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Patent Searching and Data


Title:
FULL-COLOR ELECTROPHOTOGRAPHIC TONER KIT
Document Type and Number:
Japanese Patent JP3521373
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a full-color electrophotographic toner kit with which both of the transparency required for color toner and the shielding property required for black toner can be realized and an excellent full-color image without offset can be obtd.
SOLUTION: The color toner contains processed pigments having 100 to 150°C softening point and a release agent. The processed pigments are prepared by preliminarily dispersing pigments in a styrene acryl resin and a polyester resin which is prepared from at least an aromatic carboxylic acid of at least two or more valences and aromatic alcohol of two or more valences and has 100 to 150°C softening point and the a crosslinked structure in molecules. The styrene acryl resin forms a phase separation structure with 0.5 to 2.0μm discontinuous phase in the polyester resin. The black toner has an almost same structure as that of the color toner, but the softening point of the black toner is higher than the softening point of the color toner.


Inventors:
Nagase, Tatsuya
Umeno, Tomoyasu
Kitani, Ryuji
Shirase, Akizo
Application Number:
JP1996000076559
Publication Date:
April 19, 2004
Filing Date:
March 29, 1996
Export Citation:
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Assignee:
KONICA CORP
International Classes:
G03G9/08; G03G9/087; G03G9/09; G03G13/01; (IPC1-7): G03G9/08; G03G9/087; G03G9/09