Laser beam scanning device

Details Laser beam scanning device Laser beam scanning device

1989-08-03

1992-01-07

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

G02B 2610

Patent

active

050784633

ABSTRACT:
A laser beam scanning device is comprised of a laser beam source for emitting a laser beam, a polygon mirror rotatable for reflecting the laser beam to deflect the same linearly in primary scanning direction and a main motor for rotating the polygon mirror. An optically converging system converges the laser beam reflected from the polygon mirror onto a photosensitive medium. A secondary scanning system includes a driving source having a pulse motor for shifting the laser beam relative to the photosensitive medium in secondary scanning direction substantially perpendicular to the primary scanning direction to thereby scan the laser beam two-dimensionally on the photosensitive medium. A controlling circuit produces a common clock signal for controlling and driving the main motor and the pulse motor according to the common clock signal.

REFERENCES:
patent: 4139258 (1979-02-01), Oharek
patent: 4288822 (1981-09-01), Hareng et al.
patent: 4302782 (1981-11-01), Gunning
patent: 4312590 (1982-01-01), Harbaugh
patent: 4314154 (1982-02-01), Minoura et al.
patent: 4616132 (1986-10-01), Kessler
Patent Abstracts of Japan, Vol. 8, No. 137 (P-282) [1574], Jun. 26, 1984, Canon K.K.

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