Phenolic graphite donor roll

The development apparatus of an electrostatographic printer has a donor roll (74) formed by mixing resin particles with conductive particles and subsequently extruding or centrifugally casting the mixture into a cylindrical shell. The shell is cut to the desired length and journals are attached to e...

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Bibliographic Details
Main Authors ABRAMSOHN, DENNIS A, MANNINO, JOSEPH, SYPULA, DONALD S
Format Patent
LanguageEnglish
French
German
Published 31.03.1993
Subjects
BEARINGS
BLASTING
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
ELEMENTS OR CRANKSHAFT MECHANISMS
ENGINEERING ELEMENTS AND UNITS
FLEXIBLE SHAFTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOLOGRAPHY
LIGHTING
MAGNETOGRAPHY
MECHANICAL ENGINEERING
PHOTOGRAPHY
PHYSICS
ROTARY BODIES OTHER THAN GEARING ELEMENTS
SHAFTS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:The development apparatus of an electrostatographic printer has a donor roll (74) formed by mixing resin particles with conductive particles and subsequently extruding or centrifugally casting the mixture into a cylindrical shell. The shell is cut to the desired length and journals are attached to each end of the shell. The resin particles are thermoset particles preferably phenolic resin particles, and the conductive particles are preferably graphite particles.
Bibliography:Application Number: EP19920308462