Exposure device and method for producing the same

摘要

There is provided an exposure device (100) including an exposure head having a light-emitting member (132) which has a plurality of light-emitting sections arranged in a row and a casing (110) which holds the light-emitting member and which is elongated in a longitudinal direction orthogonal to an optical axis direction of a light emitted from the light-emitting sections; and an elongated frame (120) member fixed to the casing and having a reference portion (122,123) at which the frame member is positioned with respect to the light-emitting sections; wherein the frame member is fixed to the casing such that the frame member is positioned with respect to the light-emitting sections in both of the longitudinal direction and a width direction of the casing, the width direction being orthogonal to the longitudinal direction and the optical axis direction. The exposure device is capable of performing exposure precisely at a desired exposure position.