Apparatus for developing electrostatic images with liquid toner

Details Apparatus for developing electrostatic images with liquid toner Apparatus for developing electrostatic images with liquid toner

1975-04-10

1977-03-22

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118DIG23, 354317, 427 15, G03G 1510

Patent

active

040133567

ABSTRACT:
An electrophotographic copying machine wherein electrostatic images at the periphery of a rotary cylindrical printing base are transported below a grounded developing electrode having in its concave underside a series of shallow grooves each receiving fresh liquid toner through one or more inclined supply ports at the upstream end and each discharging spent liquid toner into one or more inclined evacuating ports at the downstream end thereof. The flow of liquid toner in the grooves is laminar, and the speed of liquid flow in the grooves equals or approximates the speed of movement of the printing base relative to the electrode. The electrode carries several distancing rolls which extend beyond its underside and the electrode is biased by springs so that the distancing rolls bear against and roll along the periphery of the printing base.

REFERENCES:
patent: 2587350 (1952-02-01), Maiwald
patent: 3081687 (1963-03-01), Takats
patent: 3371651 (1968-03-01), Johnson et al.
patent: 3758204 (1973-09-01), Mochizuki
patent: 3791345 (1974-02-01), McCutcheon
patent: 3901188 (1975-08-01), Eberlein
patent: 3943268 (1976-03-01), Sato

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