131results about "Electrographic process" patented technology

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.

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

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.

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.

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 further develop a prior art.SOLUTION: A cartridge has: a first unit including a photoreceptor and a first frame body; a second unit including a developing member and a second frame body; a holding part movable between a first position to hold the second unit at a separation position and a second position to hold the second unit at a developing position; a moving member; and an urging part. The moving member is movable to a contact force receiving position, a separation force receiving position, a first retreat position, and a second retreat position moving in a direction separating from the separation force receiving position to the contact force receiving position. The urging part urges the moving member at the first retreat position in a direction directed to the contact force receiving position, and urges the moving member at the second retreat position in a direction directed to the separation force receiving position.SELECTED DRAWING: Figure 303

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 image forming apparatus includes an image forming unit, a fan, a duct including an air intake port, an air discharge port, and a body portion having a tubular shape and forming an air passage through which air taken in through the air intake port is flown to the air discharge port, the body portion including a holed wall portion to which a plurality of through holes are formed, the plurality of through holes being passed through between an inner surface, forming the air passage, of the holed wall portion and an outer surface, that is on an opposite side from the inner surface, of the holed wall portion, and a noise absorbing member attached to the outer surface of the holed wall portion so as to cover the plurality of through holes, the noise absorbing member having a noise absorbing property.

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.

To prevent a user from unintentionally operating a rotation lever without impairing the workability of a service engineer. [Solution] The device comprises a front door that covers the front side of the device main body, a movable member that is movable relative to the device main body, an operating lever that is provided on the front side of the device main body and rotates around an axis between a locked position that locks the movable member and an unlocked position that releases the lock, the operating lever being covered by the front door and becoming accessible when the front door is opened, and a restricting member that is displaced between a restricting position that restricts the rotation of the operating lever and an allowing position that allows the rotation of the operating lever.

The present application relates to a kind of processing box chip and processing box, the processing box chip is installed on processing box, the processing box is detachably installed on the body of image forming device, the processing box chip includes: first ground and the second ground electrically connected with first ground.The first ground is used to provide the reference ground providing component by being electrically connected with the first connecting component to access the body, to realize the potential reference point provided by accessing reference ground providing component;Second ground is used to access reference ground providing component by being electrically connected with the second connecting component, wherein, the first connecting component is different from the second connecting component, the second connecting component is not included in the first connecting component, and the first connecting component is not included in the second connecting component.In this way, the grounding stability of processing box chip can be improved.

An image forming apparatus includes a rotatable image bearing member, a developing unit to develop an electrostatic latent image at a developing portion, a transfer unit to transfer a developer image to a recording member at a transfer portion; and a brush provided with a plurality of fibers contacting the image bearing member at downstream of the transfer portion and upstream of the developing portion in a rotational direction of the image bearing member. An average contacting pressure of the brush per one fiber to the image bearing member is smaller than a depositing force of the developer not transferred to the recording member to the image bearing member. As the brush in a state of not in contact with the image bearing member is viewed from a free end side of the fibers, an average number of the fibers included in a circumference of a diameter of 100µm is more than one.

To achieve a mechanism for adjusting a height of a body while suppressing costs.SOLUTION: A base member 61 has a first open hole 61a. A first nut 63 is fixed to an upper part of the base member 61 and has a first screw hole 63a communicated with the first open hole 61a. A coupling member 64 is coupled to the base member 61 in a state of holding the first nut 63 between the base member 61 and itself, and has a second open hole 64a communicated with the first screw hole 63a. A bolt part 621 of a support leg member 62 is fitted to the first screw hole 63a in a state of being inserted into the first open hole 61a, the first screw hole 63a and the second open hole 64a. A second nut 65 is fastened to a part on the bolt part 621 which protrudes upward from the second open hole 64a, for holding the coupling member 64 between itself and the first nut 63, and fixing the bolt part 621 to the coupling member 64.SELECTED DRAWING: Figure 5

A process cartridge includes: a photoconductive unit; a developing unit coupled to the photoconductive unit and pivotable to a developing position and a release position; and an elastic member that biases the developing unit toward the developing position. The nip control member is switchable to a nip separation position in which the developing unit is maintained at the release position and a nip formation position which allows the developing unit to pivot to the developing position. The switching member switches the nip control member from the nip separation position to the nip formation position when the developing roller of the developing unit rotates in the image formation direction. When the nip control member is switched from the nip formation position to the nip separation position, the rotational power control member prevents or reduces rotational power transmission between the switching member and the developing roller.

A cartridge a developing member and an electrode portion electrically connected to the developing member. An electrode cover member includes an electrode cover portion capable of covering the electrode portion, the electrode cover member being movable between a first position in which the electrode cover portion covers the electrode portion and a second position in which the electrode is exposed more to outside by the electrode cover portion than in the first position. A first engaging portion is engaged with the electrode cover member to hold the electrode cover member in the first position when the electrode cover member is in the first position. A second engaging portion is engaged with the electrode cover member to hold the electrode cover member in the second position when the electrode cover member is in the second position.

A cartridge includes a casing, a photosensitive drum rotatably supported by the casing, a charging roller rotatably supported by the casing, and a developing roller rotatably supported by the casing. A shield member is supported by the casing and including a shield portion capable of covering a photosensitive member, the shield member being movable between a first position in which the shield portion covers the photosensitive member and a second position in which the photosensitive member is more exposed to outside of the cartridge by the shield portion than when the shield member is in the first position. An engaging portion is engageable with the shield member to hold the shield member in the second position when the shield member is in the second position, and a force receiving portion is provided for receiving an external force to disengage the engagement between the engaging portion and the shield member.

An image forming apparatus includes an apparatus body in which image formation is performed, an opening and closing member that is openable and closable with respect to the apparatus body, a first locking portion that is provided on one side of the opening and closing member and that locks the opening and closing member while sliding with respect to a locking target portion on one side of an apparatus body side, and a second locking portion that is provided on the other side of the opening and closing member and that locks the opening and closing member via a locking target portion on the other side of the apparatus body side in a state where there is a sliding resistance smaller than a sliding resistance generated in a case where the first locking portion slides with respect to the locking target portion on the one side or a state where there is no sliding resistance.

A base member includes a first through-hole. A first nut is fixed to an upper portion of the base member and includes a first screw hole that is in communication with the first through-hole. A coupling member is coupled to the base member in a state where the first nut is sandwiched between the coupling member and the base member and includes a second through-hole that is in communication with the first screw hole. A bolt portion of a support leg member is fit into the first screw hole while being inserted into the first through-hole, the first screw hole, and the second through-hole. A second nut is fastened to a portion of the bolt portion that protrudes upwardly from the second through-hole, to fix the bolt portion to the coupling member as well as sandwich the coupling member between the second nut and the first nut.

To provide an image forming apparatus that can suppress uneven airflow velocity from the air outlet without increasing the size of the housing. [Solution] The image forming apparatus includes an intake fan 41 provided on the side wall of the housing, an air outlet 51 opening toward the developing apparatus, an extension 52 extending from the intake fan 41 toward the air outlet 51 along the side wall, and a connecting portion 53 connecting the extension end 52A of the extension 52 to the air outlet 51, and a third duct 44 that guides air drawn in from outside the housing by the intake fan 41 to the developing apparatus, and a guide portion 54 provided inside the connecting portion 53 that guides a portion of the airflow flowing into the connecting portion 53 toward the upstream side in the extension direction of the extension 52 at the air outlet 51.

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.

The cartridge includes a frame, a photosensitive drum, and a rack. The photosensitive drum is supported by the frame and is rotatable about its axis. The rack has one or more teeth at least partially exposed so as to face an axis of the photosensitive drum. The rack is provided on a side of the cartridge in a direction of the axis of the photosensitive drum.

To provide an image forming device capable of stably ensuring grounding via a hinge mechanism for rotatably fitting a door to a device body.SOLUTION: A hinge plate 41 has a conductive abutment 60. A support plate 51 has a conductive abutted part 70 abbutable against the abutment 60. The abutment 60 and the abutted part 70 abut against each other when a front door 40 is closed, and are separated from each other when the front door 40 is opened. The abutment 60 collides with and abut against the abutted part 70 when the front door 40 is closed. When the abutment 60 abuts against the abutted part 70, the abutted part 70 is elastically deformed to come into contact with the abutment 60 at fixed contact pressure. Specifically, in addition to grounding by contact between the lower end surface of an upper cylindrical part 111 of the support plate 51 affected by application of a load of the front door 40 when the front door 40 is in a closed state and the upper end surface of a lower cylindrical part 112 of the hinge plate 41, grounding is ensured by abutment between the abutment 60 provided in a door side plate part 412 and the abutted part 70 provided in a body side plate part 512.SELECTED DRAWING: Figure 9