Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2008-01-22
2008-01-22
Chapman, Mark A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S114000
Reexamination Certificate
active
10978636
ABSTRACT:
Methods of preparing a liquid electrographic toner composition are provided, wherein a polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions is first prepared in a reaction solvent, wherein the reaction solvent comprises less than about 10% aromatic components by weight and has a Kauri-Butanol number less than about 30 mL. Toner particles are then formulated in the reaction solvent and dried. The dried toner particles are then redispersed in a carrier liquid that has substantially the same chemical constitution as the reaction solvent to form a redispersed liquid electrographic toner composition. Products and kits are also provided.
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Co-pending U.S. Appl. No. 10/880,799, filed Jun. 30, 2004 entitled “Extrusion Drying Process for Toner Particles Useful in Electrography”, in the name of Moudry et al.
Co-pending U.S. Appl. No. 10/881,637, filed Jun. 30, 2004 entitled “Drying Process for Toner Particles Useful in Electrography”, in the name of Chou et al.
Co-pending U.S. Appl. No. 10/978,652, filed Oct. 31, 2004 entitled “Liquid Toners Comprising Toner Particles Prepared in a Solvent Other Than the Carrier Liquid”, in the name of Chou et al.
Co-pending U.S. Appl. No. 10/978,671, filed Oct. 31, 2004 entitled “Printing Systems and Methods for Liquid Toners Comprising Dispersed Toner Particles”, in the name of Chou et al.
Chou Hsin Hsin
Fordahl A. Kristine
Lozada Manuel
Teschendorf Brian
Chapman Mark A.
Kagan Binder PLLC
Samsung Electronics Company
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