Patent ID: 7212773

Claim:
A drive force transmission device comprising: a driven side rotational coupling section configured to receive a rotational drive force; a drive side rotational coupling section coupled with the driven side rotational coupling section such that the rotational drive force is transmitted from the drive side rotational coupling section to the driven side rotational coupling section; and a transmission gear meshing with said driven side rotational coupling section; wherein a position of said driven side rotational coupling section is corrected in a plane orthogonal to an axis of rotation of the driven side rotational coupling section by disposing a shaft in an opening defined in the driven side rotational coupling section such that the driven side rotational coupling section moves in at least the plane orthogonal to the axis of rotation of the driven side rotational coupling section, a clearance being defined between the shaft and a surface that defines the opening, such that an axis of rotation of the drive side rotational coupling section and the axis of rotation of the driven side rotational coupling section are configured to substantially align with one another when rotating.