Movement and/or urging of a developer carrying member is carried out with high precision. A cartridge that is mountable to an apparatus main assembly of an image forming apparatus, the cartridge includes a developing roller; a frame supporting the developing roller; a movable part movably supported by the frame and movable to a first position and to a second position relative to the frame; and an elastic part provided between the frame and the movable part to urge the movable part. The movable part includes a first force receiving part that receives force from the apparatus main assembly, in a direction of moving from the first position to the second position, and a second force receiving part that receives force from the apparatus main assembly, in a direction of moving from the second position to the first position. When the movable part receives force from the apparatus main assembly at the first force receiving part and is at the second position, the movable part receives urging force from the elastic part in a direction of moving the movable part from the second position to the first position.

The present invention provides an image forming apparatus including: a first moving member pressed and moved by an openable/closable member when the openable/closable member is opened, and switching a cartridge from a state where the cartridge is positioned in an image forming position to a state where the positioning is released; and a second moving member pressed and moved by the openable/closable member when the openable/closable member is opened, and moving the exposure member from an exposure position to a retracted position, wherein when the positioning of the cartridge is released, a reaction force applied from the first moving member to the openable/closable member reaches a first peak, when the exposure member is moved to the retracted position, a reaction force applied from the second moving member to the openable/closable member reaches a second peak, and timing of the first peak is different from timing of the second peak.

An image forming apparatus includes an apparatus main body, a process cartridge, a scanner unit, and a toner cartridge. The process cartridge is detachably mounted on the apparatus main body. The process cartridge includes: a photosensitive drum configured to rotate about a rotational axis extending in a first direction; and a development unit configured to supply toner to the photosensitive drum. The toner cartridge is configured to store toner. At least part of the photosensitive drum, at least part of the scanner unit, and at least part of the toner cartridge are aligned in a second direction in this order. The second direction is perpendicular to both the first direction and to a vertical direction. The at least part of the photosensitive drum, the at least part of the scanner unit, and the at least part of the toner cartridge overlap one another as viewed from the second direction.

An image forming apparatus includes an apparatus body including an opening portion, and an opening-and-closing member, a process unit detachably attached to and supported by the apparatus body, the process unit including an image bearing member, a toner storage portion, and a supply portion, a sheet supporting portion, and a rotary feeding member. When viewed in a gravity direction, the supply portion is disposed on a same side as a side on which the sheet supporting portion is disposed with respect to the image bearing member, and the opening portion is disposed on a side opposite to the side on which the sheet supporting portion is disposed with respect to the image bearing member. In a case where the opening-and-closing member is positioned at an opening position, the process unit is configured to be attached to and detached from the apparatus body through the opening portion.

A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first latch-receiving shelf is positioned on a first longitudinal end of the housing and a second latch-receiving shelf is positioned on a second longitudinal end of the housing. Contact surfaces on top portions of the first and second latch-receiving shelves are positioned to contact corresponding first and second latches in an image forming device. The contact surface of the first latch-receiving shelf is positioned lower than a first rotational axis of a first drive coupler of the toner cartridge and higher than a second drive coupler of the toner cartridge. The contact surface of the second latch-receiving shelf is positioned lower than at least a portion of a first electrical contact of the toner cartridge and higher than at least a portion of a second electrical contact of the toner cartridge.

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.

A mountable unit set usable with an electrophotographic-image-forming apparatus includes a cartridge and an attachment. A cartridge includes a photosensitive drum and a coupling member for receiving a driving force for rotating the photosensitive drum, from a driving shaft. An attachment includes a cylindrical portion for being mounted to a periphery of the driving shaft to suppress tilting of the driving shaft. Tilting of a driving-force transmitting member is suppressed.

A cartridge includes a frame and a developing roller for developing a latent image on the electrophotographic photosensitive drum. The cartridge also includes a coupling member having a rotational force receiving portion to receive a rotational force to be transmitted to the developing roller. First and second force receiving portions are provided on the frame. The coupling member is movable relative to the roller axis between a first position in which the coupling axis is substantially parallel to the roller axis and a second position different from the first position.

A cartridge frame includes a protruding rib protruding toward a first frame, a first bearing supporting one end of a photosensitive drum in an axial direction, and a second bearing supporting an other end of the photosensitive drum in the axial direction. The first frame includes a first guide rail configured to, when a process cartridge is attached to an apparatus main body, guide the protruding rib to slide along the first guide rail. A second frame includes a second guide rail configured to, when the process cartridge is attached to the apparatus main body, guide the second bearing to slide along the second guide rail. A size of the first guide rail in a width direction perpendicular to both the axial direction and an attachment direction of the process cartridge is smaller than a size of the second guide rail in the width direction.

An information processing method comprising: exposing a correction image displayed on an image display device having a plurality of pixels to a photosensitive recording medium via a limiting member, the limiting member being provided between the image display device and an exposure surface of the photosensitive recording medium and limiting an angle of light emitted from the image display device to the photosensitive recording medium; acquiring recorded image data, which is data of a recorded image recorded on the photosensitive recording medium through the exposure of the correction image; and deriving a correction coefficient K for correcting a pixel value for each pixel of a display image for each pixel of the image display device based on the recorded image data such that the display image including unevenness of which brightness is complementary to unevenness that occur in the recorded image is displayed on the image display device.