公开(公告)号：EP3104226A4

公开(公告)日：2017-09-06

申请号：EP15746678

申请日：2015-02-04

申请人： SAKATA INX CORP

发明人： OKAMOTO KATSUTOSHI ,  MAEDA HIROHITO ,  INOUE TOMOAKI ,  KAWABATA JUN

IPC分类号： G03G9/12 ,  G03G9/13 ,  G03G9/135

CPC分类号： G03G9/122 ,  G03G9/131 ,  G03G9/132 ,  G03G9/1355

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.

摘要翻译： 本发明的一个目的是提供一种用于电子照相或静电记录的液体显影剂，其显示出良好的颗粒均匀性，保存稳定性，定影性和电泳迁移性。 为了实现上述目的，本发明提供了一种液体显影剂，其包含通过利用凝聚方法造粒的着色树脂颗粒，至少来自作为颜料的酸性炭黑，包含含酸基团树脂的粘合剂树脂，含碱性基团的颜料分散体 作为酸性颜料衍生物的颜料分散助剂，相对于颜料100质量份，含有0.1〜10.0质量份的颜料分散助剂和造粒助剂，通过粒子分散液将着色树脂粒子分散在绝缘溶剂中 剂。