EXPOSURE DEVICE, LED HEAD AND IMAGE FORMING DEVICE

摘要

An exposure device includes: a substrate on which a plurality of light emitting elements are mounted; an optical system that converges light irradiated from the light emitting elements onto a photosensitive surface; a holding member that holds and fixes the substrate; a support member that supports the optical system and the holding member; a first adhesive member that is tprovided between the substrate and the holding member; and a second adhesive member that is provided between the holding member and the support member, wherein the first adhesive member has higher elongation and lower hardness than the second adhesive member.