发明名称 |
TONER |
摘要 |
A toner is provided that exhibits a high long-term image stability even during high-speed printing and that also exhibits an excellent environmental stability. The toner comprises a binder resin, a colorant, and a nonionic surfactant, wherein the nonionic surfactant has an oxyethylene group (EO) and an oxypropylene group (PO) and has a ratio of the number of moles of the oxypropylene group to the number of moles of the oxyethylene group (PO/EO) of at least 0.01 and not more than 5.00; and when A (μg/g) is defined as a nonionic surfactant content on the surface of the toner that can be extracted by methanol from 1 g of the toner and B (m2/g) is defined as a theoretical specific surface area determined from a toner particle diameter distribution obtained by a precision particle diameter distribution analyzer that operates based on an aperture electrical resistance method, a ratio A/B is at least 100 μg/m2 and not more than 9000 μg/m2. |
申请公布号 |
EP2569670(B1) |
申请公布日期 |
2016.09.14 |
申请号 |
EP20110780735 |
申请日期 |
2011.05.12 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
NONAKA, KATSUYUKI;HASHIMOTO, YASUHIRO;ISONO, NAOYA;SUGIYAMA, AKIRA;TERUI, YUHEI |
分类号 |
G03G9/08;G03G9/09;G03G9/097 |
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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