Electrophotographic apparatus

Details Electrophotographic apparatus Electrophotographic apparatus

1996-02-29

1997-05-06

Moses, R. L.

Electrophotography

Control of electrophotography process

Of plural processes

399 51, 399 69, G03G 2114, G03G 1520

Patent

active

056276281

ABSTRACT:
When a CPU switches the power supply to a fusing lamp to OFF from ON state while an exposing lamp stays on, the CPU suspends a feedback phase control of the exposing lamp and carries out a phase control of the exposing lamp based on the phase control data pre-stored in a RAM for a predetermined period before and after the switching. The exposing lamp is hardly affected by the variance in voltage caused by the switching of the power supply state to the fusing lamp, and therefore can emit exposing light in a constant amount to form an image. Thus, it becomes possible to produce a satisfactory copy image with substantially no inconsistency in copy density.

REFERENCES:
patent: 4534642 (1985-08-01), Miura et al.
patent: 4857960 (1989-08-01), Hosaka et al.

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