Optical scanner without extra convergent lens

Details Optical scanner without extra convergent lens Optical scanner without extra convergent lens

1986-04-07

1988-01-05

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

047179252

ABSTRACT:
An optical scanner for use with a laser printer, a laser display or the like includes an optical deflector for directly scanning a photoconductive drum with a beam which is emitted from a semiconductor laser and to be focused as a minute spot on the drum. The frequency of an image scanning clock is continuously varied as an approximation to scanning speeds of a spot which is produced by the deflector. The intensity of the beam is controlled by an intensity control circuit.

REFERENCES:
patent: 4251825 (1981-02-01), Mikami
patent: 4443695 (1984-04-01), Kitamura
patent: 4613877 (1986-09-01), Spencer

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