发明名称 |
Positively chargeable toner, image forming method |
摘要 |
<p>A positively chargeable toner suitable to be carried on a cylindrical developer-carrying member having a resinous surface for developing an electrostatic latent image is formed from a composition including a binder resin, an imidazole compound and a colorant. The binder resin comprises at least one member selected from the group consisting of (i) a mixture of vinyl resin having a carboxyl group and a vinyl resin having a glycidyl group, (ii) a vinyl resin having both a carboxyl group and a glycidyl group, and (iii) a vinyl resin having a carboxyl group and a glycidyl group in a form reacted with each other. The imidazole compound is a compound having an imidazole unit represented by formula (1) below: <CHEM> wherein R1 - R4 independently denote hydrogen or a substituent as specified. In some cases, two or more such imidazole units can be included in a combined form to provide the imidazole compound. The imidazole compound is effective for promoting a crosslinking reaction between the carboxyl group and the glycidyl group to provide the toner with improved fixability and anti-offset property in combination. <IMAGE></p> |
申请公布号 |
EP1011032(A1) |
申请公布日期 |
2000.06.21 |
申请号 |
EP19990125111 |
申请日期 |
1999.12.16 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TANIKAWA, HIROHIDE;FUJIMOTO, MASAMI;KOBORI, TAKAKUNI;FUJIKAWA, HIROYUKI |
分类号 |
G03G9/08;G03G5/10;G03G9/087;G03G9/09;G03G9/097;G03G15/08;(IPC1-7):G03G9/09 |
主分类号 |
G03G9/08 |
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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