Electrostatographic diagnostics system

Details Electrostatographic diagnostics system Electrostatographic diagnostics system

1975-04-28

1976-04-13

Envall, Jr., R. N.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250324, G03G 1502

Patent

active

039506800

ABSTRACT:
In an electrostatographic copying system, where a common imaging surface is subjected to currents from several corona generators during copying, the actual output current of each corona generator is individually measured, and controlled, utilizing individual current measurement resistive paths between the low voltage sides of discrete power supply circuits provided for each corona generator and a common ground path from the imaging surface, and by individually feeding back the shield current of each corona generator in a feedback path separate from the current measurement path. A.C. lead feedback, and switching and measurement circuitry are also disclosed.

REFERENCES:
patent: 3496351 (1970-02-01), Cunningham, Jr.
patent: 3678350 (1972-07-01), Matsumoto et al.
patent: 3769506 (1973-10-01), Silverberg

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