Electrographic development apparatus

Details Electrographic development apparatus Electrographic development apparatus

1979-04-04

1981-10-06

Pianalto, Bernard D.

Coating apparatus

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

With means to orient coating particles

118651, 118655, 118657, 118658, G03G 1506

Patent

active

042929210

ABSTRACT:
Improved electrographic development apparatus and procedure for use with partially-conductive developer employs transport of the developer through a first development zone in a direction generally countercurrent to a moving image member and through a second development zone in a direction generally cocurrent to the moving image member. The extent of image development within each such zone is controlled by the rate of developer transport and/or the magnitude of developer bias, so that overall development of the different portions of large solid image areas (particularly leading and trailing portions of such areas) is equalized.

REFERENCES:
patent: 3643629 (1972-02-01), Kangas et al.
patent: 3664857 (1972-05-01), Miller
patent: 4131357 (1978-12-01), Forbes

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