Patent ID: 9041760
Filing Date: 2015-05-26
Classification: G03G

Abstract:
1. An optical print head, comprising: a light emitting substrate which includes a light emitting element on a base; a rod lens array which focuses light emitted from the light emitting element onto an image carrier, the rod lens array having a larger linear expansion coefficient than the base of the light emitting substrate; a holder which holds the light emitting substrate and the rod lens assembly; and expansion suppressing members which are attached to both lateral surfaces of the rod lens array in a direction that is perpendicular to an optical axis direction and is a shorter direction and attached to the holder, each of the expansion suppressing members being disposed between the rod lens array and the holder, each of the expansion suppressing members being an element that is separate from the holder and the rod lens assembly, and each of the expansion suppressing members having a smaller linear expansion coefficient than the rod lens array.