Air jet means for removing liquid from a conductive surface

Details Air jet means for removing liquid from a conductive surface Air jet means for removing liquid from a conductive surface

1979-08-20

1981-03-31

Moses, Richard L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118 63, 118662, G03G 1510

Patent

active

042590060

ABSTRACT:
An electrostatic copying machine includes a reservoir for liquid developer made up of toner particles in a dispersant. A photoconductive drum, adapted after receiving a latent electrostatic image thereon to pass through the liquid developer in the reservoir and to have an electrostatic image developed on the drum. A metering roller for removing excess dispersant is positioned between the reservoir and an air knife which projects a sharp thin jet of pressurized air at about a 45 degree angle with respect to the surface of the drum. The air pressure produced by the air knife drives any remaining spent dispersant on the surface of the drum back to the reservoir by way of the metering roller and the latent image on the drum is subsequently transferred to paper.

REFERENCES:
patent: 2766720 (1956-10-01), Muller et al.
patent: 3851964 (1974-12-01), Smith et al.
patent: 3957016 (1976-05-01), Yamada et al.
patent: 4168119 (1979-09-01), Nishimura et al.
patent: 4181094 (1980-01-01), Gardiner

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