Invention Grant
- Patent Title: Toner, method for producing the same, and developer
- Patent Title (中): 调色剂，其制造方法和显影剂
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Application No.: US12891221Application Date: 2010-09-27
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Publication No.: US08455172B2Publication Date: 2013-06-04
- Inventor: Junichi Awamura , Hiroshi Yamashita , Teruki Kusahara , Tsuyoshi Sugimoto , Tomomi Suzuki
- Applicant: Junichi Awamura , Hiroshi Yamashita , Teruki Kusahara , Tsuyoshi Sugimoto , Tomomi Suzuki
- 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: JP2009-226306 20090930
- Main IPC: G03G5/00
- IPC: G03G5/00
Abstract:
A method for producing a toner, containing: dispersing, in an aqueous medium, an oil phase which contains an organic solvent, and a binder resin component contained in the organic solvent, where the binder resin component contains a crystalline polyester resin and an amorphous polyester resin; and removing the organic solvent from the dispersion to obtain the toner, in which the dispersing further contains heating and dissolving the crystalline polyester and the amorphous polyester in the organic solvent to obtain a solution, cooling the solution so as to recrystallize the crystalline polyester resin, and mechanically pulverizing the recrystallized crystalline polyester resin so as to obtain a crystalline polyester dispersion.
Public/Granted literature
- US20110076612A1 TONER, METHOD FOR PRODUCING THE SAME, AND DEVELOPER Public/Granted day:2011-03-31
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