Patent ID: 8687030

Claim:
An exposing device which exposes an object with a light, comprising: an optical head which has an elongated shape and in which a plurality of light emitting portions configured to emit light are arranged; and a supporting member configured to support the optical head and to which the optical head is adhered, wherein the optical head and the supporting member are adhered by a first adhesive and a second adhesive, the second adhesive having a modulus of elasticity after curing that is lower than that of the first adhesive, and wherein the second adhesive is applied in a second adhesive area which is located at a boundary between the optical head and the supporting member and which is longer, in a longitudinal direction of the optical head, than a first adhesive area which is located at the boundary and to which the first adhesive is applied, wherein the second adhesive area is arranged at a circumference of the boundary between the optical head and the supporting member, wherein the second adhesive is exposed to an outside of the optical head and the supporting member at the boundary between the optical head and the supporting member, and wherein the first adhesive is in a form of a dot.