Abstract: A monochrome laser printer including, a main body including a front wall and a rear wall, a feeding tray, a pickup roller being closer to the rear wall than to the front wall, a drum cartridge comprising a photosensitive drum that is closer to the rear wall than to the front wall and is configured to feed recording sheet upward, a developing cartridge comprising a developing roller that is disposed below the photosensitive drum and faces the photosensitive drum, an exposing unit being closer to the front wall than to the rear wall and is disposed above the feeding tray, a pressing member that is disposed below the developing roller, and a compression spring that is disposed below the pressing member and is configured to press the pressing member upward to press the developing roller upward via the pressing member.

Abstract: An image forming apparatus has a main casing including an opening provided at an upper portion of the main casing, a process cartridge attachable to the main casing through the opening, and a top cover movable between an open position where the top cover opens the opening and a close position where the top cover closes the opening. The process cartridge includes a photosensitive drum and a memory provided with a first electrical contact. The top cover supports an LED head configured to emit light to expose the photosensitive drum, and a second electrical contact electrically connected to the first electrical contact in a state where the process cartridge is attached to the main casing and in a state where the top cover is positioned at the close position.

Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.

Abstract: An image forming apparatus is provided with: an apparatus body; a photosensitive member; a developing cartridge configured to have a developer supporting body; a cleaner configured to collect developer remaining on the photosensitive member; and a waste developer container configured to contain developer collected by the cleaner. The apparatus body is configured to have an installment passage, through which the developing cartridge passes when the developing cartridge is installed into and removed from the apparatus body. The waste developer container is configured to be movable between a first position at which at least a part of the waste developer container is located within the installment passage and a second position at which the waste developer container is located away from the installment passage.

Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.

Abstract: In an image forming apparatus, a plurality of light emitting portions arrayed in an array direction. A lens array has a length in the array direction longer than a length in a direction orthogonal to the array direction. A controller is configured to perform: converting a reference printing pattern including a plurality of first linear patterns to a detection pattern including a plurality of second linear patterns, each of the plurality of first linear patterns forming a first angle with respect to a reference line parallel to the array direction, each of the plurality of second linear patterns forming a second angle smaller than the first angle with respect to the reference line; forming a detection pattern image on a transfer medium; detecting a print density of the detection pattern image with a sensor; and setting an image formation condition according to the print density detected by the sensor.

Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.

Abstract: A developing cartridge includes: a casing, a developing roller, a storage medium having an electrical contact surface, a holder, and a holder cover configured to cover the holder. The holder has: a first outer surface holding the electrical contact surface, a second outer surface spaced away from the first outer surface in a third direction, and a resilient member connected to the first outer surface and to the second outer surface. The resilient member is configured to expand and contract to change a distance between the first outer surface and the second outer surface. The resilient member has a first length in the third direction in a state where the holder cover is detached from the holder. The resilient member has a second length in the third direction smaller than the first length in a state where the holder cover is attached to the holder.

Abstract: A monochrome laser printer including, a main body including a front wall and a rear wall, a feeding tray, a pickup roller being closer to the rear wall than to the front wall, a drum cartridge comprising a photosensitive drum that is closer to the rear wall than to the front wall and is configured to feed recording sheet upward, a developing cartridge comprising a developing roller that is disposed below the photosensitive drum and faces the photosensitive drum, an exposing unit being closer to the front wall than to the rear wall and is disposed above the feeding tray, a pressing member that is disposed below the developing roller, and a compression spring that is disposed below the pressing member and is configured to press the pressing member upward to press the developing roller upward via the pressing member.

Abstract: A process cartridge includes: a developing unit; a drum unit; an urging member; and an electrically-conductive member. The developing unit includes a developing roller. The drum unit includes a photosensitive drum. The developing unit is pivotally movable relative to the drum unit about a pivot axis extending along the developing roller. The urging member is configured to urge the developing roller toward the photosensitive drum. The electrically-conductive member is provided at the developing unit and configured to apply voltage to the developing roller. The electrically-conductive member is made of an electrically-conductive resin. The electrically-conductive member includes a contact portion configured to contact an electric contact provided at an image forming apparatus. The pivot axis and the contact portion define a first distance therebetween. The pivot axis and the urging member define a second distance therebetween. The first distance is smaller than the second distance.

Abstract: An image forming apparatus includes a developing cartridge, a drum cartridge, and an electric contact. The developing cartridge includes a holder having a resilient member. In a state where the holder is positioned at a first position, the resilient member has a first length and the electric contact surface is in contact with the electric contact. In a state where the holder is positioned at a second position, the resilient member has a second length in the third direction longer than the first length and the electric contact surface is in contact with the electric contact. In a state where the holder moves from the first position to the second position, the holder pivots in a state where the holder is in contact with the first contact surface.

Abstract: An image-forming apparatus includes a developing cartridge, a drum cartridge, an electrical contact, a frame to which the developing cartridge attached to the drum cartridge is attachable, and first and second guide portions. The developing cartridge includes a storage medium having an electrical contact surface, and a holder including: a first outer surface holding the electrical contact surface, a second outer surface, and a resilient member connected to the both outer surfaces. The drum cartridge includes a holder support portion. The frame allows the developing cartridge to move from a first position to a second position, and then to a third position during insertion of the developing cartridge into the frame. The first guide portion guides the first outer surface, and the second guide portion guides the holder support portion to allow the electrical contact surface to contact the electrical contact during insertion of the developing cartridge into the frame.

Abstract: A developing cartridge includes: a casing, a developing roller, a storage medium having an electrical contact surface, a holder, and a holder cover configured to cover the holder. The holder has: a first outer surface holding the electrical contact surface, a second outer surface spaced away from the first outer surface in a third direction, and a resilient member connected to the first outer surface and to the second outer surface. The resilient member is configured to expand and contract to change a distance between the first outer surface and the second outer surface. The resilient member has a first length in the third direction in a state where the holder cover is detached from the holder. The resilient member has a second length in the third direction smaller than the first length in a state where the holder cover is attached to the holder.

Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.

Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.

Abstract: An image-forming apparatus includes a developing cartridge, a drum cartridge, an electrical contact, a frame to which the developing cartridge attached to the drum cartridge is attachable, and first and second guide portions. The developing cartridge includes a storage medium having an electrical contact surface, and a holder including: a first outer surface holding the electrical contact surface, a second outer surface, and a resilient member connected to the both outer surfaces. The drum cartridge includes a holder support portion. The frame allows the developing cartridge to move from a first position to a second position, and then to a third position during insertion of the developing cartridge into the frame. The first guide portion guides the first outer surface, and the second guide portion guides the holder support portion to allow the electrical contact surface to contact the electrical contact during insertion of the developing cartridge into the frame.

Abstract: An image forming apparatus is provided with: an apparatus body; a photosensitive member; a developing cartridge configured to have a developer supporting body; a cleaner configured to collect developer remaining on the photosensitive member; and a waste developer container configured to contain developer collected by the cleaner. The apparatus body is configured to have an installment passage, through which the developing cartridge passes when the developing cartridge is installed into and removed from the apparatus body. The waste developer container is configured to be movable between a first position at which at least a part of the waste developer container is located within the installment passage and a second position at which the waste developer container is located away from the installment passage.

Abstract: An image forming apparatus, having a photosensitive drum assembly, an exposure head, and a bearing, is provided. The photosensitive drum assembly includes a photosensitive drum and a flange disposed at an end of the photosensitive drum in an axial direction of an axis of the photosensitive drum. The flange contacts an inner surface of the photosensitive drum. The exposure head includes a plurality of light emitters aligned along the axial direction of the photosensitive drum, a lens array focusing light from the light emitters on the photosensitive drum, and a head frame to support the light emitters and the lens array. The bearing has a first contact face to contact the exposure head to define a distance between the lens array and the photosensitive drum along a direction of an optical axis of the light.

Abstract: A process cartridge includes: a developing unit; a drum unit; an urging member; and an electrically-conductive member. The developing unit includes a developing roller. The drum unit includes a photosensitive drum. The developing unit is pivotally movable relative to the drum unit about a pivot axis extending along the developing roller. The urging member is configured to urge the developing roller toward the photosensitive drum. The electrically-conductive member is provided at the developing unit and configured to apply voltage to the developing roller. The electrically-conductive member is made of an electrically-conductive resin. The electrically-conductive member includes a contact portion configured to contact an electric contact provided at an image forming apparatus. The pivot axis and the contact portion define a first distance therebetween. The pivot axis and the urging member define a second distance therebetween. The first distance is smaller than the second distance.

Abstract: A developing frame has: side walls that support ends of a developing roller shaft; a connecting wall that connects the side walls, the connecting wall being pressed by first and second pressing members; and a handle extending from the connecting wall in a second direction perpendicular to a first direction. The handle is located farther away from the developing roller than the connecting wall is in the second direction. A drum frame has a supporting wall that supports the first and second pressing members. The supporting wall has an opening that is located between the first pressing member and the second pressing member. The opening allows the handle to be exposed when the developing cartridge is mounted on the drum cartridge. The supporting wall overlaps the handle as viewed from the first direction in a state where the handle is exposed through the opening.