Method of transfer of image deposits from ferro electric recordi

Details Method of transfer of image deposits from ferro electric recordi Method of transfer of image deposits from ferro electric recordi

1991-08-20

1994-08-30

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

355273, 101487, G03G 1316

Patent

active

053427262

ABSTRACT:
To facilitate transfer of a toner adhered to a ferro-electric recording member on a cylindrical carrier to a substrate web, for example a paper web, a temperature difference is established at the recording member between a toning station, where toner is applied to the ferro-electric surface and a transfer station where the toner is transferred to the substrate web. This temperature difference may be as small as 0.3.degree. C., but may be a few degrees C, in dependence on the printing speed, that is, speed of transfer from the cylindrical recording member to the paper web. The temperature difference may be obtained by applying a cooling element (10, 11) towards the ferro-electric layer (2) of the recording member, or a heater, or for example hot air (16) between the transfer station and retoning of the ferro-electric recording member at the toning station.

REFERENCES:
patent: 3605690 (1971-09-01), Staller
patent: 3824098 (1972-06-01), Bergman et al.
patent: 3899969 (1975-08-01), Taylor
patent: 3909258 (1975-09-01), Kotz
patent: 3935327 (1976-01-01), Taylor
patent: 5183619 (1993-02-01), Snelling
Bergman et al. "Pyroelectric Copying Process", Appl. Phys. Lett., vol. 21, No. 10, 1972, pp. 497-499.

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