Pre-transfer copy sheet cleaning apparatus

Details Pre-transfer copy sheet cleaning apparatus Pre-transfer copy sheet cleaning apparatus

1987-06-26

1988-06-07

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3SH, 355 3R, 355 14R, G03G 1500

Patent

active

047500182

ABSTRACT:
A copier/printer having a transfer station for transferring images from an imaging member to copy sheets includes the improvement of removing debris from the surfaces of copy sheets facing the imaging member before the copy sheets reach the transfer station. At least a pair of cooperating rolls are positioned to form a nip for driving the copy sheets therebetween toward the transfer station. The cooperating rolls include a drive roll and a dielectric roll with the dielectric roll being electrostatically charged by the drive roll and paper through contact and separation during the intercopy gaps between copy sheets in transit to the transfer station through contact with the copy sheets to electrostatically attract debris from the copy sheets.

REFERENCES:
patent: 3912257 (1975-10-01), Gibbons
patent: 4001838 (1977-01-01), Maddox
patent: 4370050 (1983-01-01), Matsui et al.
patent: 4478510 (1984-10-01), Fujii et al.
patent: 4515466 (1985-05-01), Heisler
patent: 4657598 (1987-04-01), Green

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