Patent ID: 8451309
Filing Date: 2013-05-28
Classification: G03G

Abstract:
1. An optical scanning apparatus comprising: an optical deflector having deflective reflection surfaces that deflect a light beam at a substantially constant angular velocity; an optical system that condenses a light beam deflected from the reflection surface of the optical deflector into a light spot on a to-be-scanned surface thereby performing optical scanning of the to-be-scanned surface at the substantially constant velocity, wherein the to-be-scanned surface is a surface of a latent image carrier having a charge generation layer that generates carriers and a charge transport layer; and a driving unit that drives the optical deflector at a scanning frequency at which exposure is attained in a state where some of the carriers generated at the charge generation layer of the latent image carrier exist inside the charge generation layer or on an outermost surface and the carriers substantially stay still.