CAS: 1934-20-9; Crocein Orange G

专利信息

专利号:US-7432031-B2
优先权日:2005-03-22
标 题:Toner for electrostatic charge developing, production method thereof, developer for electrostatic charge developing using the same, and image forming method
发明人：MIZUTANI NORIYUKI; MAEHATA HIDEO; HAMANO HIROKAZU; TANAKA HIROYUKI; KITAGAWA SOICHIRO; IGUCHI MOEGI
权利人:FUJI XEROX CO LTD
摘要: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:n n10/90≦ BPA ( EO )/ BPA ( PO )≦90/10.n n 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.