Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1997-09-02
1998-09-22
Martin, Roland
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430137, G03G 909
Patent
active
058112138
ABSTRACT:
A magenta toner for developing an electrostatic image is formed of magenta toner particles containing at least a binder resin, a magenta pigment and a polar resin. The binder resin comprises a styrene polymer, a styrene copolymer or a mixture thereof. The magenta pigment comprises a solid solution pigment of C.I. Pigment Red 122 and C.I. Pigment Violet 19, or a solid solution pigment of C.I. Pigment Red 202 and C.I. Pigment Violet 19, and the polar resin has an acid value of 3-20 mgKOH/g. The magenta toner particles are preferably formed through suspension polymerization of a polymerizable monomer mixture including at least styrene monomer, the solid solution pigment and the polar resin. With the aid of the polar resin, the solid solution pigment can be well dispersed in the resultant magnetic toner particles to fully exhibit its coloring power.
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Canon Kabushiki Kaisha
Martin Roland
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