Exposure device and image forming apparatus having a light source positioning member and an elastically deformable board

摘要

An exposure device includes a board on which a light source for emitting a light beam is mounted and on which a circuit is disposed, a housing that contains an optical system for guiding the light beam, a positioning member that positions the light source relative to the housing in an optical axis direction by contacting a reference portion disposed around the light source, and a deformable portion disposed in a region of the board that is different from a region on which the circuit is disposed. The deformable portion urges the reference portion toward the positioning member by being elastically deformed when the board is attached to the housing.

主权项

1. An exposure device comprising:
a board on which a light source for emitting a light beam is mounted and on which a circuit is disposed; a housing that contains an optical system for guiding the light beam; a positioning member that positions the light source relative to the housing in an optical axis direction by contacting a reference portion disposed around the light source; and a deformable portion disposed in a region of the board that is different from a region on which the circuit is disposed, the deformable portion urging the reference portion toward the positioning member by being elastically deformed when the board is attached to the housing, wherein the board has a U-shaped cutout portion, and wherein the deformable portion is surrounded by the cutout portion.