Laser light radiation device providing reduced laser light spot

Details Laser light radiation device providing reduced laser light spot Laser light radiation device providing reduced laser light spot

1994-04-20

1997-05-20

Reinhart, Mark J.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347256, B41J 2415

Patent

active

056316879

ABSTRACT:
A laser light radiation device has a light source for emitting laser light which is modulated according to an image signal, a collimator lens for collimating the laser light emitted from the light source, and a polygonal mirror for deflecting the laser beam emerging from the collimator lens. The device further has a diffraction grating in a laser optical path between the collimator lens and the polygonal mirror.

REFERENCES:
patent: 4268871 (1981-05-01), Kawamura

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