Photocopying – Including fiber optics
Patent
1977-07-08
1979-06-26
Moses, R. L.
Photocopying
Including fiber optics
96 14, 271DIG2, G03G 1500
Patent
active
041591720
ABSTRACT:
A transfer sheet separator for use with electrophotographic copying machines in which either a toner image or an electrostatic latent image on a photoreceptor drum is transferred to a transfer sheet. A separation roller is arranged near to the drum surface at a separation station for separating the image transferred sheet which inevitably carries residual charge from the drum by electrostatic attraction. To this end, the roller is made from conductive material and either connected to the ground so as to be able to carry the opposite polarity charge than said charge by induction or floated and applied a bias potential of the opposite polarity. Alternatively, the roller is made of dielectric material and charged as well through a rubbing action, for example.
With this electrostatic separation means, mechanical means cooperates for practical purposes to ensure such operation.
REFERENCES:
patent: 3508824 (1970-04-01), Leinbach et al.
patent: 3620615 (1971-11-01), Volkers
patent: 3626260 (1971-12-01), Kimura et al.
patent: 3684363 (1972-08-01), Ito et al.
patent: 3770345 (1973-11-01), Kawakubo et al.
patent: 3817615 (1974-06-01), Adachi et al.
Okamoto Toyoo
Tani formerly Nishikawa Tatsuo
Moses R. L.
Ricoh & Company, Ltd.
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