ROTARY POLYGON MIRROR AND LIGHT DEFLECTING AND SCANNING DEVICE

摘要

PROBLEM TO BE SOLVED: To record a high-quality image by removing stray light being the main cause of the deterioration of the image. SOLUTION: In the rotary polygon mirror where a prism part having mirror surface parts on its side surface and a circular cylinder part having the columnar shape of an attaching part to a driving means are integrally constituted in an axially aligned state, the outer peripheral surface of the circular cylinder part is inclined to the perpendicular direction of an attaching reference surface.