Composite to enable contact electrostatic voltage sensing

Details Composite to enable contact electrostatic voltage sensing Composite to enable contact electrostatic voltage sensing

1991-11-21

1993-06-15

DeBoer, Todd E.

Electricity: electrical systems and devices

Electric charging of objects or materials

310251, 355118, H01R 3924, G03G 1302

Patent

active

052204812

ABSTRACT:
A contact for use in contacting a moving photoreceptor surface, is formed from a structure (preferably a pultrusion) including a plurality of continuous strand fibers of high electrical resistance, and a thermally stable insulating component between the resistive fibers. The resistive fibers are configured to form a brush extending from the insulating component for contact with the photoreceptor surface. The resistance of the fibers is sufficiently high to reduce leakage of surface charges away from the photoreceptor and to provide a high resistance between adjacent fibers. The insulating component, which serves to interface the carbon filaments from each other and from a host polymer may comprise an organic compound, such as a polyimide composition, or may comprise an inorganic compound such as Al.sub.2 O.sub.3 or water glass, and is thermally stable below about 1000.degree. C. The host polymer, on the other hand volatilizes rapidly and cleanly upon direct exposure to laser energy.

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patent: 4801967 (1989-01-01), Snelling

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