Patent ID: 8452210

Claim:
A device for transmitting a rotational force to an electrophotographic photosensitive drum, comprising: a flange connectable with the drum and having an axis L 1 ; and a coupling member having an axis L 2 , the coupling member having (i) a rotational force transmitting portion engageable with the flange, (ii) a rotational force receiving portion, and (iii) a connecting portion that connects the rotational force receiving portion to the rotational force transmitting portion, wherein the coupling member is movable between a first position in which the axis L 2 of the coupling member is coaxial with the axis L 1 of the flange, and a second position in which the axis L 2 of the coupling member is inclined with respect to the axis L 1 of the flange, wherein the force receiving portion has at least one pair of projections extending substantially in the same direction as axis L 2 away from the connecting portion, each projection having a tip defined by at least one slanted surface and being a part of the projection farthest from the flange when the coupling member is in the first position, and wherein, when the coupling member is in the first position, the tip of each projection is substantially the same distance from the flange.