Liquid developer for an electrostatic copying device

Details Liquid developer for an electrostatic copying device Liquid developer for an electrostatic copying device

1975-06-10

1978-08-29

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118DIG23, 118659, 222109, 354324, G03G 1510

Patent

active

041100298

ABSTRACT:
In an electrostatic copying machine which includes a member for bearing a latent image and a developing device. The developing device includes a member for applying developer liquid to the image bearing member, a container for holding developer liquid, a pump in the container, a supply pipe from the container to the applying member, a return pipe from the applying member to the container, and a filter in the return pipe. The filter has an impinging portion angularly disposed with respect to the flow of developer liquid and disposed above the surface of the developer liquid in the container during pumping and a toner accumulating portion which is immersed in the developer liquid in the container at least when the pump is not operating to soften and dispense any coagulated toner particles accumulated thereon.

REFERENCES:
patent: 625384 (1899-05-01), Dewhurst et al.
patent: 3137225 (1964-06-01), Cuthbert
patent: 3334613 (1967-08-01), Young
patent: 3368525 (1968-02-01), Sacre
patent: 3650196 (1972-03-01), Hosoe et al.
patent: 3683852 (1972-08-01), Yamaguchi et al.
patent: 3704662 (1972-12-01), Johnson et al.
patent: 3722559 (1973-03-01), Hoffman
patent: 3733124 (1973-05-01), Tanaka et al.
patent: 3752119 (1973-08-01), Matkan
patent: 3758204 (1973-09-01), Mochizuki
patent: 3991709 (1976-11-01), Sato et al.

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