Optical beam scanning device and diaphragm device capable of...

Details Optical beam scanning device and diaphragm device capable of... Optical beam scanning device and diaphragm device capable of...

2007-12-04

2007-12-04

Pham, Hai (Department: 2853)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

10886060

ABSTRACT:
An optical beam scanning device of the present invention has a light source, a deflection reflecting surface for deflecting to scan light from the light source on a recording medium, and a diaphragm device which is provided between the light source and the deflection reflecting surface, and the diaphragm has an opening section formed by a nonplanar light shielding section. The light shielding section makes light shielding quantity of the light from the light source in a vertical scanning direction different in positions in a horizontal scanning direction and in a light advancing direction.

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patent: 2002/0057327 (2002-05-01), Yoshida
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patent: 2002-023092 (2002-01-01), None

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