Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-06-14
2005-06-14
Goodrow, John L (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, C523S160000
Reexamination Certificate
active
06905807
ABSTRACT:
A liquid ink for developing electrophotography images comprises:a) a carrier liquid having a Kauri-Butanol number less than 30;b) a grafted co-polymer comprising a (co)polymeric steric stabilizer covalently bonded to a thermoplastic (co)polymeric core that is insoluble in the carrier liquid, wherein the grafted co-polymer is derived from at least a polymerizable organic compound having at least one acid group or at least one acid group;c) a dispersant having, respectively, at least an amine group or at least one acid group to form an acid-base copolymer-dispersant system or a base-acid copolymer-dispersant system, wherein the mole ratio of the amine group to the acid group is between 0.3 and 1.5 in the base-acid copolymer-dispersant system and the mole ratio of the acid group to the base group in the acid-base copolymer dispersant system is between 0.3 and 1.5; andd) a positive charge director with the acid-base copolymer charge dispersant system and a negative charge director with the base-acid copolymer charge-dispersant system.
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Baker James A.
Law Kam W.
Morrison Eric D.
Qian Julie
Wolters Christopher J.
Mark A. Litman & Associates P.A.
Samsung Electronics Co,. Ltd.
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