Patent ID: 7315710

Claim:
An electrophotographic photosensitive drum supporting apparatus for rotatably supporting an electrophotographic photosensitive drum used in an electrophotographic image forming apparatus, said electrophotographic photosensitive drum supporting apparatus comprising: a first supporting member having a first hole portion, a first inclined surface, and a second inclined surface, said first and second inclined surfaces being inclined with respect to an imaginary plane passing through an axis of the electrophotographic photosensitive drum, and said first and second inclined surfaces being disposed on an inner surface of said first hole portion and being symmetrical with respect to said imaginary plane, wherein said first and second inclined surfaces rotatably support a first shaft portion provided on one lengthwise end of the electrophotographic photosensitive drum, and an outside of said first hole portion abuts against a first main body positioning portion provided in a main body of the electrophotographic image forming apparatus; and a second supporting member having a second hole portion, a third inclined surface, and a fourth inclined surface, said third and fourth inclined surfaces being inclined with respect to said imaginary plane, and said third and fourth inclined surfaces being disposed on an inner surface of said second hole portion and being symmetrical with respect to said imaginary plane, wherein said third and fourth inclined surfaces rotatably support a second shaft portion provided on the other lengthwise end of the electrophotographic photosensitive drum, and an outside of said second hole portion abuts against a second main body positioning portion provided in the main body.