Abstract: A drum unit includes a photosensitive drum having an axis L1, a drum flange provided at an end of the photosensitive drum, and a coupling member having an axis L2. The coupling member includes (i) a first end portion connected to the drum flange, (ii) a second end portion including at least one projection, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1.

Abstract: The process cartridge comprises a photosensitive drum having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion connected to a drum flange, (ii) a second end portion, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, wherein the first distance is greater than the second distance.

Abstract: The process cartridge comprises a photosensitive drum having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion connected to a drum flange, (ii) a second end portion, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the photosensitive drum as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the photosensitive drum as measured in the direction of the axis L1, wherein the first distance is greater than the second distance.

Abstract: A drum unit usable in the process cartridge includes a photosensitive drum having an axis L1 and a coupling member having an axis L2. The coupling member includes a first end portion connected with the photosensitive drum, a second end portion having an outermost surface, an axle portion connecting the first end portion and the second end portion to each other, and at least one projection extending from the second end portion. For at least part of the outermost surface of the second end portion, a maximum distance from the axis L2 to the outermost surface along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the axle portion increases.

Abstract: A rotating force transmitting part for an electrophotographic photosensitive drum for a main assembly of the electrophotographic image forming apparatus, wherein the main assembly of the electrophotographic image forming apparatus includes a driving shaft, to be driven by a motor, having the rotating force applying portion, and wherein the electrophotographic photosensitive drum is dismountable from the main assembly of the electrophotographic image forming apparatus in a direction substantial perpendicular with an axial direction of the driving shaft, the rotating force transmitting part includes a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum in the state in which electrophotographic photosensitive drum is mounted to the main assembly of the electrophotographic image forming apparatus, wherein the coupling member being capable of taking a rotational force transmitting angular position for transmitt

Abstract: A drum unit usable in a process cartridge includes a photosensitive drum having an axis L1 and a coupling member having an axis L2. The coupling member includes a first end portion connected to the photosensitive drum and a second end portion, with the second end portion including at least one projection that is open to the axis L2 and an outer surface that faces away from the first end portion. For least part of the outer surface, a maximum distance from the axis L2 to the outer surface along a line perpendicular to the axis L2 decreases as the distance along the axis L2 from the first end portion increases.

Abstract: A process cartridge includes a casing, a photosensitive drum having an axis L1, and a coupling member having an axis L2. The coupling member includes (i) a first end portion connected with the photosensitive drum, (ii) a second end portion having an outermost surface, (iii) an axle portion connecting the first end portion and the second end portion to each other, and (iv) at least one projection extending from the second end portion. For at least part of the outermost surface of the second end portion, a maximum distance from the axis L2 to the outermost surface along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the axle portion increases.

Abstract: An image forming apparatus cartridge includes a casing, a developer roller having an axis L1, and coupling member having an axis L2. The coupling member includes (i) a first end portion operatively connected with the developer roller, (ii) a second end portion having an outermost surface, (iii) an axle portion connecting the first end portion and the second end portion to each other, and (iv) at least one projection extending from the second end portion. For at least part of the outermost surface of the second end portion, a maximum distance from the axis L2 to the outermost surface along a line perpendicular to the axis L2 increases as the distance along the axis L2 from the axle portion increases.

Abstract: An image forming apparatus cartridge comprises a developer roller having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion operatively connected to the developer roller, (ii) a second end portion including at least one projection, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the developer roller as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the developer roller as measured in the direction of the axis L1, wherein the first distance is greater than the second distance.

Abstract: An image forming apparatus cartridge includes a casing, a developer roller having an axis L1, and a coupling member having an axis L2. The coupling member includes a first end portion operatively connected to the developer roller and a second end portion, with the second end portion including at least one projection that is open to the axis L2 and an outer surface that faces away from the first end portion. For at least part of the outer surface, a maximum distance from the axis L2 to the outer surface along a line perpendicular to the axis L2 decreases as the distance along the axis L2 from the first end portion increases.

Abstract: A drum unit usable in the process cartridge includes a photosensitive drum having an axis L1, a drum flange provided at an end of the photosensitive drum, with a part of the drum flange being positioned within the photosensitive drum, and a coupling member having an axis L2. The coupling member includes (i) a first end portion at least a part of which is positioned within the drum flange, and (ii) a second end portion including (ii-i) a surface recessed in the second end portion and facing away from the first end portion and (ii-ii) at least one projection projecting from a surface adjacent to the recessed surface, and (iii) a connecting portion connecting the first end portion and the second end portion.

Abstract: An image forming apparatus cartridge comprises a guide member, a developing roller having an axis L1, and a coupling member having an axis L2 and at least one projection. A relative positioning of the coupling member and the guide member is changeable between (i) a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and (ii) a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, with the first distance being greater than the second distance.

Abstract: A process cartridge comprises a guide member positioned at a side of the process cartridge, a photosensitive drum having an axis L1, and a coupling member having an axis L2, with the coupling member including at least one projection. A relative positioning of the coupling member and the guide member is changeable between (i) a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and (ii) a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, with the first distance being greater than the second distance.

Abstract: A process cartridge includes a casing, a photosensitive drum having an axis L1, and a coupling member having an axis L2. The coupling member includes a first end portion connected to the photosensitive drum and a second end portion, with the second end portion including at least one projection that is open to the axis L2 and an outer surface that faces away from the first end portion. For at least part of the outer surface, a maximum distance from the axis L2 to the outer surface along a line perpendicular to the axis L2 decreases as the distance along the axis L2 from the first end portion increases.

Abstract: A process cartridge comprises a guide member, a photosensitive drum having an axis L1, and a coupling member having an axis L2 and at least one projection. Relative positioning of the coupling member and the guide member is changeable between (i) a first relative position in which a tip of the at least one projection is a first distance away from an end of the guide member as measured in the direction of the axis L1 and (ii) a second relative position in which the tip of the at least one projection is a second distance away from the end of the guide member as measured in the direction of the axis L1, wherein the first distance is greater than the second distance.

Abstract: A process cartridge includes a casing, a photosensitive drum having an axis L1, and a drum flange provided at an end of the photosensitive drum. The process cartridge also includes a coupling member having an axis L2, with the coupling member including (i) a first end portion at least a part of which is positioned within the drum flange, and (ii) a second end portion including (ii-i) a surface recessed in the second end portion and facing away from the first end portion and (ii-ii) at least one projection projecting from a surface adjacent to the recessed surface, and (iii) a connecting portion connecting the first end portion and the second end portion.

Abstract: An image forming apparatus cartridge comprises a developer roller having an axis L1 and a coupling member having an axis L2. The coupling member includes (i) a first end portion operatively connected to the developer roller, (ii) a second end portion including at least one projection, and (iii) a connecting portion connecting the first end portion and the second end portion. The coupling member is movable between (i) a first position in which a tip of the at least one projection is a first distance away from the developer roller as measured in the direction of the axis L1 and (ii) a second position in which the tip of the at least one projection is a second distance away from the developer roller as measured in the direction of the axis L1, wherein the first distance is greater than the second distance.

Abstract: An image forming apparatus cartridge includes a casing, a developer roller having an axis L1, and a coupling member having an axis L2. The coupling member includes a first end portion operatively connected with the developer roller and a second end portion, the second end portion including at least one projection that is open to the axis L2 and an outer surface that faces away from the first end portion. For at least part of the outer surface, a maximum distance from the axis L2 to the outer surface along a line perpendicular to the axis L2 decreases as the distance along the axis L2 from the first end portion increases.