Voltage sensing in A.C. corotrons

Details Voltage sensing in A.C. corotrons Voltage sensing in A.C. corotrons

1987-11-23

1989-01-31

Prescott, A. C.

Photocopying

Including fiber optics

355 14CH, 250325, G03G 1502, H01T 1900

Patent

active

048019674

ABSTRACT:
A voltage measuring device in an electrostatographic arrangement having a photoreceptor member charged to a uniform voltage level prior to imagewise discharge, and including at least a first corotron having a corona producing coronode driven with an A.C. voltage source for neutralizing charge on a surface in the electrostatographic arrangement. A thin conductive wire electrode is arranged parallel and across the photoreceptor surface and parallel to the coronode, to derive a current proportional to the voltage on the photoreceptor surface. Voltage measurements may be taken as a known function of the current derived in the electrode.

REFERENCES:
patent: 3604925 (1971-09-01), Snelling
patent: 4074134 (1978-02-01), Roalson
patent: 4431302 (1984-02-01), Weber
patent: 4456370 (1984-06-01), Hayes, Jr.
patent: 4585323 (1986-04-01), Ewing et al.
patent: 4618249 (1986-10-01), Minor
patent: 4634259 (1987-01-01), Oishi et al.
patent: 4695723 (1987-09-01), Minor
patent: 4699499 (1987-10-01), Hoshika et al.

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