Paper feed and image transfer for electrostatographic copiers an

Details Paper feed and image transfer for electrostatographic copiers an Paper feed and image transfer for electrostatographic copiers an

1980-08-12

1982-12-07

Rubinson, G. Z.

Photocopying

Including fiber optics

355 35H, 355 14TR, G03G 1518

Patent

active

043623786

ABSTRACT:
In apparatus for electrostatographic reproduction of an original document having an electrostatographic recording member supported on a rotatable drum or belt, a developing station, a copy sheet supply station and a transfer roller at which developed toner images are transferred by an applied electric field from the recording member to the copy sheet, the transfer roller is arranged to operate in timed relationship to the operation of the copy sheet supply station and rotation of the drum or belt so that the leading edge of each copy sheet passes through the transfer zone before the electric field is applied. The copy sheets therefore separate or strip cleanly from the drum or belt. The apparatus may be a duplicator in which the recording member is imaged at a relatively slow speed in a first cycle of the drum or belt and the image is preserved for use in subsequent high speed cycles of the drum or belt.

REFERENCES:
patent: 4025187 (1977-05-01), Taylor et al.
patent: 4135804 (1979-01-01), Schoppe et al.
patent: 4155545 (1979-05-01), Yanagawa et al.
patent: 4168059 (1979-09-01), Potoczek et al.
patent: 4171157 (1979-10-01), Suzuki
patent: 4257700 (1981-03-01), Tsuda et al.
patent: 4260242 (1981-04-01), Nishikawa

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