Electrostatic photographic copying machine

Details Electrostatic photographic copying machine Electrostatic photographic copying machine

1977-06-02

1979-12-18

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DR, 355 3DD, 355 3SH, 355 15, 355 16, G03G 1500

Patent

active

041792114

ABSTRACT:
An electrostatic photographic copying machine includes a device for automatically exchanging used master paper with fresh master paper on a master holding body, and for indicating when such an exchange should be initiated. The machine includes an apparatus for cleaning the fixing roller, an apparatus for adjusting the amount of toner supplied to the developer, a transfer device whereby improper discharge is prevented, a transfer paper jam detector, and a device for improved mixing of developer.

REFERENCES:
patent: 3186838 (1965-06-01), Graff et al.
patent: 3480361 (1969-11-01), Doi et al.
patent: 3600086 (1971-08-01), Cates
patent: 3615128 (1971-10-01), Bhagat
patent: 3796183 (1974-03-01), Thettu
patent: 3829208 (1974-08-01), Van Meijel
patent: 4068942 (1978-01-01), Penwell
patent: 4086006 (1978-04-01), Hauser et al.

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