Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-07-04
2006-07-04
Rodee, Christopher (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S115000
Reexamination Certificate
active
07070900
ABSTRACT:
Positive liquid electrographic toner compositions are provided comprising a liquid carrier having a Kauri-Butanol number less than about 30 mL and a plurality of positively charged toner particles dispersed in the liquid carrier. The toner particles comprise a polymeric binder comprising at least one amphipathic graft copolymer comprising one or more S material portions and one or more D material portions. The toner composition additionally comprises a charge control adjuvant that is an acid or a base. These compositions have surprising bulk conductivity and charge per mass properties, particularly as the toner particles are depleted from the toner composition during printing operations.
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Commonly assigned U.S. Appl. No. 10/676,381, filed Sep. 30, 2003, entitled “Adjuvants For Negatively Charged Toners” (48 pgs).
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E.B. Caruthers,-G.A. Gibson, J.R. Larson and I.D. Morrison, Xerox Corporation, Joseph C. Wilson Center for Technology, Webster, NY “Modeling of Liquid Toner Electrical Characteristics,” IST&T's Tenth International Congress on Advances in Non-Impact Printing Technologies (1994), pp. 204-209.
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Baker James A.
Herman Gay L.
Qian Julie Y.
Kagan Binder PLLC
Rodee Christopher
Samsung Electronics Company
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