公开(公告)号：US5362592A

公开(公告)日：1994-11-08

申请号：US974753

申请日：1992-11-13

申请人： Katsumi Murofushi ,  Yoshikazu Hosoda ,  Toshio Kaji ,  Yuki Abe ,  Kiyotaka Yamaguchi ,  Takayuki Yoshida ,  Jiro Yamashiro ,  Toshio Arai ,  Takayuki Nagase ,  Harushi Nagami

发明人： Katsumi Murofushi ,  Yoshikazu Hosoda ,  Toshio Kaji ,  Yuki Abe ,  Kiyotaka Yamaguchi ,  Takayuki Yoshida ,  Jiro Yamashiro ,  Toshio Arai ,  Takayuki Nagase ,  Harushi Nagami

IPC分类号： G03G9/09 ,  G03G9/097

CPC分类号： G03G9/09725 ,  G03G9/0926 ,  G03G9/09708 ,  G03G9/09733 ,  G03G9/09741 ,  G03G9/0975 ,  G03G9/09791

摘要： A decolorizable toner including a resin binder, a near infrared ray-absorbing dye, a decolorizing agent and a light fastness stabilizer, and a process for preparing the decolorizable toner, which includes the steps of mixing the near infrared ray-absorbing dye and the light fastness stabilizer with the resin binder, and then mixing the decolorizing agent therewith. The decolorizable toner has excellent light stability during its production or storage and excellent decolorizing property.

摘要翻译： 一种可脱色的调色剂，包括树脂粘合剂，近红外线吸收染料，脱色剂和耐光性稳定剂，以及制备可脱色调色剂的方法，其包括将近红外线吸收染料和光 坚牢剂与树脂粘合剂，然后将脱色剂混合。 可脱色的调色剂在其生产或储存期间具有优异的光稳定性和优异的脱色性能。

公开(公告)号：US5328795A

公开(公告)日：1994-07-12

申请号：US501136

申请日：1990-03-29

申请人： Jiro Yamashiro ,  Harushi Nagami ,  Takashi Miki ,  Mitsuhiro Uchino

发明人： Jiro Yamashiro ,  Harushi Nagami ,  Takashi Miki ,  Mitsuhiro Uchino

IPC分类号： G03G9/08

CPC分类号： G03G9/0819 ,  G03G9/0806 ,  G03G9/0815 ,  G03G9/0827

摘要： There is disclosed a method of producing a toner particles for use in electrophotography which comprises: suspending a radical polymerizable monomer which contains a colorant and a charge controlling agent therein in an aqueous phase; suspension polymerizing the monomer to provide spherical polymer particles of 1-30 .mu.m in diameter; treating the suspension containing the polymer particles with a continuous, wet type, agitation mill, to deform the polymer particles.A further method of producing toner particles is disclosed which comprises: producing spherical polymer particles by suspension polymerization of a monomer; making finely divided triboelectric or electroconductive particles or both onto the surface of the polymer particles; and then mechanically pressing the polymer particles to deform the polymer particles as well as to fix the particles on the surface of the polymer particles.A still further method of producing toner particles is disclosed which comprises: producing spherical polymer particles of 20-300 .mu.m in diameter by suspension polymerization of a monomer; and then crushing and classifying the polymer particles into toners of 1-30 .mu.m in size preferably after deforming the polymer particles.

摘要翻译： 公开了一种生产用于电子照相术的调色剂颗粒的方法，包括：将含有着色剂的自由基聚合性单体和电荷控制剂悬浮在水相中; 悬浮聚合单体以提供直径为1-30μm的球形聚合物颗粒; 用连续的湿式搅拌机处理含有聚合物颗粒的悬浮液，使聚合物颗粒变形。 公开了制备调色剂颗粒的另一种方法，其包括：通过单体的悬浮聚合制备球形聚合物颗粒; 将精细分裂的摩擦电或导电颗粒或两者都制成聚合物颗粒的表面; 然后机械压制聚合物颗粒以使聚合物颗粒变形，并将颗粒固定在聚合物颗粒的表面上。 公开了制备调色剂颗粒的另一种方法，其包括：通过单体的悬浮聚合制备直径为20-300μm的球形聚合物颗粒; 然后将聚合物颗粒粉碎并分级成尺寸为1-30μm的调色剂，优选在使聚合物颗粒变形之后。

公开(公告)号：US4904560A

公开(公告)日：1990-02-27

申请号：US212651

申请日：1988-06-28

申请人： Jiro Yamashiro ,  Takashi Miki

发明人： Jiro Yamashiro ,  Takashi Miki

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/08702 ,  G03G9/0806 ,  Y10S430/105

摘要： A process for producing toners for use in electrophotography which comprises: stirring a mixture of a radical polymerizable liquid monomer and carbon black in the presence of a peroxide polymerization initiator, thereby to disperse the carbon black uniformly and minutely in the monomer; adding an azobisnitrile polymerization initiator to the resultant monomer composition; suspension polymerizing the monomer in an aqueous medium; and recovering and drying the resultant spherical polymer particles.In a preferred process, the suspension polymerization is carried out in an aqueous medium which contains polyvinyl alcohol as a suspending agent, and after the polymerization, the polyvinyl alcohol remaining on the polymer particles is saponified or nitrated to produce a toner with a higher quality.