186results about "Electrographic process" patented technology

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.

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 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.

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.

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.

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 an image bearing member and a second unit including a developer bearing member. The second unit is swingable with respect to the first unit. The second unit includes a pressed portion to be pressed by a pressing member of the apparatus body. When viewed in an axial direction, (i) the swing axis and the pressed portion are arranged on opposite sides to each other with respect to a virtual straight line, (ii) the pressed portion, the swing axis, and the first axis are arranged in the named order in an interaxial direction, and (iii) a distance from the pressed portion to the swing axis in the interaxial direction is longer than a distance from the swing axis to the first axis in the interaxial direction.

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

An image forming apparatus includes a plurality of image forming units, a plurality of stations, a plurality of air supply ports, and an air supply duct. When image formation is performed in a full specification state in which all of the image forming units are installed in the stations, air is supplied from all of the air supply ports to all of the stations. When image formation is performed in a specified specification state in which a station to be used in which one of the image forming units is installed and an unused station in which none of the image forming units is installed are present, air is supplied to the station to be used from an air supply port corresponding to the station to be used, and air is not supplied to and is not exhausted from the unused station via another air supply port.

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.