Patent ID: 8787794

Claim:
A cartridge detachably mountable to an image forming apparatus, said cartridge comprising: a photosensitive drum having a shaft provided adjacent to one axial end; a frame that is provided with: (i) a first bearing portion supporting a circumference of said shaft, and (ii) a second bearing portion supporting a circumference of said shaft, said second bearing portion being spaced from said first bearing portion with respect to the axial direction and being disposed at a side opposite from said first bearing portion with respect to a plane including an axis of said shaft at the time when said shaft is supported by said first bearing portion, and said second bearing portion being disposed outside of said first bearing portion with respect to the axial direction; a first clearance space provided at a position opposite to said first bearing portion with respect to the plane, said first clearance space being disposed outside of a contact portion of said second bearing portion relative to said shaft with respect to a radial direction of said photosensitive drum and inside of said second bearing portion with respect to the axial direction; and a second clearance space provided at a position opposite to said second bearing portion with respect to the plane, said second clearance space being disposed outside of a contact portion of said first bearing portion relative to said shaft with respect to the radial direction and outside said first bearing portion with respect to the axial direction, wherein, in a process of causing said shaft to be supported by said first bearing portion, said shaft is capable of entering said first clearance space, and wherein in a process of causing said shaft to be supported by said second bearing portion, said shaft is capable of entering said second clearance space.