Electrostatic copying process with charging of the original

Details Electrostatic copying process with charging of the original Electrostatic copying process with charging of the original

1974-10-10

1978-02-28

Gwinnell, Harry J.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

101DIG13, 427 24, G03G 1304, G03G 1308, G03G 1322

Patent

active

040768589

ABSTRACT:
An apparatus and method for electrostatic copying in which the original document is transported on a conductive grounded plate to several processing stations. The document is positioned with its image or front side on the surface of the plate. At a charging station, the back side of the document receives a uniform electrostatic charge which, in the image regions, leaks off through the plate to provide a latent electrostatic image. The document is then transported to a developing station for development of the latent image with toner and then to a transfer station where the toner is transferred to a final support material and fused to such material. Residual toner is then removed at a cleaning station.

REFERENCES:
patent: 2647464 (1953-08-01), Ebert
patent: 3770484 (1973-11-01), Shreeve
patent: 3849126 (1974-11-01), Cantarano
patent: 3928669 (1975-12-01), Takahashi
Translation of German Patent 1,497,174, 1969.

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