Electrophotographic carrier particles coated with polymer mixture
AssigneeXerox Corporation
InventorsJohn A. Creatura, George R. Hsu
Life of this patent
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Abstract
Disclosed is a carrier and developer composition, and a process for the preparation of carrier particles with substantially stable conductivity parameters which comprises (1) providing carrier cores and a polymer mixture; (2) dry mixing the cores and the polymer mixture; (3) heating the carrier core particles and polymer mixture, whereby the polymer mixture melts and fuses to the carrier core particles; and (4) thereafter cooling the resulting coated carrier particles.
Claims5
A particulate carrier composition for electrophotographic tones comprised of core particles with a coating thereover comprised of a fused film of a mixture of first and second polymers which are not in close proximity in the triboelectric series, said mixture being selected from the group consisting of polyvinylidene fluoride and polyethylene;
- polymethylmethacrylate and copolyethylene vinyl acetate;
- copolyvinylidenefluoride tetrafluoroethylene and polyethylenes;
- copolyvinylidenefluoride tetrafluoroethylene and copolyethylene vinyl acetate;
- and polymethylmethacrylate and polyvinylidene fluoride.
Dependencies are inferred from the claim text.