Abstract: A coupling structure is provided in an imager forming apparatus that forms an image on a recording material and configured to couple a first member and a second member. The second member includes a sheet metal having an insulative layer on a surface of a metal layer. A first conductive portion is formed in the first member. A second conductive portion includes a projection formed by press working in the second member. A coupling portion couples the first member and the second member in a state in which at least a part of the first conductive portion and at least a part of the second conductive portion are contacted with each other.

Abstract: A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.

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: An image forming apparatus includes an image forming unit configured to form an image on a recording material, and a printed circuit board including a voltage generation unit mounted thereon which is configured to generate a voltage to be applied to the image forming unit. A conductive member is provided on the printed circuit board, to which the voltage generated by the voltage generation unit is applied. An elastic member, including an arm portion biased toward the conductive member and configured to connect the conductive member and the image forming unit to each other. A holding unit is configured to hold the arm portion of the elastic member at a position where the arm portion is not in contact with the conductive member.

Abstract: An image forming apparatus includes an image carrying member, an intermediate transfer belt, a primary transfer roller, a first belt support roller, a secondary transfer roller, a second belt support roller, a current feeder, a controller, a current sensor, and a rectifier. The current sensor has a lead member. The rectifier shuts off a current passing from the second belt support roller to the ground if the voltage on the second belt support roller is less than a predetermined reference voltage. The controller controls the output current such that the secondary transfer current has a current value resulting from subtracting a leak current from the output current and, when the lead member is in a conducting state, keeps the voltage on the second belt support roller less than the reference voltage.

Abstract: An image forming apparatus includes an image formation unit, a casing, a sheet discharge unit, a supporting portion, a first electric board, a second electric board, and a connecting cable. The first electric board is disposed such that the first electric board does not overlap the supporting portion in a width direction when viewed in the vertical direction. The second electric board is disposed such that the second electric board does not overlap the supporting portion in the width direction when viewed in the vertical direction. The second electric board is disposed on a same side in the width direction as the first electric board with respect to the supporting portion when viewed in the vertical direction. At least a part of the second electric board overlaps the first electric board in the vertical direction and the sheet discharge direction when viewed in the width direction.

Abstract: An image forming apparatus includes an apparatus body, and an opening/closing cover configured to expose an opening portion of the apparatus body by being opened. The apparatus body includes a main body frame, a plurality of conveyance units being detachably attached to the main body frame through the opening portion, a control board configured to control the plurality of conveyance units, and a relay board configured to be electrically connected to the control board. The plurality of conveyance units respectively include a plurality of first connectors. The relay board includes a plurality of second connectors that are arranged to face the opening portion and that are configured to be connected to the plurality of first connectors, the relay board being arranged at a position not interfering with attachment/detachment loci in which the plurality of conveyance units are attached to and detached from the main body frame.

Abstract: A connector member connectable to a heating unit inside a heating roller of a fixing device includes a cover having a recess into which an end of a substrate of the heating unit in a first direction parallel to a rotation axis of the heating roller can be inserted, and an energizing terminal stored in the cover and including a contact portion on one side of the recess and to be in contact with a contact point on the substrate, and a connecting portion to which a conducting wire for receiving electric power is connected and located on the other side of the recess.

Abstract: An image forming apparatus that forms an image on a recording material includes a frame body, an image forming unit, a first electric component unit, a first electric component board, a second electric component unit, and a second electric component board. The second electric component board communicates with the first electric component board and controls the image forming unit. The first electric component unit pivots about a first pivot axis positioned on a first side in a width direction. The second electric component unit pivots about a second pivot axis positioned on a second side in the width direction. When the first electric component unit and the second electric component unit are in closed states, the second electric component unit is positioned between the first electric component unit and the image forming unit in a front-back direction of the image forming apparatus.

Abstract: In a cartridge, a developing roller is configured to rotate around a first rotational axis extending in a predetermined direction and to carry developer thereon, the developing roller having a first end and a second end apart from each other in the predetermined direction, a from-first-to-second direction being defined along the predetermined direction as being directed from the first end to the second end. A developing electrode is formed of a conductive material and is configured to be electrically connected to the developing roller, the developing electrode including a main part and a protruding portion protruding from the main part in the from-first-to-second direction. A detection body is formed of an insulating material and is rotatably supported by the protruding portion, the detection body including a first opening that exposes part of the protruding portion and a covering portion covering part of the protruding portion.

Abstract: An image forming apparatus includes an apparatus main body including an electric substrate and first and second main body electrical contacts electrically connected to the electric substrate, and a cartridge detachably attached to the apparatus main body, wherein the cartridge includes first and second process members, and first and second cartridge electrical contacts electrically connected to the first and second process members, respectively. The apparatus main body includes a common holding member holding a first end portion of the first main body electrical contact and a second end portion of the second main body electrical contact, wherein the holding member is configured to move between a contact position at which the first and second end portions contact with the first and second cartridge electrical contacts, respectively, and a separation position at which the first and second end portions are separated from the first and second cartridge electrical contacts, respectively.

Abstract: A heater assembly includes a tubular body, a heater, and a support member. The tubular body is formed in a tubular shape and has a length that extends longitudinally. The heater is received within the tubular body. The heater provides thermal energy in response to being electrically energized. The heater includes a first surface side extending laterally and longitudinally along an inner peripheral surface of the tubular body. The heater includes n electrical contact, through which electrical energy is supplied to the heater. The support member is coupled to the heater and extends longitudinally. The support member defines an opening that exposes the electrical contact. The support member is configured to bend to facilitate coupling the heater to the support member.

Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.

Abstract: A heating device includes a heating roller that includes a resistance heating layer, and a connection power feeder that is mounted on an end portion of the heating roller, is connected to the resistance heating layer, and feeds power to the resistance heating layer, in which the connection power feeder includes an annular frame that is disposed to be concentric with the heating roller and is conductively connected to the resistance heating layer, a power feed shaft of which a portion is disposed in the frame and which feeds power, plural rolling bodies that roll while being in conductive contact with an inner peripheral surface of the frame and an outer peripheral surface of the power feed shaft, and a non-conductive cover that holds and covers the frame and the rolling bodies in a state where a portion excluding the portion of the power feed shaft is exposed, and the connection power feeder excluding the power feed shaft is mounted on the heating roller so as to be integrally rotated with the heating roller.

Abstract: A developing cartridge includes a storage medium. A first contact portion is provided in a photoconductor unit and configured to be electrically connected to the storage medium. A second contact portion is provided in an apparatus body. The photoconductor unit is configured to, in a case of attaching the photoconductor unit to the apparatus body, move from a first position to a second position while being guided by a guide member and then move from the second position to a third position below the second position. At least one of the first contact portion and the second contact portion is capable of being displaced such that engagement between the first contact portion and the second contact portion is performed while the photoconductor unit moves by being guided by the guide member, and the engagement is maintained while the photoconductor unit moves from the second position to the third position.

Abstract: An image forming apparatus includes: a main frame; a developing cartridge including a casing, a storage medium having an electrical contact surface, and developing roller; a photosensitive drum contactable with the developing roller; an electrical connector contactable with the electrical contact surface; a separation mechanism; and a controller configured to communicate with the storage medium via the electrical connector. The separation mechanism is configured to move the casing relative to the main frame in a separating direction in which the developing roller separates from the photosensitive drum. The controller is configured to perform: moving, by controlling the separation mechanism, the casing relative to the main frame in the separating direction; determining, in response to performing the moving, whether communication with the storage medium is established; and outputting, when determining in the determining that the communication with the storage medium is not established, an error.

Abstract: A process cartridge is provided. The process cartridge is detachably mounted in an image formation apparatus configured with a power output unit that is swingable, an outer circumference of the power output unit contains a recessed portion. The process cartridge includes: a power receiving unit, comprising a wheel hub and a power receiving member connected with the wheel hub, the power receiving member being engaged with the power output unit to receive a driving force; where the wheel hub comprises a hollow cylinder portion accommodating the power output unit; where the power receiving member includes a fixing protrusion, the fixing protrusion is engaged with the recessed portion of the power output unit to receive the driving force; where the power receiving unit further comprises a bias part, the bias part applies a bias force to drive the power output unit to move to engage with the fixing protrusion.

Abstract: A coupling structure is provided in an imager forming apparatus that forms an image on a recording material and configured to couple a first member and a second member. The second member includes a sheet metal having an insulative layer on a surface of a metal layer. A first conductive portion is formed in the first member. A second conductive portion includes a projection formed by press working in the second member. A coupling portion couples the first member and the second member in a state in which at least a part of the first conductive portion and at least a part of the second conductive portion are contacted with each other.

Abstract: A toner container according to one example embodiment includes a plurality of electrical contacts for contacting corresponding electrical contacts in an image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are accessible from below at the bottom of the body by the corresponding electrical contacts in the image forming device when the toner container is installed in the image forming device. The electrical contacts of the toner container are spaced from each other along a horizontal dimension that is orthogonal to a vertical dimension of the toner container. A nominal position of the horizontal dimension along which the electrical contacts are spaced from each other is angled relative to a front-to-rear dimension of the toner container and a side-to-side dimension of the toner container.

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 drum unit includes: a frame; a first photosensitive drum; a second photosensitive drum; a charger; and a storage medium. The frame includes: a first frame plate; a second frame plate spaced apart from the first frame plate in a first direction; a third frame plate connecting one end of the first frame plate to one end of the second frame plate; and a fourth frame plate connecting another end of the first frame plate to another end of the second frame plate. The first photosensitive drum and the second photosensitive drum are rotatably supported by the frame. The second photosensitive drum is spaced apart from the first photosensitive drum and positioned closer to the third frame plate than the first photosensitive drum to the third frame plate in a second direction. The storage medium has an electrical contact surface positioned at an outer surface of the fourth frame plate.

Abstract: The heater including a substrate, a first heat generation member, a second heat generation member having a length substantially a same in a longitudinal direction as a length of the first heat generation member, a third heat generation member having a length shorter than lengths of the first heat generation member and the second heat generation member in the longitudinal direction, and a fourth heat generation member having a length shorter than length of the third heat generation member in the longitudinal direction, wherein the first heat generation member, the second heat generation member, the third heat generation member and the fourth heat generation member are arranged on the substrate.

Abstract: An assembly for an image forming device includes an access door movable between an open position permitting replacement of a replaceable unit and a closed position. An electrical connector in the image forming device is movable between a retracted position and an extended position. In the retracted position the electrical connector is disengaged from a corresponding electrical connector of the replaceable unit when the replaceable unit is installed in the image forming device. In the extended position the electrical connector is engaged with the corresponding electrical connector of the replaceable unit. The electrical connector is operatively connected to the access door such that movement of the access door from the closed to the open position moves the electrical connector from the extended to the retracted position and movement of the access door from the open to the closed position moves the electrical connector from the retracted to the extended position.

Abstract: An image forming apparatus includes: a main body housing; a developing cartridge attachable to and detachable from the main body housing; a drum cartridge attachable to and detachable from the main body housing; and a developing guide for guiding attachment and detachment of the developing cartridge to and from the main body housing. The developing cartridge includes a developing roller and a developing memory for storing information. The drum cartridge includes a photosensitive drum. The developing guide is movable together with the developing cartridge between a first position where the developing roller is in contact with the photosensitive drum and a second position where the developing roller is separated from the photosensitive drum. The developing guide includes a developing memory terminal configured to be in contact with the developing memory in a state where the developing cartridge is attached to the main body housing.

Abstract: The fixing device includes a heating roller and a pressure roller. The heating roller has a rotating member, a heating member, and a support member. The heating member has a heater, a first terminal, and a second terminal. The heater generates heat by energization. The first terminal is connected to one end of the heater. The second terminal is connected to the other end of the heater. The first terminal protrudes from one end of the rotating member in the longitudinal direction of the rotating member and is hooked on a hook provided on the support member so as to be movable along the longitudinal direction. The second terminal protrudes from the other end of the rotating member in the longitudinal direction and is fixed to the support member so as not to be movable along the longitudinal direction.

Abstract: A cartridge includes: a housing; a storage medium having an electrical contact surface; and a holder movable relative to the housing. The holder includes a first holder member and a second holder member movable relative to the first holder member. The first holder member includes at least one pawl and holds the electrical contact surface at one end surface of the first holder member in a first direction crossing the electrical contact surface. The second holder member includes at least one corner part engageable with the at least one pawl to provide an engaging portion therebetween. The second holder member has a through-hole that is open at another end face of the second holder member in the first direction. The engaging portion is accessible from an outside of the holder through the through-hole.

Abstract: An image forming apparatus includes an apparatus body, a first unit, a second unit, a cover, and a restrictor. The apparatus body includes a body-side connection terminal. The first unit is detachably attached to the apparatus body. The second unit detachably attached to the first unit and includes a unit-side connection terminal. The cover covers the body-side connection terminal disposed in the apparatus body and is movable between a covering position at which the cover covers the body-side connection terminal and a retracted position at which the cover is retracted from the covering position. The restrictor restricts movement of the cover from the covering position to the retracted position in a state in which the first unit is detached from the apparatus body.

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 drum cartridge includes: a drum frame to which a developing cartridge is attachable; a photosensitive drum; and a first storage medium. The drum frame has one end portion and another end portion spaced apart from the one end portion in a first direction. The photosensitive drum is rotatable about a first axis extending in a second direction and is positioned at the one end portion of the drum cartridge. The first storage medium includes a first electrical contact surface. The first storage medium is positioned at an outer surface of the drum frame, the outer surface being exposed in a state where the developing cartridge is attached to the drum frame.

Abstract: An image forming apparatus includes an apparatus body, a photoconductor unit, and a developing cartridge. The apparatus body includes a controller and a body-side contact portion. The photoconductor unit includes a photoconductor, a charger, and a frame body. The developing cartridge includes a developing roller, a storage medium configured to store information, and a cartridge-side contact portion. The photoconductor unit includes a first contact portion configured to be electrically connected to the body-side contact portion, a second contact portion configured to be electrically connected to the cartridge-side contact portion, and a wiring portion electrically connecting the first contact portion and the second contact portion. The photoconductor unit further includes a separating member. The separating member is arranged to separate the charger and the part of the wiring portion when viewed in the rotational axis direction of the photoconductor.

Abstract: An image forming apparatus includes: a drum cartridge; a toner cartridge; a toner data electrical contact surface; a drum data electrical contact surface; and a controller. The drum cartridge includes: a drum memory storing data relating to the drum cartridge; and a first drum electrical contact for communication of data stored in the drum memory. The toner cartridge includes a board having: a first relay electrical contact for relaying the data stored in the drum memory; a toner memory storing data relating to the toner cartridge; and a first toner electrical contact for communication of data stored in the toner memory. The controller is configured to: read the data stored in the drum memory through the drum data electrical contact surface contacting the first relay electrical contact; and read the data stored in the toner memory through the toner data electrical contact surface contacting the first toner electrical contact.

Abstract: An image heating apparatus includes a first rotating member, a second rotating member to form a nip portion which sandwiches a recording material between the first rotating member and the second rotating member, a heater unit provided inside the first rotating member and having a heater for heating an image on the recording material sandwiched by the nip portion, and a sheet member provided to overlap a part of the heater and electrically connected to the heater. The sheet member includes a first sheet member connected to one end of the heater in a longitudinal direction of the heater and a second sheet member connected to the other end of the heater, the first sheet member extends from the one end of the heater in a direction crossing the longitudinal direction, and the second sheet member extends from the other end of the heater in the longitudinal direction.

Abstract: An image forming apparatus includes a frame side plate. A mounting surface of the frame side plate on which a first electrical board is mounted has a frame protruding plate. An electrical box has a box protruding plate overlapping a side surface of the frame protruding plate when assembling of the electrical box to the frame side plate is completed, and engaging portions for assembling protruding in a thickness direction from the box protruding plate. When the electrical box is assembled to the frame side plate, with the engaging portions for assembling in engagement with first engaged portions formed on a protruding side end of the frame protruding plate, the electrical box as a whole is turned around an axis parallel to an extending direction of the frame protruding plate with the engaged portions as a fulcrum, thereby restricting a trajectory of the electrical box during assembling.

Abstract: A developing cartridge may include: a casing; a developing roller extending in a first direction; a developing-roller gear; a coupling including a coupling gear; a first idle gear; a second idle gear; an agitator; a first agitator gear; and a protrusion. The developing-roller gear, the coupling, the first idle gear, the second idle gear, the first agitator gear, and the protrusion may be positioned at an outer surface of the casing. The protrusion may be positioned between a first axis of the coupling and a third axis of the first agitator gear in a second direction connecting the first and third axes. The protrusion may be positioned outside an addendum circle of the developing-roller gear, an addendum circle of the coupling gear, an addendum circle of the first idle gear, and an addendum circle of the second idle gear. The first agitator gear may be spaced apart from the protrusion in the first direction.

Abstract: A photoconductive drum for an electrophotographic image forming device according to one example embodiment includes a cylindrical drum member. A shaft defines a rotational axis of the photoconductive drum. An end cap is positioned at an axial end of the drum member. An electrical contact is positioned against an axially inboard side of the end cap. The electrical contact electrically connects the shaft to the drum member. The electrical contact includes a plurality of projections that contact an inner circumferential surface of the drum member. A plurality of grooves are formed in an outer circumferential surface of the end cap.

Abstract: An image formation apparatus according to an embodiment may include: a fixation unit detachable from a main body of the image formation apparatus; a movable guide member holding a first connector and movably provided to the main body; a second connector provided to the fixation unit; and an engagement portion provided around the second connector. Upon mounting the detachable unit to the main body, the engagement portion contacts the movable guide member to move the movable guide member to position the first connector held by the movable guide member to a fittable range where the first and second connectors can be fitted to each other. Upon fitting the first and second connectors to each other, the first connector contacts the second connector to move the movable guide member holding the first connector to align the first connector to the second connector.

Abstract: In an image forming apparatus, a tray unit to which a cartridge is detachably mounted, and that is configured to be capable of moving between an internal position situated within the apparatus main body and an external position situated outside, includes first and second side plates configured to support the cartridge, and they are each made of metal, and include a supporting portion and an outer side portion, the supporting portions includes positioning portions configured to come into contact with the cartridge to position the cartridge as to an image forming position. The apparatus main body includes first and second pressing members each capable of moving between pressing positions at which the cartridge is pressed, and separated positions separated from the cartridge. The first and second pressing members are disposed each intersecting with imaginary planes that is orthogonal to the longitudinal direction and intersect the positioning portions.

Abstract: A developing cartridge includes a storage medium. A first contact portion is provided in a photoconductor unit and configured to be electrically connected to the storage medium. A second contact portion is provided in an apparatus body. The photoconductor unit is configured to, in a case of attaching the photoconductor unit to the apparatus body, move from a first position to a second position while being guided by a guide member and then move from the second position to a third position below the second position. At least one of the first contact portion and the second contact portion is capable of being displaced such that engagement between the first contact portion and the second contact portion is performed while the photoconductor unit moves by being guided by the guide member, and the engagement is maintained while the photoconductor unit moves from the second position to the third position.

Abstract: Power receiving unit and process cartridge are provided. The power receiving unit of a process cartridge is detachably mounted in an image formation apparatus configured with a power output unit that is swingable. An outer circumference of the power output unit contains a recessed portion, and the power receiving unit is engaged with the power output unit to receive a driving force. The power receiving unit includes a protrusion. The protrusion is disposed inside the power receiving unit. The protrusion is engaged with the recessed portion of the power output unit to receive the driving force. When the power receiving unit moves along an axial direction thereof and is in a contact engagement with the power output unit, the protrusion abuts against a front end of the power output unit to cause the power output unit to be tilted and swung.

Abstract: A development device is attachable to and detachable from an apparatus main body in an inserting/drawing direction. The development device includes a holder portion, a hook, a lever portion, and an elastic arm portion. The holder portion supports a board connectable to a controller of the apparatus main body. The hook is engageable with a recess of the apparatus main body. The lever portion is provided with the hook. At least one elastic arm portion connects the holder portion and the lever portion. In a middle of an attachment to the apparatus main body, the hook interferes with the apparatus main body to shift the lever portion in a direction crossing the inserting/drawing direction and to elastically deform the elastic arm portion. When the hook is engaged with the recess, the elastic deformation of the elastic arm portion is released and the board is connected to the controller.

Abstract: An image forming apparatus includes: a main frame; a developing cartridge including a casing, a storage medium having an electrical contact surface, and developing roller; a photosensitive drum contactable with the developing roller; an electrical connector contactable with the electrical contact surface; a separation mechanism; and a controller configured to communicate with the storage medium via the electrical connector. The separation mechanism is configured to move the casing relative to the main frame in a separating direction in which the developing roller separates from the photosensitive drum. The controller is configured to perform: moving, by controlling the separation mechanism, the casing relative to the main frame in the separating direction; determining, in response to performing the moving, whether communication with the storage medium is established; and outputting, when determining in the determining that the communication with the storage medium is not established, an error.

Abstract: Provided is an image heating apparatus comprising: a first rotating member; a second rotating member that forms a nip with the first rotating member so as to nip the recording material therebetween; a heater that heats the nip; a conductive sheet member that is disposed so as to overlap with a part of the heater; and a restricting member that restricts relative positions between the sheet member and the heater. The restricting member is configured so as to restrict a relative movement between the sheet member and the heater in a first direction, which is a direction where the sheet member overlaps with a part of the heater, and to allow the relative movement in a second direction which is perpendicular to the first direction. A reinforcing land, that joins the heater and the sheet member, is disposed in a position that is electrically isolated.

Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.

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: 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 assembly for an image forming device includes an access door movable between an open position permitting replacement of a replaceable unit and a closed position. An electrical connector in the image forming device is movable between a retracted position and an extended position. In the retracted position the electrical connector is disengaged from a corresponding electrical connector of the replaceable unit when the replaceable unit is installed in the image forming device. In the extended position the electrical connector is engaged with the corresponding electrical connector of the replaceable unit. The electrical connector is operatively connected to the access door such that movement of the access door from the closed to the open position moves the electrical connector from the extended to the retracted position and movement of the access door from the open to the closed position moves the electrical connector from the retracted to the extended position.

Abstract: A contact-type power supply apparatus includes: a first cylindrical body; a second cylindrical body configured to surround the first cylindrical body, be disposed concentrically to the first cylindrical body, and be rotatable around a central axis of the first cylindrical body; an annular body configured to surround the first cylindrical body, be disposed concentrically to the first cylindrical body, be in non-contact with the second cylindrical body, and have an end surface being an inclined surface having a tapered shape; and a contact body configured to face the annular body in an axial direction of the first cylindrical body, be electrically connected to the second cylindrical body, rotate around the central axis around the first cylindrical body together with the second cylindrical body, have a contact surface that is in contactable with the inclined surface, and receive an electric potential of the annular body by sliding with the annular body.

Abstract: A developing unit, which is attachable to and detachable from a photosensitive member unit, includes: a developing roller; a housing in which a holding space that holds toner is formed; and a pressing receiving portion that receives pressing force from a pressing member. The housing includes a first bottom portion that projects toward an outer side of the holding space, and a second bottom portion that projects toward the outer side of the holding space, in a state in use. When viewed in a direction of a rotation axis of the developing roller, at least part of the pressing receiving portion is located in a space surrounded by the first bottom portion, the second bottom portion, and a tangent line tangent to both an outer wall of the first bottom portion and an outer wall of the second bottom portion.

Abstract: An image forming apparatus includes a housing having an opening, a drum cartridge, and a development cartridge. The drum cartridge is movable in a first direction through the opening between a first position at which the drum cartridge is located inside the housing and a second position at which the drum cartridge is located outside the housing. The drum cartridge includes a photosensitive drum rotatable about an axis extending in the first direction and a first handle located at a downstream end of the drum cartridge in a movement direction in which the drum cartridge moves from the first position to the second position. The development cartridge is attachable to and detachable from the drum cartridge. The development cartridge includes a development roller and a second handle located upstream of the first handle in the movement direction in a state where the development cartridge is attached to the drum cartridge.

Abstract: An assembly for an image forming device includes an electrical connector that is movable between a retracted position and an extended position. In the retracted position an electrical contact of the electrical connector is disengaged from a corresponding electrical contact of a replaceable unit when the replaceable unit is installed in the image forming device. In the extended position the electrical contact of the electrical connector is engaged with the corresponding electrical contact of the replaceable unit. A camming member is operative to move the electrical connector between the extended position and the retracted position.