Photocopying – Including fiber optics
Patent
1981-12-31
1983-09-06
Prescott, A. C.
Photocopying
Including fiber optics
355 3R, 355 3CH, 355 14CH, 361212, 361221, G03G 1500
Patent
active
044025939
ABSTRACT:
An improvement in an electrophotographic copying machine having a movable photoconductor web rotatably mounted on at least a pair of rollers, the web having an insulative support layer, an electrically conductive layer disposed on the support layer, and a photoconductive layer disposed on the electrically conductive layer. The improvement comprises a stationary contact electrically connectable to a fixed electrical potential and slidably in contact with the electrically conductive layer, the stationary contact consisting of a grounding brush having a multiplicity of fibers, each of said fibers comprising a nylon 6 filamentary polymer substrate having finely divided, electrically conductive particles of carbon black suffused through the surface of the filamentary polymer substrate, the electrically conductive particles being present inside the filamentary polymer substrate as a uniformly dispersed phase independent of the phase of the filamentary polymer substrate in an annular region located at the periphery of the filamentary polymer substrate and extending inwardly along the length thereof, the electrically conductive particles being present inside the filamentary polymer substrate in an amount sufficient to render the electrical resistance of the electrically conductive textile fiber not more than about 10.sup.9 ohms/cm.
REFERENCES:
patent: 4049343 (1977-09-01), Hermanson
patent: 4273437 (1981-06-01), Neumann
patent: 4336565 (1982-06-01), Murray et al.
patent: 4344698 (1982-08-01), Zeman
patent: 4352143 (1982-09-01), Uno
Bernard Richard A.
Edelman Peter G.
Nagarsheth Pushpavadan S.
Pittney Bowes Inc.
Prescott A. C.
Scribner Albert W.
Sklar Lawrence E.
Soltow, Jr. William D.
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