Optical printhead and image forming apparatus

Details Optical printhead and image forming apparatus Optical printhead and image forming apparatus

2007-02-06

2007-02-06

Shah, Manish S. (Department: 2853)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S242000

Reexamination Certificate

active

10786575

ABSTRACT:
An optical printhead includes a light source, a light guide, and a light collecting sheet. The light guide includes a light incident surface facing the light source and a flat light emitting surface extending in a primary scanning direction. The light collecting sheet faces the light emitting surface of the light guide and allows the passage of light emitted from the light emitting surface. The collecting sheet includes a prism layer formed with a plurality of ridges extending parallel to each other, and a base layer laminated on the prism layer. Diffused light rays emitted from the light emitting surface of the light guide pass through the light collecting sheet to become parallel rays.

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patent: 6-202242 (1994-07-01), None
patent: 2000-280527 (2000-10-01), None

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