Biased pretransfer baffle

Details Biased pretransfer baffle Biased pretransfer baffle

1987-06-22

1989-04-18

Grimley, A. T.

Photocopying

Including fiber optics

355 3CH, 355 14TR, G03G 1500

Patent

active

048231584

ABSTRACT:
This invention is a transfer means in a electrographic printing apparatus having a charge retaining member with a relatively high background potential of a first polarity, a transfer corotron having a relatively high potential of a second polarity and providing a transfer region for a transfer of toner to copy sheets, and a pretransfer baffle disposed adjacent to the transfer corotron, the pretransfer baffle being charged to a potential approximately the same as the charged retaining member and having said first polarity, the pretransfer baffle and the charge retaining member forming a gap for the passage of copy sheets to the transfer region, and the copy sheet being in contact with the charge retaining member before reaching the transfer region.

REFERENCES:
patent: 3147679 (1964-09-01), Schaffert
patent: 3850519 (1974-11-01), Weikel, Jr.
patent: 4056390 (1977-11-01), Iizaka et al.
patent: 4396273 (1983-08-01), Matsuyama et al.
patent: 4401383 (1983-08-01), Suzuki et al.
patent: 4415254 (1983-11-01), Nishikawa
patent: 4673280 (1987-06-01), Milton
patent: 4688927 (1987-08-01), Oda et al.
patent: 4736227 (1988-04-01), Till et al.

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