Liquid toners comprising amphipathic copolymeric binder...

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

Reexamination Certificate

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C430S137220

Reexamination Certificate

active

10975557

ABSTRACT:
The invention provides liquid electrographic toner compositions comprising a liquid carrier having toner particles dispersed in the liquid carrier. The liquid carrier has a Kauri-Butanol number less than about 30 mL. The toner particles comprise polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions. The S material portion comprises at least one soluble component and at least one insoluble component, wherein the insoluble component is the reaction product of monomers having an absolute difference in Hildebrand solubility parameter from the liquid carrier of about 3.0 MPa1/2or greater. These toner particles can exhibit excellent final image durability characteristics, and can also provide toner compositions that provide excellent images at low fusion temperatures on a final image receptor.

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Commonly assigned U.S. Appl. No. 10/975,526, filed Oct. 28, 2004 entitled “Dry Toners Comprising Amphipathic Copolymeric Binder Having Non-Sorptive Components in the Shell Portion Thereof”, in the Name of Jiayi Zhu et al.

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