Copy sheet contamination prevention

Details Copy sheet contamination prevention Copy sheet contamination prevention

1982-10-22

1984-07-24

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 14TR, 118621, 430 48, G03G 1500, G03G 1514

Patent

active

044615639

ABSTRACT:
An apparatus in which contaminants transferred from a copy sheet to a photoconductive member are attracted back to the copy sheet. During the transfer of the toner powder image from the photoconductive member to the copy sheet, the copy sheet contaminants are attracted to the photoconductive member. Simultaneously with this transfer process, the copy sheet contaminants have their polarity charged to the same polarity as the polarity of the charge on the toner powder image. In this way, the contaminants are attracted back to the copy sheet from the photoconductive member preventing contamination thereof.

REFERENCES:
patent: 3414409 (1968-12-01), Gallo, Jr.
patent: 3707138 (1972-12-01), Cartwright
patent: 3721551 (1973-03-01), Cantarano
patent: 3734724 (1973-05-01), York
patent: 3860857 (1975-01-01), Namiki et al.
patent: 4014605 (1977-03-01), Fletcher
patent: 4077709 (1978-03-01), Borostyan et al.
patent: 4141728 (1979-02-01), Hemphill
patent: 4402591 (1983-09-01), Nakahata

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