发明名称 |
Toner, image forming method, and process cartridge |
摘要 |
<p>A toner including a crystalline polyester resin (A), an amorphous resin (B), and a composite resin (C) having a condensation polymerization resin unit and an addition polymerization resin unit is provided. A molecular weight distribution of the toner based on THF-soluble contents thereof has a main peak within a molecular weight range from 1,000 to 10,000 and a half bandwidth of the main peak is 15,000 or less. The molecular weight distribution is determined by gel permeation chromatography. The toner includes chloroform-insoluble contents. A ratio C/R of the toner is within a range from 0.03 to 0.55. C and R represent heights of spectrum peaks specific to the crystalline polyester resin (A) and the amorphous resin (B), respectively, determined by a Fourier transform infrared spectroscopic attenuation total reflection method after the toner is stored in a thermostatic chamber at 45°C for 12 hours.</p> |
申请公布号 |
EP2648045(B1) |
申请公布日期 |
2015.10.14 |
申请号 |
EP20130160433 |
申请日期 |
2013.03.21 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
NAGAYAMA, MASASHI;NAKAJIMA, HISASHI;YAMADA, SAORI;HANATANI, SHINYA;TAKII, MARIKO;SEKIGUCHI, YOSHITAKA |
分类号 |
G03G9/087;G03G9/08 |
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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