发明授权
- 专利标题: Toner, toner storage unit, image forming apparatus, and method for manufacturing toner
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申请号: US16259006申请日: 2019-01-28
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公开(公告)号: US10712681B2公开(公告)日: 2020-07-14
- 发明人: Minoru Masuda , Atsushi Yamamoto , Taichi Nemoto , Junichi Watanabe , Taro Araki , Takeshi Shibuya
- 申请人: Minoru Masuda , Atsushi Yamamoto , Taichi Nemoto , Junichi Watanabe , Taro Araki , Takeshi Shibuya
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5aaf319f
- 主分类号: G03G9/087
- IPC分类号: G03G9/087 ; G03G9/08 ; G03G15/08 ; G03G15/20
摘要:
A toner is provided that contains a crystalline polyester resin comprising a polycondensed resin of a dicarboxylic acid represented by the following formula (1) with a diol represented by the following formula (2). A content of a cyclic ester represented by the following formula (3) in the toner, measured by a thermal extraction gas chromatographic mass spectrometry at a thermal extraction temperature of 160° C., is from 1 to 200 ppm in terms of toluene: where n represents an integer of from 2 to 12; where m represents an integer of from 2 to 12; and where n represents an integer of from 2 to 12, m represents an integer of from 2 to 12, and m+n≥6 is satisfied.
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