Laser beam scanning apparatus

Details Laser beam scanning apparatus Laser beam scanning apparatus

1988-09-29

1991-02-12

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 63, H04N 910

Patent

active

049928589

ABSTRACT:
A laser beam scanning apparatus deflects laser beams of different wavelengths to scan an object or medium in at least one direction using an acousto-optic deflector. The angle of scanning deflection is dependent on the frequency of the drive signal applied to the acousto-optic deflector and the wavelength of each laser beam, the deflection resulting in color dispersion of the laser beam. A pair of photosensors which are sensitive to the corresponding wavelengths of the laser beams produce start and stop signals during a scanning time period. In response to these signals, writing or reading clock signals are generated and their durations are adjusted to be substantially the same for each laser beam during the scanning time period.

REFERENCES:
patent: 4736110 (1988-04-01), Awamura
patent: 4833528 (1989-05-01), Kobayashi
patent: 4835601 (1989-05-01), Kobayashi

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