Electrometer apparatus for reproduction machines

Details Electrometer apparatus for reproduction machines Electrometer apparatus for reproduction machines

1975-02-24

1976-12-21

Hix, L. T.

Photocopying

Including fiber optics

324 32, 324 72, 355 14, G03G 1500, G01R 3102

Patent

active

039985385

ABSTRACT:
Apparatus to enable potentials applied to various operating components of an electrostatic type reproduction machine to be measured by an electrostatic voltmeter. In one embodiment, the apparatus comprises structures designed to place the sensing element of the voltmeter in predetermined spaced relationship with a test plate, the test plate being electrically connectable to the source of potential to be measured. In another embodiment, the apparatus locates the voltmeter sensing element in predetermined spaced relation with both the reproduction machine photoreceptor and the test plate.
As a further alternative, a source of calibrating potential is provided for use in calibrating the voltmeter through the test plate.

REFERENCES:
patent: 3013203 (1961-12-01), Allen et al.
patent: 3782818 (1974-01-01), Smith
patent: 3852668 (1974-12-01), Hardenbrook et al.

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