Invention Grant
- Patent Title: Method for producing toner for developing electrostatic charge image, and toner for developing electrostatic charge image
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Application No.: US17465996Application Date: 2021-09-03
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Publication No.: US12078959B2Publication Date: 2024-09-03
- Inventor: Daisuke Tomita , Hiroshi Nakazawa , Yuji Isshiki
- Applicant: FUJIFILM Business Innovation Corp.
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee: FUJIFILM Business Innovation Corp.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP 21049120 2021.03.23
- Main IPC: G03G9/08
- IPC: G03G9/08

Abstract:
A method for producing a toner for developing an electrostatic charge image includes aggregating at least resin particles and releasing agent particles contained in a dispersion to form aggregated particles; heating and fusing the aggregated particles to prepare a dispersion containing fused particles; and cooling the dispersion containing the fused particles to a temperature equal to or lower than a temperature 30° C. lower than an endothermic peak onset temperature derived from a releasing agent that constitutes the releasing agent particles, in which, in the cooling, the dispersion is cooled at a rate of 30° C./min or more and 130° C./min or less.
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