Multi-beam scanning system with time sharing beam control

Details Multi-beam scanning system with time sharing beam control Multi-beam scanning system with time sharing beam control

1987-12-23

1988-11-29

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

369116, 358296, G01D 942, G11B 700

Patent

active

047885602

ABSTRACT:
A plurality of light sources generate beams having predetermined light amounts, respectively. An optical scanner receives the beams from the plurality of light sources and directs the beams as a plurality of scanning beams to an object to be scanned. A photodetector has a predetermined number of photosensors smaller than that of the plurality of light sources and substantially detects light amounts of the plurality of scanning beams by the optical scanner in a time sharing manner. A controller outputs a control signal for independently controlling the light amounts of the respective beams from the plurality of light sources in accordance with time-sharing light amount detection signals corresponding to the plurality of scanning beams from the photosensors of the predetermined number.

REFERENCES:
patent: 4423426 (1983-12-01), Kitamura
patent: 4717925 (1988-01-01), Shibata

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