Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-08-11
2008-10-07
Chapman, Mark A (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S111350, C430S123500, C430S137140
Reexamination Certificate
active
07432031
ABSTRACT:
A toner for electrostatic charge developing prepared by a production method including aggregating one or more kind of particles in a raw material dispersion including the particles to form aggregated particles, and coalescing the aggregated particles by heating. At least one kind of the particles is resin particles including an amorphous polyester resin synthesized by copolymerizing one or more polyvalent carboxylic acids and two or more polyhydric alcohols; at least one of the polyvalent carboxylic acids is polyvalent carboxylic acid having a sulfonic acid group; two of the polyhydric alcohols are an ethylene oxide adduct of bisphenol A and a propylene oxide adduct of bisphenol A; and the following equation is satisfied:in-line-formulae description="In-line Formulae" end="lead"?10/90≦BPA(EO)/BPA(PO)≦90/10.in-line-formulae description="In-line Formulae" end="tail"?In the equation, BPA(EO) represents a total mole amount of the ethylene oxide adduct of bisphenol A used in synthesis of the amorphous polyester resin, and BPA(PO) represents a total mole amount of the propylene oxide adduct of bisphenol A used in synthesis of the amorphous polyester resin.
REFERENCES:
patent: 6346356 (2002-02-01), Ohno et al.
patent: 2003/0129516 (2003-07-01), Nakamura et al.
patent: 2003/0162112 (2003-08-01), Yamashita et al.
patent: 2003/0219667 (2003-11-01), Matsumoto et al.
patent: A-63-282752 (1988-11-01), None
patent: A-05-094043 (1993-04-01), None
patent: A-05-142847 (1993-06-01), None
patent: A-05-313416 (1993-11-01), None
patent: A-06-250439 (1994-09-01), None
Hamano Hirokazu
Iguchi Moegi
Kitagawa Soichiro
Maehata Hideo
Mizutani Noriyuki
Chapman Mark A
Fuji 'Xerox Co., Ltd.
Oliff & Berridg,e PLC
LandOfFree
Toner for electrostatic charge developing, production method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Toner for electrostatic charge developing, production method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toner for electrostatic charge developing, production method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4005431