Abstract: A UV sterilization device for a board-type kitchenware includes a base with a driving member being received therein and defining a first motor, a left work-board, a right work-board, with a receiving room being formed between the left and right work-boards for receiving the board-type kitchenware therein, and a UV sterilization module connected to the first motor, longitudinally arranged on the inside of the left and right work-boards and horizontally sliding relative to the left and right work-boards. The first motor is configured to drive the UV sterilization module to slide so as to sterilize the board-type kitchenware received in the receiving room. The present structure not only can have a good disinfection and bactericidal effect on the harmful bacteria, pathogenic bacteria and molds left on the kitchenware with a minimize disinfection time, but also can reciprocate sterilization of the board-type kitchenware to achieve all-round sterilization by simple operation.

Abstract: An image forming apparatus includes a casing, an image forming unit movable between an accommodated position and a shifted position, an actuator, an urging member, a cam, and a contact portion. The actuator includes a pivot shaft and a protrusion protruding therefrom. The protrusion at a standby position crosses a conveyance path and is contactable with a sheet conveyed along the conveyance path. When the image forming unit is at the accommodated position, the contact portion and the cam contact each other and maintain the protrusion at the standby position against an urging force of the urging member. As the image forming unit moves from the accommodated position to the shifted position, the contact portion and the cam move away from each other such that the protrusion pivots from the standby position, by the urging force, to a retracted position at which the protrusion is retracted from the conveyance path.

Abstract: To provide a process cartridge, a drum unit capable of receiving a driving force from the main assembly, and an image forming apparatus including the process cartridge. A cartridge is provided with a movable member having a driving force receiving portion. The movable member moves between an advanced position and a retracted position.

Abstract: A cartridge that can be inserted in an apparatus main body of an image forming apparatus by moving along an axial direction of an image bearing member includes the image bearing member, a frame configured to support the image bearing member, a storage member configured to store therein information on the cartridge, and include an electrical contact, and a first pressed section and a second pressed portion configured to be pressed by the apparatus main body. The electrical contact is disposed between the first pressed section and the second pressed section, and is configured to be in contact with the main body contact on a lower side in a state where the cartridge is attached to the apparatus main body.

Abstract: A process cartridge includes a photosensitive drum; a developing roller; a developer supplying roller, provided in contact with the developing roller; a driving force receiving portion provided at a shaft end of the supplying roller; a first driving force transmitting portion; a second driving force transmitting portion; flexible sheets provided adjacent to an engaging portion between the first portion and the second portion to intermittently contact the second portion with rotation of the second portion, wherein a rotational direction of the roller is opposite to that of the roller, and a peripheral speed of the roller is larger than that of the roller.

Abstract: Provided is a drive head (40), a drive assembly (20), and a process cartridge (10), wherein the drive head (40) is mounted to a gear (12), the drive head (40) comprises a shaft part (16), a claw (15), and a first elastic element (14), and the shaft part (16) is sleeved by the claw (15) which can move stretchably along the shaft part. The drive head (40), drive assembly (20), and process cartridge (10) have the advantage that the drive head (40) is hard to falling off.

Abstract: There are demands for stable connections of contact points between a process cartridge, including a development device, and an image forming device. A development contact point, a first contact point, and a second contact point are disposed in this order on the inside in a perpendicular direction with respect to an insertion direction in which a development device is inserted into an image forming apparatus.

Abstract: A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.

Abstract: An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.

Abstract: An image forming apparatus includes a main body, a drum cartridge removably attached to the main body, and a belt unit removably attached to the main body. The main body includes a drum power supply, a belt power supply, and a controller configured to start supplying power from the drum power supply to a drum memory of the drum cartridge, start supplying power from the belt power supply to a belt memory of the belt unit, stop supplying the power from the drum power supply to the drum memory after starting supplying the power from the drum power supply to the drum memory, and stop supplying the power from the belt power supply to the belt memory after starting supplying the power from the belt power supply to the belt memory.

Abstract: A process cartridge includes a photosensitive drum; a developing roller; a developer supplying roller, provided in contact with the developing roller; a driving force receiving portion provided at a shaft end of the supplying roller; a first driving force transmitting portion; a second driving force transmitting portion; flexible sheets provided adjacent to an engaging portion between the first portion and the second portion to intermittently contact the second portion with rotation of the second portion, wherein a rotational direction of the roller is opposite to that of the roller, and a peripheral speed of the roller is larger than that of the roller.

Abstract: A drum cartridge mountable to an image forming apparatus in a mounting direction, the drum cartridge including: a frame having an opening, the frame allowing a toner cartridge to be attached, and the frame including a housing configured to accommodate therein a toner and a first storage medium including a first electric contact; a photosensitive drum; and a second storage medium including a second electric contact and located at an outer surface of the frame, and in a state where the toner cartridge is mounted to the frame, the first storage medium is exposed via the opening and the second storage medium is aligned with the first storage medium in the mounting direction of the drum cartridge.

Abstract: A drawer includes: a photosensitive drum; and a frame to which a developing cartridge is attachable. The photosensitive drum is rotatable about a rotational axis extending in an axial direction. The photosensitive drum has an outer circumferential surface. The developing cartridge includes a developing roller having an outer circumferential surface. The developing cartridge is attachable to the frame in a state where the outer circumferential surface of the developing roller faces the outer circumferential surface of the photosensitive drum. The frame is configured to move the developing roller in a separation direction in response to movement in the axial direction of at least a portion of the developing cartridge attached to the frame. The separation direction is a direction in which the outer circumferential surface of the developing roller separates from the outer circumferential surface of the photosensitive drum.

Abstract: A cartridge including: a first unit including an image bearing member and a first portion, and configured to take a removal posture when the cartridge is to be removed from a main body; a second unit including a developer bearing member and a second portion, the second unit being movable between a first position where the developer bearing member is in contact with the image bearing member and a second position where the developer bearing member is separated from the image bearing member and where the second portion is in contact with the first portion, wherein when the first unit takes the removal posture, the second unit is located at the second position, and when the second unit is located at the second position, movement of the second unit in a direction, in which the developer bearing member is separated from the image bearing member, is restricted.

Abstract: An image formation apparatus according to an embodiment may include: an apparatus body; an image formation unit configured to form an image; a movable unit accommodated in the apparatus body and supporting the image formation unit; a guide part configured to guide the movable unit from an inside of the apparatus body in a pull-out direction; a first rotatable member provided to the apparatus body and configured to guide the movable unit in the pull-out direction; and a second rotatable member provided to the movable unit and configured to be engaged with the guide part at a position on an upstream side of the first rotatable member in the pull-out direction. In a state where the movable unit is guided by the first rotatable member with the movable unit being moved in the pull-out direction, the second rotatable member and the guide part are disengaged from each other.

Abstract: An image forming apparatus includes a main assembly and a cartridge attached to the main assembly in an attaching direction. The main assembly includes a movable member movable between first and second positions and having first and second engaging portions to engage with first and second protrusions on the cartridge, and an urging member urging the movable member from the second position to the first position. The first engaging portion has a surface-to-be-abutted, a first surface-to-be-supported, and a recessed surface, and the second engaging portion has a regulating surface and a second surface-to-be-supported.

Abstract: A process cartridge includes a photosensitive drum and a gear portion having gear teeth configured to receive a driving force from outside of the process cartridge. The gear portion includes an exposed portion exposed to outside of the process cartridge. A shortest distance from an axis of the photosensitive drum to a tooth tip of the exposed portion of the gear portion measured along a direction perpendicular to the axis of the photosensitive drum is no less than 90% and no more than 110% of a radius of the photosensitive drum.

Abstract: An image forming apparatus includes an apparatus main body; a cover member that is provided rotatable in a rotation direction about a rotation axis with respect to the apparatus main body, having an opening part, a fuser that fuses a toner image formed on each medium of media wherein the fuser is attached to the apparatus main body by being inserted through the opening part and detached from the apparatus main body by being pulled out of the opening part; and a sub cover member that has an surface portion and is attached to the fuser, wherein in a state in which the fuser is attached to the image forming apparatus, the surface portion of the sub cover is arranged within the opening part, the sub cover member moves in the rotation direction in correspondence with the rotation of the cover member.

Abstract: An image forming apparatus includes a mounting portion for mounting a process cartridge, the process cartridge including a first unit having an image bearing drum, and a second unit having a developing roller, the second unit being movable between a contact position in which the roller contacts the drum and a spaced position in which they are mutually spaced; an engageable member engageable with a force receiving portion provided on the second unit; wherein the engageable member is movable between a first position for maintaining the second unit in the spaced position by engaging with the force receiving portion, a second position for permitting movement of the second unit from the spaced position to the contact position; and a third position for permitting the process cartridge to be mounted, by being pressed by the process cartridge to retract, when the process cartridge is mounted to the mounting portion.

Abstract: An engaging portion 30 is provided which is engageable with a portion-to-be-engaged 11b a displaceable integrally with a developer receiving portion 11 with a mounting operation of a developer supply container 1 to displace 11 in an upward direction U to bring a receiving opening into communication with a discharge opening. An engaging portion 30 includes a first engagement surface 31a extending in the upward direction U as going toward a developer accommodating portion of the developer supply container 1, and a second engagement surface 32a provided at a position closer to the developer accommodating portion than the first engagement surface 31a. When the receiving opening in communication with a shutter opening, a height of an end of the first engagement surface 31a close to the developer accommodating portion is higher than the second engagement surface 32a.

Abstract: An image forming apparatus includes image forming stations including respective electrophotographic photosensitive drums; an image transfer belt contactable to the drums; image transfer rollers, contactable to the transfer belt to urge the belt to the drums for transferring the toner images from the drums onto the belt, the rollers being provided with respective rotational shafts about an axis of which the rollers are rotatable; and a slidable member slidable in a direction in which the stations are arranged to retract the rollers away from the corresponding drums, the slidable member being provided with inclined surfaces contactable to the shafts, the inclined surfaces being disposed at such positions that the rollers are retracted from respective drums sequentially with the movement of the slidable member in the direction.

Abstract: A process cartridge using an image forming apparatus, including a rotatable image bearing member having a circumferential surface; a developing unit configured to supply a developing agent to the image bearing member; and a cleaning member that cleans the circumferential surface, wherein the developing agent contains a toner including toner particles and a metal soap, the image bearing member includes a plurality of grooves formed on the circumferential surface to extend in a circumferential direction of the circumferential surface and to be arranged side by side in a rotation axis direction, and the plurality of grooves and portions between the grooves form concave-convex portions on the circumferential surface. The circumferential surface of the image bearing member had surface roughness Rz of 0<Rz?0.70 ?m and average interval Sm between concave-convex portions on the circumferential surface of 0<Sm?70.0 ?m.

Abstract: A developer cartridge according to one aspect is attachable to a photoconductor unit that comprises a photoconductive drum. The developer cartridge may comprise a main body having an opening, the main body comprising an electric circuit, a front cover configured to move to an opening position in which the opening of the main body is exposed and to a closing position in which the opening of the main body is closed, a first terminal electrically connected to the electric circuit, a photosensitive drum, and a developer cartridge comprising a developing roller, developing frame having a pressed portion, memory unit and second terminal. The front cover may include a pressing portion configured to press the pressed portion of the developing frame in a direction from the developing roller toward the photosensitive drum, and wherein the second terminal faces to the front cover when the front cover is in the closed position.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: An assembly for an electrophotographic image forming device includes a housing and a rotatable component. A bushing has an opening defined by an inner circumferential surface of the bushing. A shaft of the rotatable component is received in the opening such that the inner circumferential surface rotatably supports the shaft. A first mating feature is positioned on an outer surface of the bushing that is opposite the inner circumferential surface of the bushing. The first mating feature is positioned between an inner axial end of the bushing and an outer axial end of the bushing relative to a rotational axis of the rotatable component. The first mating feature of the bushing is in contact with a second mating feature on the housing. Contact between the first and second mating features defines an axial position of the bushing relative to the housing along the rotational axis of the rotatable component.

Abstract: A developing roller includes: a magnet roller including a roll part with a magnetic pole; a cylindrical sleeve that houses the magnet roller; a first flange connected to one end of the sleeve; a second flange connected to another end of the sleeve; a conductive shaft connected to a side of the second flange of the magnet roller; a first bearing that supports the first flange so that the first flange rotates relative to the magnet roller; and second bearings that support the second flange so that the second flange rotates relative to the conductive shaft. The second bearings are conductive, and are disposed at different positions along an axial direction of the conductive shaft.

Abstract: A photosensitive member unit includes a photosensitive member, a transfer roller, a mounting portion capable of mounting a development unit including a development roller, a first gear and a second gear each provided at one end of the photosensitive member in an axial direction of the photosensitive member, and a third gear provided at one end of the transfer roller in an axial direction of the photosensitive member and configured to engage with the second gear. The first gear, the second gear, and the third gear are helical gears. A direction in which helical teeth of the first gear are inclined is opposite to a direction in which helical teeth of the second gear are inclined, and the direction in which the helical teeth of the first gear are inclined matches a direction in which helical teeth of the third gear are inclined.

Abstract: A developer container includes a plurality of components combined together to form a space to store a developer. The plurality of components includes a first component and a second component. The developer container further includes a sealant to bond the first component and the second component, and a position regulator to regulate relative positions of the first component and the second component so as to maintain a distance between an adhesion portion of the first component and an adhesion portion of the second component.

Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first latch-receiving shelf is positioned on a first longitudinal end of the housing and a second latch-receiving shelf is positioned on a second longitudinal end of the housing. Contact surfaces on top portions of the first and second latch-receiving shelves are positioned to contact corresponding first and second latches in an image forming device. The contact surface of the first latch-receiving shelf is positioned lower than a first rotational axis of a first drive coupler of the toner cartridge and higher than a second drive coupler of the toner cartridge. The contact surface of the second latch-receiving shelf is positioned lower than at least a portion of a first electrical contact of the toner cartridge and higher than at least a portion of a second electrical contact of the toner cartridge.

Abstract: An image forming apparatus including a photosensitive member, a developing cartridge that has a developing member, a developing frame, an end member attached to the developing frame, and a restricting portion restricting a swing movement of the end member, and an apparatus body to which the developing cartridge is attachable. The apparatus body includes a movement unit moving the developing cartridge from a first position to a second position, a positioning portion engaging with the end member when the developing cartridge is located at the second position, and a restriction releasing portion acting on the restricting portion with a movement of the developing cartridge from the first position to the second position and releasing restriction of the swing movement of the end member, the restriction releasing portion being provided at a part of the apparatus main body excluding the movement unit.

Abstract: A process cartridge includes a photoreceptor drum that is disposed in a main body frame, and a charging roller unit that includes a charging roller disposed in parallel with an axial direction of the photoreceptor drum and is a separate body from the main body frame. The charging roller unit includes a protrusion. The main body frame includes a guide into which the protrusion is inserted in a state where the charging roller is spaced apart from the photoreceptor drum, and a positioner that is continuously formed at an end part of the guide on an opposite side to an insertion side of the protrusion and positions the charging roller at a position where the charging roller is in contact with the photoreceptor drum.

Abstract: A processing device includes: a frame that supports a photosensitive drum; a bearing member that biases a charge roller in the direction to be in contact with the photosensitive drum; and a holder that is switchable between a holding state where the charge roller is separated from the photosensitive drum and a canceled state where the holding state is canceled so that the roller is brought into contact with the photosensitive drum; wherein a canceling member is provided in at least one of inside the processing-device attachment and an attachment body attached to an image forming apparatus main body at a front side to cause the holder to shift from the holding state to the canceled state. The canceling member causes the holder to shift from the holding state to the canceled state when the attachment body is attached to the image forming apparatus main body at the front side.

Abstract: An image forming apparatus includes: a housing; a cover; a developing cartridge; and a drum cartridge including a drum frame, a photosensitive drum, a pressing member configured to press the developing roller to the photosensitive drum in a state where the developing cartridge is mounted to the drum frame, and a lock lever, the drum cartridge being mountable to an inside of the housing in a state where the developing cartridge is mounted to the drum cartridge, wherein in a state where the cover moves from the closed position to the opened position, the lock lever moves from a locked position at which the developing cartridge is prevented from being demounted from the drum frame to a non-locked position at which the developing cartridge is allowed to be demountable from the drum frame.

Abstract: An image forming apparatus includes a photosensitive drum, a developing roller, a cam, a developing motor, a first transmission mechanism, and a second transmission mechanism. The cam moves the developing roller between a contacting position where the developing roller is in contact with the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum. The developing motor drives both the developing roller and the cam, and is rotatable in a normal rotating direction and a reverse rotating direction. The first transmission mechanism engages power transmission from the developing motor to the developing roller when the developing motor rotates in the normal rotating direction, and disengages the power transmission when the developing motor rotates in the reverse rotating direction. The second transmission mechanism can engage power transmission from the developing motor to the cam, irrespective of the rotating direction of the developing motor.

Abstract: An image forming apparatus includes an apparatus main body, a process cartridge, a scanner unit, and a toner cartridge. The process cartridge is detachably mounted on the apparatus main body. The process cartridge includes: a photosensitive drum configured to rotate about a rotational axis extending in a first direction; and a development unit configured to supply toner to the photosensitive drum. The toner cartridge is configured to store toner. At least part of the photosensitive drum, at least part of the scanner unit, and at least part of the toner cartridge are aligned in a second direction in this order. The second direction is perpendicular to both the first direction and to a vertical direction. The at least part of the photosensitive drum, the at least part of the scanner unit, and the at least part of the toner cartridge overlap one another as viewed from the second direction.

Abstract: An image forming apparatus, having a casing, a cover, a first motor, a photosensitive drum, a second motor, a developing motor, a clutch, a contact/separation cam, a switching cam, and a controller, is provided. The controller conducts a first process, in which, when the cover is moved from an open position to a closed position, the controller drives the first motor to rotate the photosensitive drum without causing rotation of the developing roller; and a second process, in which, after a lapse of a first period since the controller started driving the first motor, the controller drives the second motor to move the contact/separation cam from the first phase to the second phase and move the switching cam from the first phase to the second phase causing the developing roller to be moved from the contacting position to the separated position while the photosensitive drum is rotating.

Abstract: An image forming apparatus includes an image forming section a casing, and an open-close section. The image forming section forms an image on a sheet. The casing internally houses the image forming section. The casing includes a first opening formed in a front surface of the casing and a second opening formed in an upper surface of the casing. The open-close section includes a first cover, a second cover, and an interlocking section. The first cover includes a first cover main body that opens and closes the first opening. The second cover includes a second cover main body that opens and closes the second opening. The interlocking section opens the second cover main body as the first cover main body is opened.

Abstract: An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.

Abstract: A toner set includes a color toner and a transparent toner that has a pressure phase transition property. The color toner and the transparent toner satisfy 1.0?tan ?1?4.0 and 1.2?tan ?1/tan ?2?3.0 where tan ?1 represents tan ? of the color toner at 100° C., and tan ?2 represents tan ? of the transparent toner at 100° C.

Abstract: An image forming apparatus includes: a drawer movable between an inside position and an outside position; a drum cartridge including a photoconductive drum rotatable about a first axis; and a developing cartridge including a developing roller rotatable about a second axis. The drum cartridge includes a first developing-roller guide pivotable between a first position where the first developing-roller guide guides the developing roller when the developing cartridge is mounted on the drawer with the drum cartridge being mounted on the drawer, and a second position where the first developing-roller guide guides the developing roller with the drum cartridge and the developing cartridge being mounted on the drawer. The second axis is located below the first axis in a state in which the drum cartridge and the developing cartridge are mounted on the drawer, and the first developing-roller guide is located at the second position.

Abstract: An image forming unit insertable into an image forming apparatus includes a photosensitive drum and a drum case supporting the photosensitive drum. The drum case includes a guide configured to (i) at least partially engage with a solid head of the image forming apparatus when inserted into the image forming apparatus along a first direction and (ii) guide the solid head in a second direction orthogonal to the first direction when the solid head is selectively repositioned along the second direction toward the photosensitive drum.

Abstract: A developing cartridge may include a developing roller and a casing capable of containing a developer material, a member having a first end portion and a second end portion, the member being movable together with the casing and the developing roller, and the member having a first hole extending in a direction between the first end portion and the second end portion; and a first lever movable relative to the casing between a first position and a second position, the first lever including one end portion that functions as the point of effort, an other end portion that functions as the point of application, and a cam surface that is located between the one end portion and the other end portion and that functions as a pivot point.

Abstract: An image forming apparatus includes a first developing cartridge including a first developing roller and a first projection, the first developing cartridge being detachably mounted to a first mounting portion of a frame such that the first developing cartridge is movable relative to the frame between a position where the first developing roller contacts a first photosensitive drum and the first projection is located in a first lower position and a position where the first projection is located in a first upper position above the first lower position. The apparatus also includes a first contacting member contactable with the first projection. The force applying portion is configured to apply a force to the first developing cartridge such that the first projection being held in the first upper position by the first contacting portion is moved to the first lower position.

Abstract: An image forming apparatus includes: a housing; a drawer, and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.

Abstract: An image forming apparatus including a main body casing, a cover, a drum cartridge, a developing cartridge, an intermediate transfer belt and a movable cam. The movable cam is movable among a first position when the cover is in the open position, a second position and a third position when the cover is in the closed position. In a case where the movable cam is in the first position, the photosensitive drum is in a first drum position spaced from the intermediate transfer belt, and the developing roller is in a first developing position spaced from the photosensitive drum. In a case where the movable cam is in the second position, the photosensitive drum is positioned toward the intermediate transfer belt from the first drum position. In a case where the cam is in the third position, the developing roller is positioned toward the photosensitive drum from the first developing position.

Abstract: A method for disassembling a developing device. The developing device includes a frame configured to store a developer, a developer bearing member, a regulation member configured to regulate the developer borne by the developer bearing member, and a fixing member configured to fix the regulation member to the frame. The fixing member has a holding portion configured to hold the regulation member. The developing device includes a cover portion attached to the regulation member and configured to cover at least a part of the holding portion. The disassembling method includes cover removing for removing at least a part of the cover portion to reduce the size of a region of the holding portion covered by the cover portion.

Abstract: An image forming apparatus includes a movement mechanism. The movement mechanism moves a pressing mechanism from a first position to a second position along with a start of an image forming operation and moves the pressing mechanism from the second position to the first position along with an end of the image forming operation, when image formation is carried out. The movement mechanism moves the pressing mechanism from the first position to the second position along with detection by a detection unit that a main body cover is opened, when the image formation is not carried out.

Abstract: An image forming apparatus includes a processing unit, a main frame, a drive source, and a door-type positioning panel. The processing unit performs at least part of image formation. The main frame supports the processing unit such that the processing unit is pulled out or housed. The drive source is provided on the main frame and connected to a first end of a processing drive shaft of the processing unit to provide rotative power. The door-type positioning panel positions and supports a second end of the processing drive shaft by using an insert hole. An end of the door-type positioning panel is supported by the main frame such that the panel swings on a support axis. The door-type positioning panel includes a fit hole that is closer to a swinging end of the panel than to the support axis and fits to a positioning shaft provided on the main frame.

Abstract: A process cartridge configured to be detachably installed to a main body of the imaging device includes a housing, and a photosensitive drum arranged in the housing. A drive coupler configured to receive a driving force from a drive head of the main body of the imaging device is provided at an end of the photosensitive drum. The process cartridge can be installed to the main body of the imaging device or be detached from the main body of the imaging device in a manner that the photosensitive drum rotation axis forms a variable included angle with respect to the drive head rotation axis. The installation of the process cartridge is facilitated, and the engagement of the drive coupler with the drive head of the imaging device is facilitated.