Patent application number | Description | Published |
20100028042 | PROCESS CARTRIDGE AND METHOD FOR REMOVING PROCESSING MEANS FROM PROCESS CARTRIDGE - A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes an electrophotographic photosensitive drum; a charging roller for electrically charging the electrophotographic photosensitive drum; a drum frame rotatably supporting one and the other longitudinal end of the charging roller through bearings and rotatably supporting one longitudinal end of the electrophotographic photosensitive drum; a drum bearing member rotatably supporting the other longitudinal end of the electrophotographic photosensitive drum and connected to the other longitudinal end of the drum frame by an adhesive; a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum; a magnet roller provided inside the developing roller, wherein the magnet roller is movable in the longitudinal direction; a first side member supporting one longitudinal end of the magnet roller and connected to one longitudinal end of a developing device frame; and a second side member supporting the other longitudinal end of the magnet roller and connected to the other longitudinal end of the developing device frame. | 02-04-2010 |
20100028050 | DEVELOPING APPARATUS AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A developing device for an electrophotographic image forming apparatus includes a developing roller of a developing portion for developing an electrostatic latent image on an electrophotographic photosensitive drum, a developer accommodator, a supply opening, between the developing portion and the accommodator, and a stirring member including a support rotatably provided on the accommodator and a stirrer on the support. The stirrer's length is longer than the opening's length in a longitudinal direction of a mount mounted to the support and the length of the stirrer's end portion is shorter than the supply opening's length. When the stirrer is rotated, an end thereof enters the opening to feed the developer from the accommodator through the opening to the developing portion and then through the supply opening back to the developer accommodating portion. | 02-04-2010 |
20100034561 | DISMOUNTING AND MOUNTING METHODS FOR COUPLING AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A method for dismounting a coupler from an electrophotographic photosensitive drum flange whose drum is usable with a cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus. The coupler receives a force rotating the drum from the main assembly when the cartridge is mounted and includes force receiving and spherical portions. The method includes the steps of inclining the coupler relative to a flange rotational axis, pushing a pin from one end to the other end thereof, both of which project from the spherical portion when the inclining step inclines the coupler, making part of the pin ride on a surface of a regulator inside the flange, and dismounting the coupler from the flange by applying a force to a free end of the coupler toward the part of the pin riding on the regulator surface. | 02-11-2010 |
20110182619 | DISMOUNTING AND MOUNTING METHODS FOR COUPLING AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - An electrophotographic photosensitive drum is provided for an electrophotographic image forming apparatus. The unit comprises a cylinder having a photosensitive layer at an outer periphery thereof. A drum flange is provided at one end of the cylinder. A plurality of resin regulating portions are provided inside the drum flange, the regulating portions projecting inwardly of the drum flange, with a gap between the regulating portions along a circumferential direction of the drum flange. A recess is provided in the regulating portions at a position radially outside of the drum flange for facilitating deformation of the regulating portions radially outwardly of the drum flange. | 07-28-2011 |
20120057899 | PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A process includes an image bearing member unit; a developing unit; a shaft provided in either the image bearing member unit or the developing unit at an end portion of the process cartridge with respect to an image bearing member axial direction; and an opening, provided in the ether unit at the end portion, engaged with the shaft to permit movement of the developing unit relative to the image bearing member unit. The opening defines a first contact portion, when the process cartridge is mounted to a main assembly, contacting the shaft to permit movement of the developing unit, and defines a second contact portion, when the second contact portion contacts the shaft when the process cartridge is mounted to the main assembly and does not receive a driving force from the main assembly, contacting the developing unit so the shaft and the first contact portion are in contact. | 03-08-2012 |
20130230337 | DISMOUNTING AND MOUNTING METHODS FOR COUPLING AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - An electrophotographic photosensitive drum unit includes a cylinder having a photosensitive layer at an outer periphery thereof. A drum flange provided at one end of the cylinder. A coupling member is engaged with the drum flange so that an axis of the coupling member is inclinable with respect to an axis of the drum flange. A regulation portion is provided in the drum flange so as to prevent the coupling member from disengaging from the drum flange. At least a portion of the coupling member and the regulating portion is configured to be deformed to permit the coupling member to disengage from the drum flange or to engage with the drum flange. | 09-05-2013 |
20140086632 | DISMOUNTING AND MOUNTING METHODS FOR COUPLING AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A coupling member dismounting method including an inclining step of inclining a coupling member relative to a rotational axis of a drum flange, wherein the coupling member includes a spherical portion mounted to a rear end portion of a rotating force receiving member by a pin penetration. The method also includes a pin urging step of pushing the pin from one end to the other end thereof. The method further includes a pin riding step of making a part of the pin which is further projected at the end by the pin urging step ride on a surface and a coupling member dismounting step of dismounting the coupling member from the drum flange by applying a force to a free end portion of the coupling member toward a fulcrum which is the portion of the pin riding on the surface. | 03-27-2014 |
20140086633 | DISMOUNTING AND MOUNTING METHODS FOR COUPLING AND ELECTROPHOTOGPHAPHIC PHOTOSENSITIVE DRUM UNIT - An electrophotographic photosensitive drum unit includes a cylinder having a photosensitive layer at an outer periphery thereof and a drum flange provided at one end of the cylinder. The drum flange includes at least two projections provided inside of the drum flange and projected radially inwardly of the drum flange, with a space diametrically between the two projections. Each of the two projections projects radially inwardly of the drum flange to a greater extent at a position farther from the cylinder than it does at a position closer to the cylinder. Each of the two projections is provided with a recess to facilitate deformation of the projection. | 03-27-2014 |
Patent application number | Description | Published |
20120294649 | PHOTOSENSITIVE DRUM UNIT, ASSEMBLING METHOD THEREFOR, AND DISASSEMBLING METHOD THEREFOR - A photosensitive drum unit to which a coupling member | 11-22-2012 |
20140105639 | PHOTOSENSITIVE DRUM UNIT, ASSEMBLING METHOD THEREFOR, AND ASSEMBLING THEREFOR - A photosensitive drum unit to which a coupling member | 04-17-2014 |
20140348535 | DEVELOPER CONTAINER, DEVELOPING CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A developer container includes: a developer chamber, provided with an opening, for accommodating a developer; a rotatable member rotatably supported in the developer chamber; and a sealing member for being removed at the opening by being wound up by the rotatable member, wherein the sealing member is provided in the developer chamber and includes a first end portion connected to the rotatable member and a second end portion sealing the opening. Sealing of the opening is made by bonding the sealing member along an edge of the opening. The developer container includes a first bonding portion provided upstream of the opening and a second bonding portion provided downstream of the opening with respect to an unsealing direction of the sealing member. A peeling-off force for peeling off the sealing member at a predetermined angle is larger at the first bonding portion than at the second bonding portion. | 11-27-2014 |
20140356020 | DEVELOPER CONTAINER, DEVELOPING CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A developer container includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member bonded to the developer accommodating container so as to block the opening; and a rotatable member, having a connecting surface where the sealing member is connected thereto, for peeling off the sealing member from the opening by rotation thereof. The connecting surface has a rectangular shape which has a long side with respect to a rotational axis direction of the rotatable member and which is twisted in a rotational direction of the rotatable member. | 12-04-2014 |
20140376969 | CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A cartridge detachably mountable to a main assembly of an image forming apparatus includes: a frame; a flexible container, provided with an opening at a side thereof and provided inside the frame, for accommodating a developer; and a feeding member, provided below the flexible container and provided between the flexible container and the frame, for feeding the developer. The feeding member is capable of discharging the developer discharged through the opening of the flexible container into between the flexible container and the frame. | 12-25-2014 |
Patent application number | Description | Published |
20140086620 | DEVELOPER ACCOMMODATING CONTAINER, DEVELOPING CATRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A developer accommodating container for accommodating a developer includes: a toner seal member for unsealably sealing an opening of the developer accommodating container; an unsealing member, connected to an end portion of the toner seal member, for unsealing the opening by moving at least a part of the toner seal member; and an auxiliary unsealing member for assisting unsealing by changing a pulling direction of the toner seal member by the unsealing member. The auxiliary unsealing member includes a shaft portion or a projected portion. The shaft portion or the projected portion extends in a longitudinal direction of the developer accommodating container. | 03-27-2014 |
20140086621 | CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A cartridge includes: a toner chamber; and a toner supplying chamber for supplying a toner through a developer supply opening communicating with the toner chamber. The toner chamber includes: a feeding portion, including a rotatable member and a feeding sheet connected with the rotatable member, for feeding the toner from the toner chamber to the toner supplying chamber; and a toner seal member, including a first end portion and a second end portion, for unsealing the toner supply opening by being wound up by the rotatable member. During start of unsealing of the toner supply opening, the feeding portion is located below a powder surface of the toner with respect to a direction of gravitation, and the feeding sheet is located in a position where the feeding sheet is contactable to an inner wall of the toner chamber. | 03-27-2014 |
20140093272 | CARTRIDGE AND IMAGE FORMING APPARATUS - A cartridge includes: a toner accommodating frame including a toner feeding opening communicating with a toner feeding chamber and a toner filling port; a rotatable member; and a toner seal member. The toner seal member includes a first fixed portion and a second fixed portion which are fixed on the toner accommodating frame at an edge of the toner feeding opening along a longitudinal direction of the toner feeding opening, and includes a third fixed portion fixed on the rotatable member. With rotation of the rotatable member, the first fixed portion of the toner seal member is peeled off from a fixing portion to open the toner feeding opening. The toner is filled into said toner accommodating frame through the toner filling port such that the toner is first filled into a recess defined by said toner seal member. | 04-03-2014 |
20140126928 | CARTRIDGE, DEVELOPING CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A cartridge includes: a toner chamber, provided with an opening, for accommodating a toner; and a seal member including a sealing portion, elongated in a longitudinal direction of the cartridge, for unsealably sealing the opening and a mounting portion for being mounted on an unsealing member to unseal the opening. The sealing portion includes a first sealing portion located at a longitudinal end portion and a second sealing portion located at a longitudinal central portion. With respect to a direction crossing the longitudinal direction, a length between the first sealing portion and the mounting portion of the seal member is shorter than a length between the second sealing portion and the mounting portion. | 05-08-2014 |
20140212166 | ACCOMMODATING CONTAINER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An accommodating container includes: an accommodating chamber, provided with an opening, for accommodating a developer; a seal member for unsealably sealing the opening; and a rotatable member rotatably supported inside the accommodating chamber. The seal member includes a sealing portion for sealing the opening, a connecting portion connected with the rotatable member, and at least one hole provided between the sealing portion and the connecting portion. The rotatable member includes a shaft portion and at least one projection extending in a direction of being spaced from the shaft portion. The hole and the projection are provided to establish a non-overlapping positional relationship with respect to a direction along the shaft portion. | 07-31-2014 |
20140212181 | CARTRIDGE, DEVELOPING CARTRIDGE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS - A cartridge detachably mountable to a main assembly of an image forming apparatus includes: a frame; a flexible developer bag, provided with an opening and provided inside the frame, for containing a developer; and an elastic member for discharging the developer through the opening by acting on the developer bag. The elastic member is extended from a free state by contact with the developer bag, and elastic energy accumulated by extension of the elastic member acts on the developer bag to discharge the developer through the opening. | 07-31-2014 |