发明名称 ELECTROPHOTOGRAPHIC TONER
摘要 <p>PROBLEM TO BE SOLVED: To provide a toner of high image quality for which toner cleaning is easy at the time of cleaning by a blade cleaning system or the like and an electrostatic charge image on an image carrier such as a photoreceptor is faithfully reproduced in underwater granulated toner by a small particle size polymerization method or the like. SOLUTION: A toner composition containing a colorant and a denatured polyester resin reactive with active hydrogen is dissolved or dispersed in an organic solvent to form a dissolved material or a dispersed material. The dissolved material or the dispersed material is brought into a reaction with a cross linking agent and/or a stretching agent in an aqueous solvent, a solvent is removed from an obtained dispersed liquid to obtain resin particles containing a colorant. The electrophotographic toner is characterized in that it is made of resin particles in which the average circularity is 0.920 to 0.960.</p>
申请公布号 JP2003140377(A) 申请公布日期 2003.05.14
申请号 JP20010338437 申请日期 2001.11.02
申请人 RICOH CO LTD 发明人 YAMADA HIROSHI;YAMASHITA YUJI;WATANABE SHINKO;SUGIYAMA KOSHIN;YAGI SHINICHIRO;TOMITA MASAMI;EMOTO SHIGERU;MINAMITANI TOSHIKI;TAKIGAWA TADAO
分类号 G03G9/08;G03G9/087;(IPC1-7):G03G9/08 主分类号 G03G9/08
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