Invention Grant
- Patent Title: Toner production method
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Application No.: US16967324Application Date: 2019-02-08
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Publication No.: US11841678B2Publication Date: 2023-12-12
- Inventor: Shoichi Murata , Manabu Suzuki , Yuki Wakabayashi
- Applicant: KAO CORPORATION
- Applicant Address: JP Tokyo
- Assignee: KAO CORPORATION
- Current Assignee: KAO CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 18021174 2018.02.08 JP 18036346 2018.03.01
- International Application: PCT/JP2019/004696 2019.02.08
- International Announcement: WO2019/156232A 2019.08.15
- Date entered country: 2020-08-04
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/087 ; G03G9/09 ; G03G15/08

Abstract:
A method for producing a toner, including aggregating and coalescing resin particles and colorant particles in an aqueous medium. The resin particles contain, in the same or different particles, an amorphous polyester-based resin which is a polycondensate of an alcohol component containing an aromatic alcohol and a carboxylic acid component, and a crystalline polyester resin. The colorant particles contain a colorant and an addition polymer of a raw material monomer containing an addition-polymerizing monomer having an aromatic group. A ratio by mass of the colorant to the addition polymer in the colorant particles is 50/50 or more and 95/5 or less.
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