发明授权
US06818370B2 Toner for developing electrostatic latent image, toner cartridge containing the toner and image forming apparatus
有权
用于显影静电潜像的调色剂，含有调色剂的调色剂盒和成像设备
- 专利标题： Toner for developing electrostatic latent image, toner cartridge containing the toner and image forming apparatus
- 专利标题（中）： 用于显影静电潜像的调色剂，含有调色剂的调色剂盒和成像设备
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申请号： US10305191申请日： 2002-11-27
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公开(公告)号： US06818370B2公开(公告)日： 2004-11-16
- 发明人: Osamu Uchinokura , Hiroyuki Fushimi , Kohki Katoh , Shinichiro Yagi , Toshiki Nanya
- 申请人： Osamu Uchinokura , Hiroyuki Fushimi , Kohki Katoh , Shinichiro Yagi , Toshiki Nanya
- 优先权： JP2001-367261 20011130; JP2002-025753 20020201; JP2002-276326 20020920
- 主分类号： G03G9087
- IPC分类号： G03G9087
摘要：
A toner for developing an electrostatic latent image, containing a colorant and a binder resin composed of two different resins (A) and (B), wherein resin (A) is substantially free of tetrahydrofuran insolubles, is selected from polyester resins and polyol resins and has such a molecular weight distribution according to gel permeation chromatography that (a) a main peak is present in a molecular weight of 3000 to 9,000 and (b) that portion of resin (A) having a molecular weight of 500 or less accounts for 4% or less based on a total weight of resin (A), wherein resin (B) is substantially free of tetrahydrofuran insolubles and is a polyester resin containing a diol component represented by the formula (1): and wherein the weight ratio of resin (A) to resin (B) is in the range of 60:40 to 85:15.
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