发明公开
EP1925983A3 Toner and developer, and image forming apparatus, image forming method and process cartridge
有权
调色剂和显影剂,图像形成装置,图像形成方法和处理盒
- 专利标题: Toner and developer, and image forming apparatus, image forming method and process cartridge
- 专利标题(中): 调色剂和显影剂,图像形成装置,图像形成方法和处理盒
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申请号: EP07121216.1申请日: 2007-11-21
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公开(公告)号: EP1925983A3公开(公告)日: 2008-09-03
- 发明人: Nakayama, Shinya , Kotsugai, Akihiro , Iwamoto, Yasuaki , Shitara, Yasutada , Watanabe, Yohichiroh
- 申请人: Ricoh Company, Ltd.
- 申请人地址: 3-6, Nakamagome 1-chome, Ohta-ku Tokyo 143-8555 JP
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: 3-6, Nakamagome 1-chome, Ohta-ku Tokyo 143-8555 JP
- 代理机构: Barz, Peter
- 优先权: JP2006315674 20061122; JP2006316353 20061122
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/087 ; G03G9/10
摘要:
Provided is a toner that comprises a binder resin, a releasing agent, and a colorant, wherein the mass average particle diameter of the toner is 3 µm to 8 µm, the content of particles having a particle diameter of no more than 5 µm is from 60% by number to 90% by number, the binder resin comprises a polyester resin (A) having a softening temperature Tm(A) from no lower than 120°C to no higher than 160°C and a polyester resin (B) having a softening temperature Tm(B) from no lower than 80°C to lower than 120°C, and at least one of the polyester resins (A) and (B) is prepared by condensation polymerization between an alcohol component and a carboxylic acid component, and the alcohol component comprises divalent alcohol of 1,2-propanediol in a content of no less than 65% by mole and consists substantially of aliphatic alcohol; and also provided is a developer that comprises the toner and a carrier
公开/授权文献
- EP1925983B1 Toner and developer 公开/授权日:2014-11-12
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