Image forming apparatus which corrects the image forming factors

Details Image forming apparatus which corrects the image forming factors Image forming apparatus which corrects the image forming factors

1989-10-04

1991-10-15

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

355214, 355246, G03G 1500

Patent

active

050578677

ABSTRACT:
An electrophotographic copier, facsimile machine, laser printer or similar image forming apparatus having a photoconductive element. The apparatus corrects a bias voltage for development, amount of charge, amount of exposure or similar image forming factor on the basis of an inactive state of the photoconductive element. When the duration of the inactive state is short and does not need a correction of the image forming factor, an image forming procedure is executed immediately. When the inactive state has lasted a long time, the image forming factor is corrected before the start of an image forming procedure.

REFERENCES:
patent: 4564287 (1986-01-01), Suzuki et al.
patent: 4583835 (1986-04-01), Harada
patent: 4797707 (1989-01-01), Iwahashi et al.
patent: 4855766 (1989-08-01), Suzuki
patent: 4982232 (1991-01-01), Naito

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