发明名称 Toner, developing device, image forming apparatus, and image forming method using the toner
摘要 A toner is provided including a colorant; a binder resin (A) which is a polyester resin having no tetrahydrofuran insoluble component, and having a molecular weight distribution such that components having a molecular weight of not greater than 500 are included in an amount of not greater than 4% by weight and a peak is present in a molecular weight range of from 3,000 to 9,000 when measured by gel permeation chromatography (GPC); and a binder resin (B) which is a polyester resin having no tetrahydrofuran insoluble component, and including units of a polycarboxylic acid and a diol having the specific formula; wherein at least one of the binder resins (A) and (B) is prepared in the presence of the specific titanium-containing catalyst, and wherein a weight ratio ((A)/(B)) of the binder resin (A) to the binder resin (B) is from 60/40 to 85/15.
申请公布号 US7638250(B2) 申请公布日期 2009.12.29
申请号 US20070685838 申请日期 2007.03.14
申请人 RICOH COMPANY LIMITED 发明人 HONDA TAKAHIRO;FUSHIMI HIROYUKI;UCHINOKURA OSAMU
分类号 G03G9/08 主分类号 G03G9/08
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