发明公开
- 专利标题: LIQUID DEVELOPER
- 专利标题(中): 液体显影剂
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申请号: EP15746678.0申请日: 2015-02-04
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公开(公告)号: EP3104226A1公开(公告)日: 2016-12-14
- 发明人: OKAMOTO Katsutoshi , MAEDA Hirohito , INOUE Tomoaki , KAWABATA Jun
- 申请人: Sakata INX Corp.
- 申请人地址: 23-37, Edobori 1-chome Nishi-ku Osaka-shi, Osaka 550-0002 JP
- 专利权人: Sakata INX Corp.
- 当前专利权人: Sakata INX Corp.
- 当前专利权人地址: 23-37, Edobori 1-chome Nishi-ku Osaka-shi, Osaka 550-0002 JP
- 代理机构: Grünecker Patent- und Rechtsanwälte PartG mbB
- 优先权: JP2014019838 20140204
- 国际公布: WO2015119147 20150813
- 主分类号: G03G9/12
- IPC分类号: G03G9/12 ; G03G9/13
摘要:
An object of the present invention is to provide a liquid developer for electrophotography or electrostatic recording, demonstrating good particle uniformity, preservation stability, fixing property, and electrophoretic migration property. To achieve the aforementioned object, the present invention provides a liquid developer that contains colored resin particles granulated by utilizing the coacervation method, from at least an acid carbon black as pigment, binder resin containing acid group-containing resin, basic group-containing pigment dispersion agent, pigment dispersion aid which is an acid pigment derivative and accounts for 0.1 to 10.0 parts by mass per 100 parts by mass of the pigment, and granulating aid, wherein the colored resin particles are dispersed in an insulating solvent by means of a particle dispersion agent.
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