Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1988-10-31
1990-09-04
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
430138, G03G 908
Patent
active
049544128
ABSTRACT:
A process for the preparation of encapsulated toner compositions which comprises (1) providing a core comprised of a monomer capable of being polymerized by free radical polymerization, a colorant or pigment, a free radical initiator, a polymer and a first shell monomer dissolved in the core monomer; (2) dispersing said core components in an aqueous phase containing a surfactant, an antifoaming agent, and a phase transfer agent; (3) adding a second shell monomer to the aqueous phase; (4) encapsulating the core components by accomplishing polymerization of the first and second shell monomers; (5) heating the aqueous phase dispersion of (2) and (3) thereby effecting in situ polymerization of the core monomers; and (6) heat spheroidizing the polymerized shell of (4) by heating.
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Breton Marcel P.
Deslandes Yves
Sacripante Guerino
Crossan Stephen C.
Michl Paul R.
Palazzo E. O.
Xerox Corporation
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