Charge control agent combination for a liquid toner
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United States of America Patent
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-
Apr 6, 1993
Grant Date -
N/A
app pub date -
Dec 4, 1991
filing date -
Dec 4, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A liquid toner composition for electrophotography comprising a dispersion which includes a carrier liquid, pigmented or dyed toner particles, an inorganic binder insoluble in the carrier liquid at room temperature and a charge control agent in a charge directing amount, said charge control agent comprising lecithin, 1% to 2.5% by weight, based on the total weight of active components in the charge control agent, of an alkylated N-vinyl pyrrolidone polymer, and 0.5% to 10% by weight, based on the total weight of active components in the charge control agent, of an oil soluble or dispersible anionic surfactant.
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