发明授权
- 专利标题: Magenta toner, developer, and image forming apparatus
- 专利标题(中): 品红色调色剂,显影剂和图像形成装置
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申请号: US14630783申请日: 2015-02-25
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公开(公告)号: US09488925B2公开(公告)日: 2016-11-08
- 发明人: Ryuta Chiba , Shinya Nakayama , Tsuyoshi Sugimoto , Hiroshi Yamada , Susumu Chiba , Shinsuke Nagai , Hiroshi Yamashita , Masana Shiba
- 申请人: Ryuta Chiba , Shinya Nakayama , Tsuyoshi Sugimoto , Hiroshi Yamada , Susumu Chiba , Shinsuke Nagai , Hiroshi Yamashita , Masana Shiba
- 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: JP2014-041532 20140304
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G9/087 ; G03G9/09
摘要:
A magenta toner for electrophotography, including: a polyester resin; and a colorant containing a naphthol-based pigment, wherein the magenta toner for electrophotography satisfies requirements and below: [G′(100)(THF insoluble matter)] is 1.0×105 Pa to 1.0×107 Pa, and a ratio of [G′(40)(THF insoluble matter)] to the [G′(100)(THF insoluble matter)] is 3.5×10 or less, where the [G′(100)(THF insoluble matter)] is a storage modulus at 100° C. of THF insoluble matter of the toner and the [G′(40)(THF insoluble matter)] is a storage modulus at 40° C. of the THF insoluble matter of the toner; and an X-ray diffraction pattern of the naphthol-based pigment in a crystalline state has a plurality of peaks in a range of 0°≦2θ≦35°, and a sum of half value widths of the peaks is 5° to 10°.
公开/授权文献
- US20150253687A1 MAGENTA TONER, DEVELOPER, AND IMAGE FORMING APPARATUS 公开/授权日:2015-09-10
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