Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1980-01-03
1981-12-15
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430117, 430137, 430904, G03G 1310
Patent
active
043060099
ABSTRACT:
Disclosed is a developer composition which in use exhibits improved depletion characteristics and produces copies of high image density. The developer comprises an organic carrier containing a pigment system, a charge control agent, and a "gelatex" which acts as a fixitive and a dispersant. The gelatex comprises a carrier-insoluble vinyl polymer and a multiply-branched, vinyl polymer which physically entraps or entangles the carrier-insoluble polymer and is on the borderline of solubility in the carrier. The gelatex component is present in the carrier as a stable dispersion and is substantially uniformly depleted as multiple copies are produced, resulting in a significantly reduced rate of image density deterioration as multiple copies are produced.
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Pian Charles H. C.
Veillette Norman T.
Goodrow John L.
Nashua Corporation
Schilling Richard L.
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