Patent ID: 8526856

Claim:
An image forming unit comprising: a first rotating body having a first gear; a first unit that rotatably supports the first rotating body; a second rotating body having a second gear; a second unit that rotatably supports the second rotating body; and a biasing part that generates a bias force and that biases the second unit toward the first unit at a point of contact at which the first gear and the second gear contact each other, wherein a drive force is generated by transmitting rotation from the first gear to the second gear in order to transmit the rotation from the first rotating body to the second rotating body, the biasing part biases the second unit in a biasing direction substantially perpendicular to a driving direction of the drive force, the biasing part is positioned at a downstream side of the point of contact in the driving direction of the drive force, a mesh pressure angle is an angle of pressure based on meshing of the first and second gears, and the biasing direction and the mesh pressure angle are substantially parallel with each other.