- 专利标题： Toner for electrophotography, developer for electrophotography, image forming apparatus, and process cartridge
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申请号： US15696818申请日： 2017-09-06
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公开(公告)号： US10254668B2公开(公告)日： 2019-04-09
- 发明人: Yoshitaka Yamauchi , Hisashi Nakajima , Kazumi Suzuki , Namie Suzuki
- 申请人： Yoshitaka Yamauchi , Hisashi Nakajima , Kazumi Suzuki , Namie Suzuki
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd
- 当前专利权人： Ricoh Company, Ltd
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2016-175889 20160908
- 主分类号： G03G9/08
- IPC分类号： G03G9/08 ; G03G9/087 ; G03G15/08
摘要：
A toner for electrophotography, the toner including an amorphous polyester resin, an addition polymerization-based resin, and wax that is ester wax or carnauba wax, wherein the toner satisfies relationships represented by Formula 1 and Formula 2 below, SPr>SPw>SPd (Formula 1) |SPr−SPw|>|SPw−SPd| (Formula 2) where SPr is a value of a solubility parameter of the amorphous polyester resin, SPw is a value of a solubility parameter of the wax, and SPd is a value of a solubility parameter of the addition polymerization-based resin.
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