Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1993-02-24
1994-11-15
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, 430110, 430904, 4301066, G03G 909
Patent
active
053647190
ABSTRACT:
Toner for developing electrostatic images contains at least a colorant and a charge control dye in a binding resin which is the main component thereof, the toner having a surface dye density of less than 5.times.10.sup.-3 g/g and containing a monomer having a charge control polar group within the range of 0.01 to 5 weight percent based on the weight of the toner. The binding resin is preferably formed from at least one kind of monomer selected from a group consisting of vinyl aromatic monomers, acrylic type monomers, vinyl ester type monomers, vinyl ether type monomers, diolefin type monomers and monoolefin type monomers, and further preferably from at least one kind of monomer selected from a group consisting of styrene, ester acrylate and ester methacrylate. Also, the binding resin may be formed from at least one kind of monomer selected from a group consisting of polyester, phenol and epoxy resins. It is desirable that the colorant be used in 0.1 to 50 parts by weight for every 100 parts by weight of the polymerizable monomer. A magnetic pigment may also be used in addition to or instead of the colorant. In this case, it is desirable that the magnetic pigment be used in 1 to 200 parts by weight, and preferably in 5 to 100 parts by weight, for every 100 parts by weight of the polymerizable monomer.
REFERENCES:
patent: 4547449 (1985-10-01), Alexandrovich et al.
patent: 4777104 (1988-10-01), Matsumoto et al.
patent: 4937157 (1990-06-01), Haack et al.
patent: 4950575 (1990-08-01), Shiozaki et al.
patent: 4950575 (1990-08-01), Shiozaki et al.
Hirano Nobuhiro
Imafuku Tatsuo
Ohta Hideki
Shimoyama Hiroshi
Tokuno Toshiro
Ashton Rosemary
McCamish Marion E.
Mita Industrial Co. Ltd.
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