AB diblock copolymers as toner particle dispersants for electrostatic liquid developers
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United States of America Patent
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Apr 21, 1992
Grant Date -
N/A
app pub date -
May 2, 1990
filing date -
May 2, 1990
priority date (Note) -
Expired
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Abstract
Electrostatic liquid developer consisting essentially of (A) a nonpolar liquid having a Kauri-butanol value of less than 30, present in a major amount, (B) thermoplastic resin particles having an average by area particle size of less than 10 .mu.m, and coated with (C), (C) an AB diblock copolymer toner particle dispersant as defined, and (D) a nonpolar liquid soluble ionic or zwitterionic compound. Optionally a colorant and charge adjuvant are present. The process of making the electrostatic liquid developer is described. The electrostatic liquid developer is useful in copying, making proofs including digital color proofs, lithographic printing plates, and resists.
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