Image forming apparatus

Details Image forming apparatus Image forming apparatus

1987-12-02

1990-01-23

Grimley, Arthur T.

Photocopying

Contact printing

Light boxes

355271, 355274, G03G 1500

Patent

active

048961922

ABSTRACT:
An image forming apparatus, in which a separation charger for separating from a photosensitive member a paper, when no paper exists between the photosensitive member and the separation charger, is applied with AC voltage, with DC voltage of reverse polarity to the charge polarity of the photosensitive member superposed thereon, thereby preventing the occurrence of paper size memory phenomenon or filming phenomenon.

REFERENCES:
patent: 4183653 (1980-01-01), Satomi et al.
patent: 4408863 (1983-10-01), Ogata et al.
patent: 4432631 (1984-02-01), Bacon et al.
patent: 4449808 (1984-05-01), Abreu
patent: 4640606 (1987-02-01), Inamoto
patent: 4688927 (1987-08-01), Oda et al.
patent: 4739363 (1988-04-01), Hoshika et al.

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