Invention Grant
- Patent Title: Method for producing toner
- Patent Title (中): 调色剂的制造方法
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Application No.: US12357932Application Date: 2009-01-22
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Publication No.: US08029967B2Publication Date: 2011-10-04
- Inventor: Masateru Kawamura , Jun Ikami , Takanori Uno , Tomoaki Hattori
- Applicant: Masateru Kawamura , Jun Ikami , Takanori Uno , Tomoaki Hattori
- Applicant Address: JP Nagoya-shi, Aichi-ken
- Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee: Brother Kogyo Kabushiki Kaisha
- Current Assignee Address: JP Nagoya-shi, Aichi-ken
- Agency: Banner & Witcoff, Ltd.
- Priority: JP2008-014179 20080124
- Main IPC: G03G9/08
- IPC: G03G9/08

Abstract:
Provided is a method for producing a toner including the steps of: preparing a resin liquid by mixing at least a binder resin made of polyester resin and a colorant with an ester organic solvent represented by the following general formula (1); dispersing the resin liquid in an aqueous medium to form an emulsion; and removing the ester organic solvent from the emulsion to produce a toner, in which the ester organic solvent before the preparation of the resin liquid contains water in an amount of not less than 1% by weight and up to the saturation solubility at 25° C. to the ester organic solvent: (in which R1 is a hydrogen atom or a methyl group, and R2 is an alkyl group having 1 to 4 carbon atoms).
Public/Granted literature
- US20090191477A1 Method For Producing Toner Public/Granted day:2009-07-30
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