Dual-beam, reflex-controlled laser circuit for an electrophotogr

Details Dual-beam, reflex-controlled laser circuit for an electrophotogr Dual-beam, reflex-controlled laser circuit for an electrophotogr

1996-03-29

1998-07-07

Nguyen, Matthew V.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

H04N 121

Patent

active

057776598

ABSTRACT:
A raster output scanner for use in an electrophotographic printer uses two light sources to create two scan lines on a photoreceptor simultaneously. The two light sources are operated in an alternating fashion, and the intensity of the light sources is monitored by a single sensor. The sensor is associated with a reflex-based exposure control system, which operates to shut off a particular light source when the exposure created by the light source reaches a threshold level.

REFERENCES:
patent: 4288822 (1981-09-01), Hareng et al.
patent: 4841137 (1989-06-01), Mochizuki et al.
patent: 5444463 (1995-08-01), Kovacs
patent: 5497181 (1996-03-01), Paoli
patent: 5583557 (1996-12-01), Yamamoto et al.
patent: 5668590 (1997-09-01), Maruo et al.

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