Patent Number: 7,787,004

Title: Line head and image forming apparatus using the same

Abstract: A line head includes: a first substrate that includes light-emitting elements formed thereon; and a second substrate that includes focusing lenses, which are inverted optical systems, focusing light emitted from the light-emitting elements, and has a linear expansion coefficient that is smaller than that of the first substrate.

Inventors: Nomura; Yujiro (Shiojiri, JP), Ikuma; Ken (Suwa, JP)

Assignee: Seiko Epson Corporation

International Classification: B41J 2/45 (20060101)

Expiration Date: 8/31/12018