328results about "Electrographic process" patented technology

A cartridge includes a holding portion movable, by movement of a developing member in an axial direction of the developing member, between a first position for stably holding a second unit at a spaced position and a second position for stably holding a second unit at a developing position. The cartridge also includes an urging portion for urging the holding portion in a direction from the second position toward the first position in the axial direction of the developing member. At least one of the first gear portion and the second gear portion is a helical gear. When the second gear portion is driven and rotated by the first gear portion, the holding portion is moved from the first position to the second position by the second gear portion receiving a force from the first gear portion. When the second gear portion is not driven by the first gear portion, the holding portion is moved from the second position toward the first position by an urging force of the urging portion.

A cartridge includes a first unit including a photosensitive member and a first frame; a second unit including a developing member and a second frame; a holding portion movable between a first position for holding the second unit at the separated position and a second position for holding the second unit at the developing position; a movable member; and an urging portion. the movable member is movable to a contact force receiving position, a separating force receiving position separating force receiving portion, a first retracted position, and a second retracted position. The urging portion urges the movable member placed at the first retracted position in a direction of moving the movable member toward the contact force receiving position, and urges the movable member placed at the second retracted position in a direction of moving the movable member toward the separating force receiving position.

An image forming apparatus forming an image on a sheet conveyed in a sheet conveyance direction includes a frame including a first side plate and a second side plate disposed in parallel in a width direction orthogonal to the sheet conveyance direction, an intake unit disposed on an outer side of the frame in the width direction and configured to draw air into an interior of the frame, an exhaust unit disposed between the first side plate and the second side plate and configured to discharge air outside of the frame, and a cooling object unit disposed on a path of the air which is drawn into the interior of the frame by the intake unit and moves toward the exhaust unit.

The present invention relates of an image forming apparatus for forming an image on a plurality of recording materials, the image forming apparatus comprising: a main assembly including a rail; a door configured to be movable between a closing position where an opening of the main assembly is closed and an opening position where the opening is open; an accommodating portion for accommodating the plurality of recording materials; feeding means for feeding the recording materials from an end side of the accommodating portion; and a cartridge supporting member provided above the accommodating portion with respect to a vertical direction, wherein the cartridge supporting member is movable, in a direction perpendicular to an axial direction of the feeding means, to a mounting and demounting position where a plurality of cartridges is detachably mountable outside the main assembly and to an image forming position where the plurality of cartridges is capable of forming the image inside the main assembly, wherein each of the plurality of cartridges includes a photosensitive drum and is detachably mountable to the cartridge supporting member, wherein the rail is configured to be translated in interrelation with the door and the cartridge supporting member is moved upward and downward with raising and lowering of the rail.

A process cartridge includes a first unit including an image bearing member configured to carry an electrostatic latent image, and a second unit including a developer bearing member configured to develop the electrostatic latent image carried on the image bearing member into a toner image, the second unit being capable of being mounted on the first unit in a mounting direction. The first unit includes a moving member that moves the second unit mounted on the first unit at a mounting position to a detachment position. The second unit includes a storage unit that stores information about the second unit. The moving member is disposed on a first side of the process cartridge in a longitudinal direction of the image bearing member. An electrode of the storage unit is disposed on a second side of the process cartridge in the longitudinal direction.

An attachment structure includes a positioning shaft of a functional expansion unit attachable to an electronic device; a lock member of the functional expansion unit; a positioning hole, into which the positioning shaft of the functional expansion unit is insertable in an attachment direction, in the electronic device; a lock-engageable part of the electronic device, the lock-engageable part engageable with the lock member; and a cover to cover the positioning shaft, the positioning hole, the lock member, and lock-engageable part. The cover includes a lock restricting part on an inner face thereof. The lock restricting part restricts movement of the lock member in an unlocking direction.

A cartridge includes a photosensitive drum rotatable about an axis extending in an axial direction; a memory including a storing element configured to store information, a memory contact electrically connected to the storing element, and a substrate having a surface on which the memory contact is provided; and a frame which supports the photosensitive drum, on which the substrate is mounted, and which includes a first end with respect to the axial direction and a second end opposite from the first end. The frame includes a container provided with an accommodating chamber for accommodating a developer collected from the photosensitive drum and with an opening communicating with the accommodating chamber and includes a mounting member mounted on the container so as to cover the opening. The mounting member includes a supporting portion for supporting the substrate.

The present invention relates of an image forming apparatus for forming an image on a plurality of recording materials. The image forming apparatus comprises an apparatus main assembly including a side having an opening; an accommodating portion for accommodating the plurality of recording materials, the accommodating portion being insertable into and removable from the apparatus main assembly from the side of the apparatus main assembly; feeding means for feeding the recording materials from an end side of the accommodating portion; a transfer member; and a cartridge supporting member configured to support a plurality of cartridges so that the plurality of cartridges is detachably movable upward, the cartridge supporting member being provided above the accommodating portion with respect to a vertical direction, wherein the cartridge supporting member is movable, in a direction perpendicular to an axial direction of the feeding means, to a mounting and demounting position, an image forming position, and an inside position where the cartridge supporting member is moved upward from the image forming position. In a state where the cartridge supporting member is at the mounting and demounting position, the plurality of cartridges is exposed to an outside of the apparatus main assembly, and in a state where the cartridge supporting member is at the image forming portion, a photosensitive drum contacts the transfer member so that a developer image formed on the photosensitive drum is transferable onto the transfer member. The cartridge supporting member is inclined with respect to a horizontal direction at the image forming position and the inside position, the transfer member is provided between the cartridge supporting member and the accommodating portion with respect to the vertical direction, and when the cartridge supporting member is pulled out, the cartridge supporting member passes through the opening and slides obliquely downward.

An image forming apparatus includes an apparatus main body, a first unit configured to be attached to the apparatus main body, a second unit configured to be attached to the apparatus main body and configured (1) to be drawn out from the apparatus main body together with the first unit and (2) to be drawn out from the apparatus main body while the first unit is accommodated in the apparatus main body, and a restriction structure configured to restrict the first unit from being drawn out from the apparatus main body in a case where the second unit is drawn out from the apparatus main body while the first unit is accommodated in the apparatus main body.

An image forming apparatus includes a positioning portion, a restriction portion, and a return portion. In contrast to an engagement portion provided on one of an apparatus main body and a pullout portion, an engaged portion provided on the other of the apparatus main body and the pullout portion. When the pullout portion is in an attachment position, first and second contact portions are in contact with the engagement portion. The contact between the first contact portion and the engagement portion restricts movement of the pullout portion in an insertion direction. The contact between the second contact portion and the engagement portion restricts movement of the pullout portion in a pullout direction. The restriction portion restricts the movement of the pullout portion when the pullout portion reaches a restricted position. The return portion moves the pullout portion to the attachment position when the pullout portion is in the restricted position.

An image forming apparatus is provided, including a housing; a drum cartridge; a developing cartridge; a drawer movable between an inner position and an outer position; and a lock member provided on the drawer and movable between a lock position at which the lock member locks the drum cartridge to the drawer, and a release position at which a lock between the drum cartridge and the drawer is released. The lock member includes an operation portion for moving the lock member between the lock position and the release position. The developing cartridge includes a cover member that covers at least a portion of the operation portion in a state in which the drum cartridge is mounted to the drawer, and the developing cartridge is mounted to the drum cartridge.

To provide one embodiment of an image formation device that comprises a mobile unit which can have a cartridge with memory means attached / detached and also has intermediate contact constitution for electrically connecting the memory means and a main body electric contact of a device body to each other.SOLUTION: A mobile unit is movable relative to a device main body between a first position where an image can be formed and a second position where a cartridge is attachable / detachable, wherein a unit electric contact is provided on an upstream-side end face of a frame body located in a direction in which the mobile unit is separated from the device body in a first direction, and a main body electric contact of the device body is provided at a part of the device body which faces the upstream-side end face of the frame body when the mobile unit is at the first position, and also comes into electric contact with the unit electric contact when the mobile unit is at the first position and leaves the unit electric contact when the mobile unit is at the second position.SELECTED DRAWING: Figure 16

A process cartridge includes: a drum unit including a drive member and a photosensitive drum; a frame body having an opening through which a part of the drum unit is exposed; a shutter member shielding the photosensitive drum exposed through the opening; and a link member connecting the frame body and the shutter member. The shutter member is movable from a shielding position to an open position. A joint between the link member and the shutter member is provided to a part of the shutter member. The link member has a first portion extending from the joint toward the outside of the shutter member. In the shielding position, at least a part of the first portion overlaps with the drive member in a drum axis direction and at least a part of the first portion overlaps with the drive member in a view in an opening direction of the opening.

An image forming apparatus includes a unit that is attachable and detachable with respect to a main body frame, and a lock mechanism. The lock mechanism includes a handle portion, a lock member that is swingably disposed on the unit and has a hook portion engageable with an engaged portion formed on the main body frame, and a first biasing member that biases the lock member in a first direction in which the hook portion engages with the engaged portion. Due to the handle portion being moved in the detaching direction, the lock member is caused to swing against a biasing force of the first biasing member in a second direction opposite to the first direction so as to release engagement between the hook portion and the engaged portion. The lock member includes a restraint portion that restrains swinging of the lock member.

An image formation device (100) comprises a unit (30) that can be attached to and detached from a body frame (101), and a lock mechanism (40). The lock mechanism (40) has a grip part (37) that can move reciprocally in the attachment direction and the detachment direction of the unit (30), a lock member (41) that is swingably positioned in the unit (30) and has a hook part (41b) capable of engaging with an engagement-receiving part (50) formed on the body frame (101), and a first biasing member (43) that biases the lock member (41) in a first direction, in which the hook part (41b) engages with the engagement-receiving part (50). Due to the grip part (37) being moved in the detachment direction, the lock member (41) swings in a second direction that is the opposite of the first direction, in opposition to the biasing force of the first biasing member (43), and the engagement of the hook part (41) and the engagement-receiving part (50) is released. The lock member (41) has a restriction part (41e) that restricts the swinging of the lock member (41) in the second direction while the grip part (37) is not moved in the detachment direction.

An electrophotographic photoreceptor includes a conductive substrate, a charge-generating layer provided on or above the conductive substrate, a charge transport layer provided on the charge-generating layer and containing inorganic oxide particles, the charge-generating layer and the charge transport layer forming a photosensitive layer, and an inorganic protective layer provided on the photosensitive layer, in which in a cross-sectional observation of the charge transport layer, the relationship between the percentage area A of inorganic oxide particles contained in a surface level and the percentage area B of inorganic oxide particles contained in an inner level satisfies the percentage area A>the percentage area B of the charge transport layer, with the boundary therebetween at ½ the thickness of the charge transport layer.

The application provides a processing box, which comprises a box body, a developing roller, a photosensitive drum and a guide piece. The developing roller is installed on the box body, and a developing roller gear is arranged on the developing roller. The photosensitive drum is installed on the box body, and a transmission piece and a photosensitive drum gear are arranged on the photosensitive drum. The photosensitive drum gear is engaged with the developing roller gear. The guide piece is installed on the shaft core of the developing roller or the box body. In the axial direction of the photosensitive drum, the guide piece is located on the side, away from the photosensitive drum, of the transmission piece. The guide piece has a protrusion. The protrusion has a first position and a second position. When the protrusion is located at the first position, the protrusion can be connected with the peripheral gear of the driving head in the electrophotographic imaging equipment. The protrusion can be driven from the first position to the second position by the peripheral gear. When the protrusion is located at the second position, the protrusion is disconnected with the peripheral gear. The processing box can reduce the influence of the driving force of the driving head in the electrophotographic imaging equipment and prolong the service life of the driving head.

The present invention discloses a driving assembly, which can be detachably installed in an image forming device having a driving head, and the driving assembly comprises: a main body having an axis and being rotatable around the axis; a power receiving claw installed in the main body; a flange component, which can receive the driving force from the power receiving claw and rotate; and a control mechanism capable of operating the power receiving claw to move in a direction perpendicular to the axis direction of the main body. The technical problem in the prior art that the power receiving part may be stuck in the process of deflection due to repeated deflection and cannot be normally engaged with the driving head of the image forming device is solved.

A cartridge unit configured to be detachably attached to an apparatus body of an image forming apparatus includes a first unit including a photosensitive drum, a frame, a developing roller, and a driving-force transmission portion, and a second unit including a memory and a holder, the second unit being detachably attached to the first unit and configured to accommodate developer. The frame includes a bottom surface that extends in an axis direction, and a first side wall that extends from the bottom surface in an intersecting direction that intersects the axis direction, and that is positioned, in the axis direction, inside with respect to the driving-force transmission portion and outside with respect to the second unit attached to the first unit. The memory is disposed outside with respect to the first side wall in the axis direction when the second unit is attached to the first unit.

This prevents deformation of at least one of the engaging portion and the engaged portion from affecting the positioning of the tray relative to the device body. [Solution] The image forming apparatus has an engagement portion on one of the apparatus body and the pull-out portion, and a engaged portion on the other, which includes a first contact portion and a second contact portion, and when the pull-out portion is in the mounting position, the first contact portion, the second contact portion and the engagement portion come into contact, restricting the movement of the pull-out portion in the insertion direction by the contact between the first contact portion and the engagement portion, and restricting the movement of the pull-out portion in the pull-out direction by the contact between the second contact portion and the engagement portion; a restricting portion that comes into contact with the engagement portion when the pull-out portion reaches a restricted position downstream of the mounting position and restricts the movement of the pull-out portion in the insertion direction; and a return portion that comes into contact with the engagement portion when the pull-out portion is in the restricted position and moves the pull-out portion from the restricted position to the mounting position by the weight of the pull-out portion.

To solve the problem in which: it is demanded to stabilize the position of a cartridge in the course of mounting of the cartridge to an apparatus main body and before a part to be positioned of the cartridge is engaged with a positioning part of the apparatus main body.SOLUTION: An image forming apparatus has a cartridge that has a part to be positioned and an apparatus main body that allows mounting of the cartridge and has a positioning part. The apparatus main body has a regulation part on the upstream side of the positioning part in a mounting direction of the cartridge. The cartridge has a part to be regulated on the upstream side of the part to be positioned in the mounting direction. The part to be positioned is engaged with the regulation part of the apparatus main body before being engaged with the positioning part, and thereby a movement of the cartridge in an orthogonal direction is regulated. The part to be regulated is engaged with the regulation part before the part to be positioned is engaged with the positioning part of the apparatus main body, and thereby the movement of the cartridge in the orthogonal direction is regulated.SELECTED DRAWING: Figure 12

The present disclosure provides a process cartridge chip and a process cartridge. The process cartridge is detachably installed on a main body of an image-forming apparatus. The process cartridge chip includes a first grounding portion and a second grounding portion electrically connected to the first grounding portion. The first grounding portion is connected to a reference-ground supply part disposed at the main body of the image-forming apparatus by electrically connecting to a first connecting part, in order to be connected to a potential reference point provided by the reference-ground supply part. The second grounding portion is connected to the reference-ground supply part by electrically connecting to a second connecting part, wherein the first connecting part is different from the second connecting part, the second connecting part is not included in the first connecting part, and the first connecting part is not included in the second connecting part.

An example process cartridge includes a developing unit, a photosensitive unit, and a hinge to connect the developing unit to the photosensitive unit to be pivotable between a direction in which a developing roller approaches a photosensitive drum and a direction in which the developing roller separates from the photosensitive drum. The hinge includes a driving-side hinge to connect driving ends of the photosensitive unit and the developing unit to be pivotable. The driving-side hinge has a spacing.