Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Patent
1992-09-30
1994-07-19
Rosasco, Steve
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
430108, 427221, G03G 500
Patent
active
053308743
ABSTRACT:
A process for the preparation of carrier particles which comprises the dry coating of a carrier or carrier cores with conductive submicron polymeric particles containing from about 1 to about 50 weight percent of conductive fillers, and wherein said conductive polymer particles are prepared by mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 5 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.05 to about 1 micron in water; polymerizing the resulting suspension by heating; subsequently washing and drying the product; thereafter heating the carrier core or carrier cores and the resulting conductive polymer particles to enable fusing thereof to said core or cores; and cooling the carrier particles obtained, which particles have a conductivity of from between about 10.sup. -4 to about 10.sup.-10 mho-cm.sup.-1.
REFERENCES:
patent: 3954898 (1976-05-01), Hirota et al.
patent: 4055684 (1977-10-01), Baltazzi et al.
patent: 4514485 (1985-04-01), Ushiyama et al.
patent: 4923776 (1990-05-01), Hedvall et al.
patent: 5015550 (1991-05-01), Creatura et al.
patent: 5043404 (1992-08-01), Mahabadi et al.
patent: 5236629 (1993-08-01), Mahabadi et al.
Barbetta Angelo J.
Creatura John A.
Mahabadi Hadi K.
Ng T. Hwee
Wright Denise Y.
Palazzo E. O.
Rosasco Steve
Xerox Corporation
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