Image forming apparatus using pulse width modulation

Details Image forming apparatus using pulse width modulation Image forming apparatus using pulse width modulation

1993-04-15

1995-10-10

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347251, H04N 121

Patent

active

054574897

ABSTRACT:
An image forming machine in which an image is formed on a recording material by an imagewise exposure to a light source that is modulated in accordance with to an image signal. The machine includes a device for generating a reference wave with a predetermined frequency, a generator for generating a pulse width modulating signal to modulate the light source in accordance with the image signal and the reference wave. A ratio of the frequency of the image signal to the predetermined frequency of the reference wave is set based on a relationship 1:(1+n/m) where n and m are positive integers and n is less than m.

REFERENCES:
patent: 4142210 (1979-02-01), Otobe et al.
patent: 4688017 (1987-08-01), Huebner et al.
patent: 4862289 (1989-08-01), Shimada

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