Roneo Alcatel Limited

William G Erskine

Ronald Purvis

Robert F Ridley

Kenneth Moore

Nicholas G Shreeve

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.

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Morpeth, United Kingdom

William G Erskine