Invention Grant
- Patent Title: Method for producing positive charging toner
- Patent Title (中): 正电充电调色剂的制造方法
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Application No.: US12415228Application Date: 2009-03-31
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Publication No.: US08119319B2Publication Date: 2012-02-21
- Inventor: Masateru Kawamura , Yasutomo Imai
- Applicant: Masateru Kawamura , Yasutomo Imai
- 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: JP2008-092016 20080331
- Main IPC: G03G9/08
- IPC: G03G9/08

Abstract:
The present teaching provides a method for producing a positive charging toner that can exhibit stable charge characteristics. According to the present teaching, a positive charging toner is produced by preparing a base particle suspension having a conductivity not higher than 70 μS/cm and comprising base particles that are obtained by mixing and emulsifying an aqueous medium and a resin solution containing the polyester resin; producing toner base particles by mixing the base particle suspension with a charge control resin microparticle suspension containing charge control resin microparticles; causing the charge control resin microparticles to adhere to the surfaces of the base particles; and washing the toner base particles.
Public/Granted literature
- US20090246681A1 Method for Producing Positive Charging Toner Public/Granted day:2009-10-01
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