MIRROR MOUNTING STRUCTURE

摘要

PURPOSE:To eliminate the adjusting work for a mirror mounting part, by fixing a mirror which reflects light in the direction of a photoreceptor to a light shielding box which is formed in one body with the housing of an exposure optical system. CONSTITUTION:A seat 23 for mounting of a projection lens is formed at the center of the bottom wall 16 of the housing of an exposure optical system in one body therewith, and a projection lens 24 is mounted thereto. A light shielding box 26 is formed in one body with the part near one end of the wall 16, and three projections located on both sides in the transverse direction of a square hole 29 are formed on the outside surface of the rear wall 26b of the box 26 in one body with the wall 26b. A mirror 28 is seated and fixed to these projections. The lens 24 and the mirror 28 are mounted and fixed with virtually no adjustment if the seat 23 and the wall 26b of the mirror mounting surface are molded exactly.