Electrophotographic liquid toner development apparatus

Details Electrophotographic liquid toner development apparatus Electrophotographic liquid toner development apparatus

1974-12-09

1976-04-27

Stein, Mervin

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

118DIG23, 355 10, 427 17, G03G 1510

Patent

active

039527026

ABSTRACT:
The charge image bearing surface of a web to be developed is partially wrapped around the periphery of a perforated rotatable drum-shaped development electrode. Liquid electrographic toner is forced through the perforated drum against the charge image bearing surface of the recording web for developing the electrostatic image thereon. The drum is rotated to provide a peripheral velocity substantially different than the velocity of the web being developed such as to produce a sliding action between the periphery of the drum and the web. In this manner, the relatively stationary boundary layer of depleted liquid toner carried by the web is disturbed such that the pigment particle depleted layer of toner is replenished by toner forced through the perforated development electrode.

REFERENCES:
patent: 3305459 (1967-02-01), Smith et al.
patent: 3367791 (1968-02-01), Lein
patent: 3502408 (1970-03-01), Brodie
patent: 3618567 (1971-11-01), Levy
patent: 3627410 (1971-12-01), Jugle
patent: 3635195 (1972-01-01), Levy
patent: 3672326 (1972-06-01), Schulze
patent: 3673985 (1972-07-01), Dols
IBM Technical Disclosure; Vol. 8, No. 4, Sept. 1965, Crawford, T. M., Developing Electrostatic Charge Patterns.

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