Patent ID: 8494409

Claim:
A process cartridge detachably mountable to a main assembly of an image forming apparatus, comprising: an image bearing member capable of bearing a toner image; a rotatable roller rotatable in contact with said image bearing member; a bearing member for rotatably supporting ends of a shaft of said rotatable roller; urging means for urging said rotatable roller via said bearing member in a direction in which said rotatable roller is contacted to said image bearing member; a cartridge frame for rotatably supporting said image bearing member and for movably holding said rotatable roller via said bearing member in a contact and separation direction in which said rotatable roller is contacted to and separated from said image bearing member; a movable guide member which is supported, by said cartridge frame, movably in an axial direction of the shaft of said rotatable roller and which is provided at one end side of said rotatable roller, said movable guide member including a first contact portion at an opposing position in which it opposes a first shaft end portion of said rotatable roller; and a fixed guide member which is fixed to said cartridge frame and which is provided at the other end side of said rotatable roller, said fixed guide member including a second contact portion at an opposing position in which it opposes a second shaft end portion of said rotatable roller, wherein at least one of the first contact portion and the first shaft end portion has an inclined surface inclined with respect to the axial direction of said rotatable roller, and at least one of the second contact portion and the second shaft end portion has an inclined surface inclined with respect to the axial direction of said rotatable roller.