Patent ID: 6023286
Filing Date: 2000-02-08
Classification: G02B

Abstract:
An image forming apparatus, comprising:a charged photoreceptor moving in a process direction;a motion sensor sensing the motion of the photoreceptor and producing a motion signal;a light source emitting a light beam that is modulated in accordance with modulation signals;a rotating polygon having a plurality of facets for reflecting the emitted light beam;a mounting assembly holding a cylindrical mirror such that said cylindrical mirror is rotatable about an axis, said cylindrical mirror for directing the reflected light beam onto said moving photoreceptor and producing a sweeping spot;a rotation inducing element responsive to a position signal, said rotation inducing element causing said mounting assembly to rotate said cylindrical mirror about said axis in response to said position signal such that the sweeping spot moves in the process direction; anda controller receiving said motion signal and producing said modulation signals and said position signal;wherein said mounting assembly includes a lever arm and a spring, wherein an end of said lever arm contacts said rotation inducing element, and wherein said spring biases said lever arm toward said rotation inducing element; andwherein said controller produces said modulation signals and said position signal such that a latent image is produced at a predetermined position.