Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1987-11-09
1988-12-06
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
G03G 912
Patent
active
047896167
ABSTRACT:
A process for the preparation of liquid developer compositions containing dyed polymer particles with an average diameter of from about 2 to about 6 microns, which particles are dispersed in an oil base, charge control additives, and stabilizers thereby permitting image transfer efficiencies exceeding 80 percent, which comprises formulating polymer particles by dispersion polymerization in a mixture comprised of a first oil base solvent, and a second solvent with a higher volatility than said first solvent, and further containing an amphipathic steric stabilizer; thereafter dyeing the product resulting; followed by removal of the more volatile second solvent; and subsequently adding to the dyed product a charge control additive.
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Croucher Melvin D.
Hair Michael L.
Ober Christopher K.
Wong Raymond W.
Martin Roland E.
Palazzo E. O.
Xerox Corporation
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