Dynamic control of laser power in electrophotographic device to

Details Dynamic control of laser power in electrophotographic device to Dynamic control of laser power in electrophotographic device to

1997-03-18

2000-11-21

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347247, 347237, 430147, 430334, B41J 247

Patent

active

061510580

ABSTRACT:
A method for controlling the intensity of an imaging laser of an electrophotographic device in order to produce both positive and negative output. This is accomplished by using a software controlled digital circuit to increase or decrease the power supplied to the laser based on the user's desire to print positive or negative output. When the user desires to print positive output, the laser is set to full power. When the user selects negative mode printing, the power to the laser is digitally reduced by a factor unique to the electrophotographic characteristics of the printing device.

REFERENCES:
patent: 4353628 (1982-10-01), Berman
patent: 4628017 (1986-12-01), Tagoku
patent: 4814886 (1989-03-01), Kuge et al.
patent: 5436735 (1995-07-01), Tanabe et al.
patent: 5805014 (1998-09-01), Price

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