Invention Grant
- Patent Title: Method for producing toner
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Application No.: US15576240Application Date: 2016-05-23
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Publication No.: US10216106B2Publication Date: 2019-02-26
- Inventor: Tomoyo Miyakai , Junichi Tamura , Hayato Ida , Takaho Shibata , Kouichirou Ochi , Yuya Chimoto , Ryuji Murayama , Daisuke Yamashita , Akemi Watanabe , Takashi Hirasa
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A.Inc., IP Division
- Priority: JP2015-107872 20150527; JP2016-088542 20160426
- International Application: PCT/JP2016/002496 WO 20160523
- International Announcement: WO2016/189851 WO 20161201
- Main IPC: G03G9/087
- IPC: G03G9/087 ; G03G9/08

Abstract:
A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.
Public/Granted literature
- US20180143547A1 METHOD FOR PRODUCING TONER Public/Granted day:2018-05-24
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