• Patent Title: Method for manufacturing toner for electrostatic charge image development
  • Application No.: US17418941
    Application Date: 2019-12-26
  • Publication No.: US12061440B2
    Publication Date: 2024-08-13
  • Inventor: Kojiro AkazakiTakeru ChibaTakashi Iga
  • Applicant: ZEON CORPORATION
  • Applicant Address: JP Tokyo
  • Assignee: ZEON CORPORATION
  • Current Assignee: ZEON CORPORATION
  • Current Assignee Address: JP Tokyo
  • Agency: WHDA, LLP
  • Priority: JP 18248280 2018.12.28 JP 18248296 2018.12.28
  • International Application: PCT/JP2019/051306 2019.12.26
  • International Announcement: WO2020/138369A 2020.07.02
  • Date entered country: 2021-06-28
  • Main IPC: G03G9/087
  • IPC: G03G9/087 G03G9/08
Method for manufacturing toner for electrostatic charge image development
Abstract:
The present invention provides a method for producing a toner for electrostatic-image development comprising: a dispersing step of performing a dispersing treatment in which a cavitation effect is obtained on a color resin particle containing a binder resin, a colorant, a charge control agent, and a release agent in an aqueous dispersion medium so as to obtain a dispersion of the color resin particle; and a heating step of performing a heat treatment on the dispersion of the color resin particle at a temperature of equal to or more than a glass transition temperature of the color resin particle and 95° C. or less for a heating time of 5 minutes or more and 10 hours or less.
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