Photoreceptor dark current leakage detecting apparatus for xerog

Details Photoreceptor dark current leakage detecting apparatus for xerog Photoreceptor dark current leakage detecting apparatus for xerog

1975-06-23

1977-05-03

Moses, Richard L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

118 8, 118658, 324158D, 355 3DD, 355 3R, G03G 1500

Patent

active

040211126

ABSTRACT:
A photoreceptor dark current leakage detecting device for use in determining the temperature induced current leakage of photoreceptors. The device as aforesaid comprises a miniature copy of, or segment from a photoreceptor class with electrical leads attached thereto and by means of which a reference bias can be applied thereacross. A current sensing meter introduced in circuit with the device measures current leakage. In a second embodiment, output from the device controls the operating bias on one or more of the components of an electrostatic reproduction machine to compensate for changes in photoreceptor current leakage.

REFERENCES:
patent: 3322539 (1967-05-01), Redington
patent: 3449658 (1969-06-01), Robinson et al.
patent: 3654893 (1972-04-01), Piper et al.
patent: 3779203 (1973-12-01), Altmann
patent: 3782818 (1974-01-01), Smith
patent: 3788739 (1974-01-01), Coriale
patent: 3891316 (1975-06-01), Whited
patent: 3918395 (1975-11-01), Fearnside
patent: 3922380 (1975-11-01), Rowell et al.

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