Stable charge transport layer dispersion containing polytetrafluoroethylene particles and hydrophobic silica

A charge transport layer material for a photoreceptor includes at least a polycarbonate polymer, at least one charge transport material, polytetrafluoroethylene particle aggregates having an average size of less than about 1.5 microns, hydrophobic silica and a fluorine-containing polymeric surfactan...

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Bibliographic Details
Main Authors YUH HUOY-JEN, HAMMOND HAROLD F, SANCHEZ MICHAEL, FACCI JOHN S, CHERNIACK HELEN R, YU ROBERT C. U, MCGRATH RACHAEL, CHAMBERS JOHN S
Format Patent
LanguageEnglish
Published 04.12.2001
Edition7
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PERFORMING OPERATIONS
PHOTOGRAPHY
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
PHYSICS
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A charge transport layer material for a photoreceptor includes at least a polycarbonate polymer, at least one charge transport material, polytetrafluoroethylene particle aggregates having an average size of less than about 1.5 microns, hydrophobic silica and a fluorine-containing polymeric surfactant dispersed in a solvent. The presence of the hydrophobic silica enables the dispersion to have superior stability by preventing settling of the PTFE particles. A resulting charge transport layer produced from the dispersion exhibits excellent wear resistance against contact with an AC bias charging roll, excellent electrical performance, and delivers superior print quality.
Bibliography:Application Number: US20000712184