Light beam scanning recording apparatus width modulation of both

Details Light beam scanning recording apparatus width modulation of both Light beam scanning recording apparatus width modulation of both

1987-02-24

1988-06-28

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346160, 358296, G01D 942, G01D 1514, H04H 121

Patent

active

047542918

ABSTRACT:
A light beam scanning recording apparatus for recording information on a recording material by modulating a laser beam emitted by a semiconductor laser and scanning the recording material with the modulated laser beam is constituted to modulate the laser beam by combining pulse number modulation or pulse width modulation with intensity modulation. Intensity modulation of the laser beam is conducted by controlling the drive current of the semiconductor laser. A plurality of semiconductor lasers may be provided for scanning with a coalesced laser beam obtained by coalescing laser beams emitted by the semiconductor lasers, and intensity modulation may be conducted by changing the number of the laser beams which are coalesced.

REFERENCES:
patent: 3708797 (1973-01-01), Solomon
patent: 4370667 (1983-01-01), Ohara
patent: 4404570 (1983-09-01), Ohnishi
patent: 4679057 (1987-07-01), Hamada

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