Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1997-08-04
1999-06-15
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430124, 430137, G03G 908
Patent
active
059120991
ABSTRACT:
A magenta toner for developing electrostatic images is formed of a binder resin, and a quinacridone pigment providing an X-ray diffraction spectrum showing two peaks in a Bragg angle (2.theta.) region of 5-10 deg. The magenta toner has an improved light fastness, may have a desired hue comparable to a printing process ink and is suitably used for electrophotographic full-color image formation. The magenta toner may preferably be formed through a process including a first kneading step starting from wet blending of a binder resin and two paste pigments including quinacridone and 2,9-dimethylquinacridone, respectively, under mild conditions not causing crystal transformation to form a master batch and a second kneading step of diluting the master batch together with other additive.
REFERENCES:
patent: 4777105 (1988-10-01), Macholdt et al.
patent: 5437949 (1995-08-01), Kanbayashi et al.
patent: 5561013 (1996-10-01), O'Brien et al.
patent: 5707769 (1998-01-01), Hagi et al.
Patent Abstracts of Japan, vol. 095, No. 001, Feb. 1995 for JP-06 282117.
Patent Abstracts of Japan, vol. 013, No. 422, (P-933) Sep. 1989 for JP-01 154161.
Database WPI, Section Ch, Week, 8422, Derwent, Class A89, AN 84-136148 for JP 58-189652.
Fujita Ryoichi
Ida Tetsuya
Iida Wakashi
Kanbayashi Makoto
Taya Masaaki
Canon Kabushiki Kaisha
Goodrow John
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