Invention Grant
- Patent Title: Method for producing liquid developer
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Application No.: US16468103Application Date: 2017-11-02
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Publication No.: US10649357B2Publication Date: 2020-05-12
- Inventor: Yuri Nannichi , Nobumichi Kamiyoshi
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@44976ccc
- International Application: PCT/JP2017/039751 WO 20171102
- International Announcement: WO2018/116658 WO 20180628
- Main IPC: G03G9/00
- IPC: G03G9/00 ; G03G9/13 ; G03G9/125 ; G03G15/10

Abstract:
A method for producing a liquid developer containing a resin binder containing a resin having an acidic group, a colorant, a basic dispersant, and an insulating liquid, including: step I: stirring raw materials containing the resin binder, the colorant, and the basic dispersant at a temperature of equal to or higher than a glass transition temperature of the resin binder; and step II: adding dropwise from 50 to 500 parts by mass of the insulating liquid to a stirred mixture of the step I, based on 100 parts by mass of the stirred mixture at a temperature of equal to or higher than a glass transition temperature of the resin binder, thereby carrying out a phase inversion emulsification, to provide a dispersion of toner particles. The liquid developer obtainable by the method of the present invention is suitably used in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.
Public/Granted literature
- US20200064752A1 METHOD FOR PRODUCING LIQUID DEVELOPER Public/Granted day:2020-02-27
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