发明名称 |
Toner, image forming apparatus, image forming method and process cartridge using the toner |
摘要 |
<p>A toner containing at least a binder resin, a releasing agent, and a colorant, wherein the binder resin contains at least a polyester resin (A) having a softening point Tm (A) of 120°C to 160°C, a polyester resin (B) having a softening point Tm (B) of 80°C or more and less than 120°C and a composite resin (C) containing a condensation polymerization monomer and an addition polymerization monomer, at least any one of the polyester resins (A) and (B) is a polyester resin prepared by condensation-polymerizing an alcohol component substantially composed of only aliphatic alcohol with a carboxylic acid component, and 65% or more of the alcohol component is 1,2-propanediol.</p> |
申请公布号 |
EP1990683(A3) |
申请公布日期 |
2009.01.21 |
申请号 |
EP20080155945 |
申请日期 |
2008.05.09 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
NAKAYAMA, SHINYA;KOTSUGAI, AKIHIRO;SABU, AKIYOSHI;YAMASHITA, HIROSHI;YAMADA, HIROSHI;AWAMURA, JUNICHI;SUGIMOTO, TSUYOSHI |
分类号 |
G03G9/087 |
主分类号 |
G03G9/087 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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