Invention Grant
US07695883B2 Toner and developer, toner container, process cartridge, image forming apparatus, and image forming method using the same
有权
调色剂和显影剂，调色剂容器，处理盒，成像设备和使用其的图像形成方法
- Patent Title: Toner and developer, toner container, process cartridge, image forming apparatus, and image forming method using the same
- Patent Title (中): 调色剂和显影剂，调色剂容器，处理盒，成像设备和使用其的图像形成方法
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Application No.: US12343574Application Date: 2008-12-24
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Publication No.: US07695883B2Publication Date: 2010-04-13
- Inventor: Masahide Yamada , Ryota Inoue , Naohiro Watanabe , Shigeru Emoto , Masahiro Ohki , Akinori Saitoh , Tsunemi Sugiyama , Shinichi Wakamatsu , Toshiki Nanya , Naohito Shimota , Hiroshi Yamada , Junichi Awamura , Tomomi Suzuki , Kazuyuki Hirai , Kazushige Yasumatsu
- Applicant: Masahide Yamada , Ryota Inoue , Naohiro Watanabe , Shigeru Emoto , Masahiro Ohki , Akinori Saitoh , Tsunemi Sugiyama , Shinichi Wakamatsu , Toshiki Nanya , Naohito Shimota , Hiroshi Yamada , Junichi Awamura , Tomomi Suzuki , Kazuyuki Hirai , Kazushige Yasumatsu
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-137291 20050510; JP2005-144453 20050517
- Main IPC: G03G9/08
- IPC: G03G9/08
Abstract:
To provide a toner containing an ethyl acetate-soluble polyester component and an ethyl acetate-insoluble polyester component, wherein the toner is granulated in an aqueous medium, the ethyl acetate-insoluble polyester component is obtained by elongating and/or cross-linking a modified polyester resin during granulating and/or after granulating, the modified polyester resin is produced by condensation polymerization of an acid component and at least one type of diol compound selected from aliphatic diol and alicyclic diol in the presence of a catalyst, and the mass average molecular weight of the modified polyester resin is 10,000 to 100,000.
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