Patent application number | Description | Published |
20080260428 | Rotational Force Transmitting Parts - A rotating force transmitting part for an electrophotographic photosensitive drum for a main assembly of the electrophotographic image forming apparatus, wherein the main assembly of the electrophotographic image forming apparatus includes a driving shaft, to be driven by a motor, having the rotating force applying portion, and wherein the electrophotographic photosensitive drum is dismountable from the main assembly of the electrophotographic image forming apparatus in a direction substantial perpendicular with an axial direction of the driving shaft, the rotating force transmitting part includes a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum in the state in which electrophotographic photosensitive drum is mounted to the main assembly of the electrophotographic image forming apparatus, wherein the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position, wherein when the process cartridge is dismounted from the main assembly of the electrophotographic image forming apparatus in a direction substantially perpendicular to the axis of the electrophotographic photosensitive drum, the coupling member moves from the rotational force transmitting angular position to the disengaging angular position. | 10-23-2008 |
20090317131 | PROCESS CARTRIDGE AND ELECTROGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge usable with an electrophotographic image forming apparatus, the process cartridge includes i) an electrophotographic photosensitive drum rotatable about an axis and having a photosensitive layer at its peripheral surface; ii) process means actable on the drum; iii) a coupling member for receiving an external force for rotating the drum, wherein the coupling member is capable of taking a first angular position for transmitting the external force to the drum, a second angular position inclined away from the axis of the drum from the first angular position, and a third angular position away from the axis of the drum from the first angle position; and iv) a regulating portion for regulating an inclination angle of the coupling member such that downward inclination angle of the coupling member is smaller than an inclination angle of the coupling member when the coupling member is at the second angular position. | 12-24-2009 |
20090317132 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTROGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus including a driving shaft having a rotational force applying portion by moving in a direction substantially perpendicular to an axis of the driving shaft. The cartridge includes an electrophotographic photosensitive drum, a coupler engageable with the rotational force applying portion to receive a rotational force for rotating the drum and taking transmitting, pre-engagement, and disengaging positions, and a regulator regulating an inclination angle of the coupler. During cartridge mounting, the coupler moves from the pre-engagement to the transmitting position to oppose the driving shaft, and during cartridge dismounting, the coupler moves from the transmitting to the disengaging position to disengage from the driving shaft. | 12-24-2009 |
20110091239 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge for use in an electrophotographic image forming apparatus. The process cartridge includes an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, with the electrophotographic photosensitive drum being rotatable about an axis thereof. The process cartridge also includes a coupling member to receive a rotational force for rotating the electrophotographic photosensitive drum, with the coupling member capable of taking a rotational force transmitting angular position for transmitting the rotational force to the electrophotographic photosensitive drum. The coupling member is also capable of taking a disengaging angular position in which the coupling member is inclined away from the rotational force transmitting angular position. | 04-21-2011 |
20120121290 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge comprises a photosensitive drum, a developing roller, and a coupling member. The coupling member is capable of inclining relative to the photosensitive drum such that the coupling axis inclines relative to the drum axis. A regulating portion surrounds the coupling member so as to confine the range of inclination of the coupling member. The regulating portion is provided with a recess that recesses in a direction away from the drum axis and away from the developing roller. An angle between the coupling axis and the drum axis is larger when at least a part of the coupling member is in the recess than when the coupling member contacts another portion of the regulating portion. | 05-17-2012 |
20120155909 | IMAGE FORMING APPARATUS - An image forming apparatus includes a stack surface on which recording materials having images are stacked, the stack surface being provided on an upper surface of an apparatus body, and a movable unit shaped like a flat plate and provided on the upper surface of the apparatus body, the movable unit having a display portion configured to display information. At least a portion of the movable unit overlaps with the stack surface, as viewed in a vertical direction. A flat portion of the movable unit is movable between a first position along the upper surface of the apparatus body and a second position where a distance between the movable unit and the stack surface in the vertical direction is longer than at the first position. | 06-21-2012 |
20120163887 | FIXING DEVICE - A fixing device includes a film, a roller forming a nip with the film, for conveying a sheet while nipping the sheet, a member for urging one of the film and the roller toward the other, a heater for heating one of the film and the roller, a cam, rotationally driven by a motor, for moving the urging member in a releasing direction or a restoring direction of an urging force by the urging member, a gear that swings, depending on normal or reverse rotation of the motor, and a stopper to stop the swinging of the gear. By this arrangement, the rapid rotation of gears that are free from engagement, which can cause impact noise during a transitional process between a gear engagement state in a nip-released state by the roller and a gear engagement state during a nipping function by the roller, can be suppressed. | 06-28-2012 |
20130064569 | PROCESS CARTRIDGE ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge for use with a main assembly of an electrophotographic image forming apparatus. The process cartridge includes an electrophotographic photosensitive drum having a photosensitive layer, and a process means actable on the electrophotographic photosensitive drum. The process cartridge also includes a coupling member for receiving a rotational force for rotating the electrophotographic photosensitive drum. | 03-14-2013 |
20130071141 | ROTATIONAL FORCE TRANSMITTING PART - A device for transmitting a rotational force to an electrophotographic photosensitive drum. The device includes a flange connectable with the drum. A coupling member is provided with a rotational force transmitting portion engageable with the flange. | 03-21-2013 |
20130164031 | ROTATIONAL FORCE TRANSMITTING PART - An electrophotographic photosensitive drum unit includes a cylinder having a photosensitive layer at an outer periphery thereof. A drum flange is provided at one end of the cylinder, with the drum flange including a plurality of projections provided inside of the drum flange and projected radially inwardly of the drum flange, and with a space diametrically between the projections. A radially inner part of each projection has an overhang. | 06-27-2013 |
20130177335 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a coupling member provided at an axial end portion of a photosensitive drum and rotatable about a coupling axis thereof so as to transmit a driving force to the photosensitive drum. The coupling member is capable of inclining relative to the photosensitive drum so that the coupling axis inclines relative to a drum axis, with the coupling member having a first end portion connected to the photosensitive drum, a second end portion, and a connecting portion between the first end portion and the second end portion. A maximum distance from the coupling axis to an outermost surface of the connecting portion along a line perpendicular to the coupling axis is less than a maximum distance from the coupling axis to an outermost surface of the second end portion along a line perpendicular to the coupling axis. | 07-11-2013 |
20140056613 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft, to be driven by a motor, having a rotational force applying portion, wherein the process cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the process cartridge includes i) an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, the electrophotographic photosensitive drum being rotatable about an axis thereof; ii) process means actable on the electrophotographic photosensitive drum; iii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position, wherein when the process cartridge is dismounted from the main assembly of the electrophotographic image forming apparatus in a direction substantially perpendicular to the axis of the electrophotographic photosensitive drum, the coupling member moves from the rotational force transmitting angular position to the disengaging angular position. | 02-27-2014 |
20140064783 | ROTATIONAL FORCE TRANSMITTING PART - A rotating force transmitting part for an electrophotographic photosensitive drum for a main assembly of the electrophotographic image forming apparatus. The rotating force transmitting part includes a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum in the state in which electrophotographic photosensitive drum is mounted to the main assembly of the electrophotographic image forming apparatus, wherein the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position. | 03-06-2014 |
20140086634 | ROTATIONAL FORCE TRANSMITTING PART - An electrophotographic photosensitive drum unit includes (a) a cylinder having a photosensitive layer at an outer periphery thereof and (b) a drum flange provided at one end of the cylinder, with the drum flange including at least two projections provided inside of the drum flange and projected radially inwardly of the drum flange, and 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. | 03-27-2014 |
20140099144 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge includes a casing, a photosensitive drum having an axis L | 04-10-2014 |
20140112686 | PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT - A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The process cartridge includes a coupling member engageable with a rotational force applying portion to receive a rotational force. The coupling member is capable of taking a rotational force transmitting angular position for transmitting the rotational force, a pre-engagement angular position in which the coupling member is inclined away from the axis from the rotational force transmitting angular position, and a disengaging angular position in which the coupling member is inclined away from the axis from the rotational force transmitting angular position. | 04-24-2014 |