Exposure control for selective speed xerographic printing and th

Details Exposure control for selective speed xerographic printing and th Exposure control for selective speed xerographic printing and th

1979-03-19

1982-03-09

Psitos, Aristotelis M.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358127, 358302, 346 76L, 346160, H04N 122, H04N 140, H04N 580

Patent

active

043192858

ABSTRACT:
A selective speed xerographic processor having a laser for exposing a photoreceptor at any one of a plurality of different printing rates in response to a video signal is characterized by including an adjustable optical attenuator and an adjustable electrical attenuator for coarsely and more precisely, respectively, normalizing the exposure process. The processor may be used to advantage as a printer for a facsimile systems offering a choice of several different document transmission times.

REFERENCES:
patent: 2274530 (1942-02-01), Collins
patent: 3316348 (1967-04-01), Hufnagel et al.
patent: 3750189 (1973-07-01), Fleischer
patent: 3858004 (1974-12-01), Mason et al.
patent: 4197560 (1980-04-01), Minerd

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