Cleaning control device for image forming equipment

Details Cleaning control device for image forming equipment Cleaning control device for image forming equipment

1990-10-19

1992-12-29

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355296, G03G 2100

Patent

active

051755840

ABSTRACT:
A cleaning control device incorporated in electrophotographic image forming equipment for controlling the removal of toner remaining on a photoconductive element or image carrier after image transfer. Before the removal of the remaining toner, the surface potential of the photoconductive element is controlled to a predetermined value on the basis of the amount of remaining toner. Since the reference potential of the photoconductive element is determined in association with the amount of remaining toner, a minimum electric field capable of effecting cleaning is applied at all times. The reference potential is changed in response to aging. The remaining amount of toner is detected by a photoelectric transducer, while the electric field for cleaning is controlled in response to the detected amount of remaining toner. Further, the reference potential is changed in response to the instantaneous humidity around the photoconductive element.

REFERENCES:
patent: 4395112 (1983-07-01), Miyakawa et al.
patent: 4945389 (1990-07-01), Usui et al.
patent: 4962407 (1990-10-01), Ueda

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