Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1992-04-10
1994-08-30
Kight, III, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430107, 430108, 430109, 430110, 430111, 430115, 430907, 430908, 525445, G03G 908, G03G 913
Patent
active
053427246
ABSTRACT:
Polymeric electrophotographic toner and developer compositions are produced by methods including conventional as well as limited coalescence manufacturing techniques. The compositions are prepared by heating a diacid and a diol under conditions effective to form a chain transfer polyester, wherein either the diacid or the diol contain a disulfide moiety. The polyester is reacted with one or more vinyl monomers to form a block copolymer having polyester blocks linked to polyvinyl blocks by sulfide groups previously constituting the disulfide moiety. The block copolymer is reduced to a particulate form to a size suitable for use as an electrophotographic toner by conventional methods, evaporation limited coalescence, and suspension limited coalescence.
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Dodson Shelley A.
Eastman Kodak Company
Kight III John
Montgomery Willard G.
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