying the carried developer to an electrostatic latent image; and a developer supplying member configured to supply the developer to the developer carrier and having a surface thereof made of a foamed body. Relationships expressed by v| 03-15-2012 | |
| 20110103848 | DEVELOPMENT AGENT SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A development agent supply device is provided, which includes a development agent holding member configured to rotate around an axis parallel to a first direction such that a development agent holding surface, which faces an intended device to be supplied with development agent in a first position, moves in a second direction perpendicular to the first direction, a transfer board configured to charge and transfer development agent thereon to a second position to face the development agent holding surface, and a facing member disposed to face the development agent holding surface in a position between the first position and the second position in the second direction, the facing member being configured to charge development agent held on the development agent holding surface under an alternating electric field generated between the facing member and the development agent holding member. | 05-05-2011 |
| 20110103849 | DEVELOPMENT AGENT SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A development agent supply device has a transfer board including a supply section disposed upstream relative to a proximity position in a development agent transfer direction, and a retrieving section disposed downstream relative to the proximity position in the development agent transfer direction. The supply section includes first transfer electrodes arranged along the development agent transfer direction to transfer development agent toward the proximity position with an electric field generated with a supply bias applied to the first transfer electrodes and supply the development agent to the development agent holding surface near the proximity position. The retrieving section includes second transfer electrodes arranged along the development agent transfer direction to retrieve development agent from the development agent holding surface near the proximity position and transfer the development agent downstream in the development agent transfer direction with an electric field generated with a retrieving bias applied to the second transfer electrodes. | 05-05-2011 |
| 20120121300 | TORSION FLEXIBLE DONOR ROLL DRIVE AND METHOD - A donor roll assembly for a developer unit including a donor roll for delivering toner onto a moving photoconductive member. The donor roll is supported for rotation and has an input shaft, a gear slideably received on the input shaft, and a torsion damper for rotationally coupling the gear to the input shaft of the donor roll for torsion damping. The torsion damper includes a resilient member adapted to deform under torsion to damp speed error (jitter) of a driving component, such as a motor. | 05-17-2012 |
| 20100247166 | Image Forming Apparatus - Each transport electrode has its longitudinal direction intersecting with a sub-scanning direction. Transport electrodes are disposed in parallel with each other and are arrayed along the sub-scanning direction. A transport-electrode electricity supply wiring section is connected to root portions of the transport electrodes. The root portions are one end portions of the transport electrodes with respect to the longitudinal direction. Toner transport guide members are disposed to cover the transport-electrode electricity supply wiring section and opposite end portions of the transport electrodes; i.e., the root portions and distal end portions. | 09-30-2010 |
| 20120076552 | DEVELOPER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developer supply device configured to supply charged development agent to an intended device, includes a carrying assist member disposed, apart from a developer transfer path, to face a developer carrying surface of a developer carrying member at an upstream side relative to a developer carrying position, in which a transfer board is opposite and in closest proximity to the developer carrying surface, in a direction in which the developer carrying surface moves when the developer carrying member is driven to rotate. The carrying assist member is configured to, when a predetermined voltage is applied thereto, generate an electric field, under which the charged development agent heads for the developer carrying surface, between the carrying assist member and the developer carrying member. | 03-29-2012 |
| 20090060593 | DEVELOPING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing device capable of smoothly dispersing a developer in a development container and an image forming apparatus having the developing device. The developing device includes a development container which contains a developer and has an opening, a development roller which is mounted near the opening of the development container, a conveying member which is movably mounted in the development container to supply the developer to the development roller and moves forward and backward in a direction of the opening, and at least one dispersing member which operates according to the forward/backward movement of the conveying member to disperse the developer in the development container. | 03-05-2009 |
| 20110236079 | DEVELOPING DEVICE AND PROCESS CARTRIDGE - A developing device includes a developer accommodating chamber containing a developer; a developer carrying member for carrying the developer to develop an electrostatic image; a feeding belt for feeding the developer toward the developer carrying member by rotation of the driving roller in a stretched state in which the feeding belt is stretched by a driving roller and a follower roller; and a switching mechanism for switching the feeding belt from a loosened state in which the feeding belt is looser than in the stretched state to the stretched state. | 09-29-2011 |
| 20110236078 | Developer Supply Device and Image Forming Apparatus Having the Same - A developer supply device includes a developer-carrying body having a developer-carrying surface that faces an intended device in a first position and moves in a moving direction, a first transfer board that faces the developer-carrying surface in a second position upstream relative to the first position in the moving direction and transfers the developer to the second position in a direction opposite to the moving direction in the second position, an electrification member facing the developer-carrying surface in a third position downstream relative to the second position and upstream relative to the first position in the moving direction, and a second transfer board that faces the developer-carrying surface in a fourth position downstream relative to the first position and upstream relative to the second position in the moving direction and transfers the developer to a developer storage section in a direction identical to the moving direction in the fourth position. | 09-29-2011 |
| 20110158706 | DEVELOPMENT AGENT SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A development agent supply device includes a casing having an opening and a development agent storage section, a development agent holding member housed in the casing such that a development agent holding surface thereof faces a developer-supplied device via the opening, a first electric-field transfer board that transfers development agent with a traveling-wave electric field along a down-facing development agent transfer surface in a predetermined direction from the development agent storage section to the opening and faces the development agent holding surface at a downstream end in the predetermined direction, and a second electric-field transfer board that includes a first section facing an downstream end of the first electric-field transfer board in the predetermined direction, and a second section facing the development agent holding member and transfers development agent received from the first electric transfer board at the first section, to the second section with a traveling-wave electric field. | 06-30-2011 |
| 20110158705 | TONER SUPPLY ROLLER FOR ELECTROPHOTOGRAPHIC IMAGING APPARATUS AND METHOD OF PREPARING THE SAME - A toner supply roller of an electrophotographic imaging apparatus and a method of preparing the toner supply roller are provided. The toner supply roller includes a polyurethane foam, and a metal shaft inserted in the polyurethane foam along an axis thereof, wherein the polyurethane foam includes an ion-conductive agent and a binder, and the binder includes a resin having an amide bond. Accordingly, the toner supply roller including polyurethane foam provides an improved toner supply and prevents image defects. | 06-30-2011 |
| 20130022375 | DEVELOPING DEVICE FOR IMAGE FORMING APPARATUS AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing device of an image forming apparatus to convey a developing agent, the developing device including a housing having a developing agent accommodating compartment disposed therein, a first rotation member and a second rotation member that are disposed inside the developing agent accommodating compartment, a plurality of developing agent convey members that rotate around the first rotation member and the second rotation member being arranged along a shaft direction of the first rotation member, and at least one torque limiter coupled to between the first rotation member and at least one of the plurality of developing agent convey members, the at least one torque limiter to allow at least one of the plurality of developing agent convey members to perform a relative rotation with respect to the first rotation member when a load is applied to the plurality of developing agent convey members is varied. | 01-24-2013 |
| 20130022376 | DEVELOPING DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A developing device for use with an image forming apparatus, includes a developing roller for carrying a developer and for forming a developer image on an image bearing member; a supplying roller for supplying the developer to the developing roller, wherein the supplying roller has a foam layer at its surface and forms a nip between itself and the developing roller; an accommodating portion, provided below the supplying roller, for accommodating the developer; and a feeding member for feeding the developer from the accommodating portion onto the nip by being rotated in a direction opposite to a rotational direction of the supplying roller. The supplying roller is rotated in a direction which is from a lower end of the nip to an upper end of the nip. The supplying roller is provided so that its top is higher than a top of the developing roller. | 01-24-2013 |
