Patent ID: 8593497
Filing Date: 2013-11-26
Classification: B41J,G02B

Abstract:
1. An optical scanning device that optically scans a surface to be scanned in a main-scanning direction, the optical scanning device comprising: a light source; an optical deflector that has a reflective surface including an upstream side and a downstream side, the optical deflector rotates about an axis of rotation and deflects a light beam emitted from the light source; a scanning optical system that guides the light beam deflected by the optical deflector to the surface to be scanned; and a flow guide member that is provided near the optical deflector, wherein the flow guide member includes at least one guide surface that is one of angled and curved such that the at least one guide surface deflects a flow of air generated by the upstream side of the reflective surface during rotation of the optical deflector so as to flow in a direction towards the downstream side of the reflective surface, and wherein the flow guide member includes a first guide surface and the at least one guide surface includes a second guide surface that extends from the first guide surface at a substantially right angle.