Patent ID: 8401442

Claim:
A developing cartridge comprising: a casing; a developer roller having a longitudinal axis L 1 , the developer roller being rotatably supported in the casing to permit rotation about the axis L 1 ; and a coupling member having a longitudinal axis L 2 and having (i) a rotational force transmitting portion for transmitting a rotational force to the developer roller, (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 (i) a first position in which the axis L 2 of the coupling member is substantially parallel to and offset from the axis L 1 of the developer roller so that the axis L 2 does not pass through the developer roller, (ii) a second position in which the axis L 2 is inclined with respect to the position of the axis L 2 when the coupling member is in the first position, (iii) and a third position in which the axis L 2 is inclined with respect to the position of the axis L 2 when the coupling member is in the first position and in a direction opposite to the direction the coupling member is inclined when in the second position.