Abstract: A cartridge unit includes: a first unit which includes a first supporting portion and a second supporting portion; and a second unit which includes a first supported portion, a second supported portion, and a storage member, the storage member including a memory contact, and a contact arrangement surface on which the memory contact is disposed. The second unit rotates from a first position to a second position in a state in which the first supported portion is supported by the first supporting portion and the second supported portion is supported by the second supporting portion to be positioned with respect to the first unit. A normal direction of the contact arrangement surface faces toward a direction in which the memory contact is exposed. The normal direction faces toward a direction opposite to a direction in which the second unit is directed from the first position to the second position.

Abstract: A cartridge configured to be attachable to an apparatus main body of an image forming apparatus includes a first unit including a photosensitive drum, a second unit attached to the first unit and including a developing roller, and a second frame member including a toner storage portion and including a toner reception port, the toner storage portion including a first end portion and a second end portion in a rotational axis direction of the photosensitive drum, the toner reception port provided in the first end portion, a toner container configured to be attachable to the second unit, the toner container including a toner discharge port configured to discharge the toner to the toner storage portion through the toner reception port, and a memory, the memory provided in an end portion of the cartridge on the same side as the second end portion of the toner storage portion.

Abstract: A process cartridge includes a photosensitive member and a developing unit. The developing unit includes a frame to store toner, a developing roller to carry the toner, a side seal to contact an end portion of the developing roller and prevent the toner from leaking out, and a sealing sheet to contact a center portion of the developing roller and prevent the toner from leaking out. A toner receiving portion of the frame includes an opening facing the developing roller and is disposed on an upstream side of the side seal and a downstream side of a contact portion where the developing roller contacts the photosensitive member, and moreover is disposed at a position overlapping with the side seal. The developing unit includes a blocking member to block at least a part of the opening, and the blocking member is disposed between the opening and the developing roller.

Abstract: To further develop a drive transmission method from a main assembly of an apparatus toward a cartridge. The cartridge is detachably mountable to a main assembly of an image forming apparatus including a drive output member configured to output a driving force, and a main assembly side pushing member configured to incline the drive output member by pushing the drive output member. The cartridge includes a photosensitive drum and a cartridge side pushing member. The cartridge side pushing member is configured such that an inclination angle of the drive output member is changed by pushing the main assembly side pushing member.

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: A cartridge unit includes: a first unit which includes a first supporting portion and a second supporting portion; and a second unit which includes a first supported portion, a second supported portion, and a storage member, the storage member including a memory contact, and a contact arrangement surface on which the memory contact is disposed. The second unit rotates from a first position to a second position in a state in which the first supported portion is supported by the first supporting portion and the second supported portion is supported by the second supporting portion to be positioned with respect to the first unit. A normal direction of the contact arrangement surface faces toward a direction in which the memory contact is exposed. The normal direction faces toward a direction opposite to a direction in which the second unit is directed from the first position to the second position.

Abstract: A process cartridge includes a photosensitive member and a developing unit. The developing unit includes a frame to store toner, a developing roller to carry the toner, a side seal to contact an end portion of the developing roller and prevent the toner from leaking out, and a sealing sheet to contact a center portion of the developing roller and prevent the toner from leaking out. A toner receiving portion of the frame includes an opening facing the developing roller and is disposed on an upstream side of the side seal and a downstream side of a contact portion where the developing roller contacts the photosensitive member, and moreover is disposed at a position overlapping with the side seal. The developing unit includes a blocking member to block at least a part of the opening, and the blocking member is disposed between the opening and the developing roller.

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: A coupling member for an image forming apparatus cartridge is configured to rotate about a rotational axis thereof. The coupling member includes an end portion having an outer surface and a plurality of surfaces forming a recess extending in a direction from the outer surface toward the rotational axis. The plurality of surfaces includes a first surface, a second surface opposite to the first surface, and a third surface extending between the first surface and the second surface. As viewed in a direction toward the recess and perpendicular to the rotational axis, the third surface faces toward outside of the recess. Both of the first and second surfaces are sloped with respect to a plane that is perpendicular to the rotational axis such that a distance measured along a direction of the rotational axis between the first and second surfaces decreases as a distance along the first and second surfaces from the outer surface increases.

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive member unit including a photosensitive drum; a sheet configured to remove a deposited matter from a surface of the drum, the sheet being in contact with the surface of the drum at an end portion of the drum with respect to a rotational axis direction of the member; and a developing unit detachably mounted to the member unit, the developing unit including a developing roller configured to supply toner to the drum, and a storage portion configured to store the deposited matter removed from the surface of the drum by the sheet.

Abstract: A cartridge for a main assembly of an electrophotographic image forming apparatus, wherein the main assembly includes a rotatable driving coupling member including a driving force transmitting portion for transmitting a driving force and a driving side abutment, wherein the cartridge is demountable in a direction substantially perpendicular to a rotational axis of the driving coupling member, includes a rotatable driven coupling member including a driving force receiving portion for receiving the driving force, and a driven side abutment to be abutted by the driving side abutment, the driven coupling member being slidable in a predetermined direction which is substantially parallel with a rotational axis of the receiving coupling member; wherein at least one of the driving side abutment and the driven side abutment is inclined so that the driven coupling member is retractable away from the driving coupling member in the predetermined direction by a force received by driven side abutment from the driving side

Abstract: With a structure in which a coupling member includes a sphere providing a center of inclination (pivoting), a rotational force transmitted member has an opening have a diameter smaller than that of the sphere, and the coupling member is prevented from disengaging from rotational force transmitted member by contact of inner edge of the opening to the sphere, the inner edge of the opening may limit an inclinable (pivotable) angle range of the coupling member. In a state that a pin that is a shaft portion is inserted in a hole that is a through-hole provided in a coupling member, opposite end portions of the pin are supported by a driving side flange, which is a rotational force transmitted member. The coupling member, the driving side flange, and the pin are connected in this manner, and the pin contacts the inside of the hole without limiting the inclinable angle range.

Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive member unit including a photosensitive drum; a sheet configured to remove a deposited matter from a surface of the drum, the sheet being in contact with the surface of the drum at an end portion of the drum with respect to a rotational axis direction of the member; and a developing unit detachably mounted to the member unit, the developing unit including a developing roller configured to supply toner to the drum, and a storage portion configured to store the deposited matter removed from the surface of the drum by the sheet.

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: A cartridge includes a rotatable member and a cylindrical member operatively connected to the rotatable member. The cartridge also includes a coupling member operatively connected to the cylindrical member and coaxially rotatable with the cylindrical member. The coupling member includes at least one projection for receiving a rotational force provided at one end portion of the coupling member, and a shaft portion elongated along an axis of the coupling member. The coupling member is movable with respect to the cylindrical member in a direction of the axis of the cylindrical member. The cartridge further includes a coil spring pressing the coupling member in the direction of the axis of the cylindrical member. One end portion of the coil spring encompasses a part of the shaft portion of the coupling member, with the one end portion of the coil spring and the part of the shaft portion being accommodated in a hole in the cylindrical member.

Abstract: 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.

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: A cartridge unit includes: a first unit which includes a first supporting portion and a second supporting portion; and a second unit which includes a first supported portion, a second supported portion, and a storage member, the storage member including a memory contact, and a contact arrangement surface on which the memory contact is disposed. The second unit rotates from a first position to a second position in a state in which the first supported portion is supported by the first supporting portion and the second supported portion is supported by the second supporting portion to be positioned with respect to the first unit. A normal direction of the contact arrangement surface faces toward a direction in which the memory contact is exposed. The normal direction faces toward a direction opposite to a direction in which the second unit is directed from the first position to the second position.

Abstract: A process cartridge includes a photosensitive member and a developing unit. The developing unit includes a frame to store toner, a developing roller to carry the toner, a side seal to contact an end portion of the developing roller and prevent the toner from leaking out, and a sealing sheet to contact a center portion of the developing roller and prevent the toner from leaking out. A toner receiving portion of the frame includes an opening facing the developing roller and is disposed on an upstream side of the side seal and a downstream side of a contact portion where the developing roller contacts the photosensitive member, and moreover is disposed at a position overlapping with the side seal. The developing unit includes a blocking member to block at least a part of the opening, and the blocking member is disposed between the opening and the developing roller.

Abstract: A foreign substance collection apparatus includes: a frame body; a photosensitive drum; a cleaning roller which collects foreign substances from a surface of the photosensitive drum; a collecting roller which further collects the foreign substances having been collected by the cleaning roller from the cleaning roller; and a scraping member which scrapes off the foreign substances from the collecting roller. A foreign substance collecting portion included in the frame body has, in a posture during use: a first inner bottom surface which is positioned below the scraping member in a gravity direction; an outer bottom surface which is positioned further below the first inner bottom surface; and a connecting surface which intersects the first inner bottom surface and the outer bottom surface and which connects the first inner bottom surface and the outer bottom surface with each other.