公开(公告)号：US5827632A

公开(公告)日：1998-10-27

申请号：US909877

申请日：1997-08-12

申请人： Kohji Inaba ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Takao Ishiyama

发明人： Kohji Inaba ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Takao Ishiyama

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/0825 ,  G03G9/09716 ,  G03G9/09725

摘要： A toner for developing electrostatic images includes (a) toner particles having a weight-average particle size of 1-9 .mu.m, (b) hydrophobized inorganic fine powder having an average particle size of 10-90 nm and (c) hydrophobized silicon compound fine powder. The hydrophobized silicon compound fine powder has an average particle size of 30-120 nm, and a particle size distribution such that it contains 15-45% by number of particles having sizes of 5-30 nm, 30-70% by number of particles having sizes of 30-60 nm and 5-45% by number of particles having sizes of at least 60 nm. The hydrophobized silicon compound fine powder having a broad particle size distribution including coarse particles functions to prevent the embedding of the hydrophobized inorganic fine powder (functioning as a flowability improver) from being embedded at the toner particle surfaces, whereby the toner is allowed to exhibit stable performances even in a continuous image formation on a large number of sheets.

摘要翻译： 用于显影静电图像的调色剂包括（a）重均粒径为1-9μm的调色剂颗粒，（b）平均粒度为10-90nm的疏水化无机细粉末和（c）疏水化硅化合物 细粉。 疏水化硅化合物细粉末的平均粒径为30〜120nm，粒径分布为15〜45个数量的粒径为5〜30nm，粒径为30〜70体积％ 具有30-60nm的尺寸和5-45个数量的具有至少60nm的尺寸的颗粒。 疏水化硅化合物细粉末，其具有包括粗粒子的宽粒度分布的功能，以防止疏水化无机细粉末（作为流动性改进剂起作用）的嵌入被嵌入调色剂颗粒表面，从而调色剂显示稳定 即使在大量纸张上连续成像也能进行表演。

公开(公告)号：US5510222A

公开(公告)日：1996-04-23

申请号：US243932

申请日：1994-05-17

申请人： Kohji Inaba ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Takao Ishiyama

发明人： Kohji Inaba ,  Tatsuya Nakamura ,  Tatsuhiko Chiba ,  Takao Ishiyama

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/087

CPC分类号： G03G9/09733 ,  G03G9/081

摘要： A toner for developing an electrostatic latent image is constituted by a binder resin, a colorant, and an ester compound (a), (b) or (c) shown below: (a) a poly-functional ester having a tertiary carbon or/and a quaternary carbon and obtained from an alcohol compound or carboxylic compound having at least two functional groups, (b) a mono-functional ester having a tertiary carbon or/and a quaternary carbon, or (c) a poly-functional ester of a specific structure having a primary or secondary carbon having at least two functional groups. The ester compound is characterized by a good affinity with the binder resin, a high hydrophobicity and a low crystallinity, thereby providing a toner which shows good low-temperature fixability, anti-offset characteristic, color-mixing characteristic and transparency.

摘要翻译： 用于显影静电潜像的调色剂由以下所示的粘合剂树脂，着色剂和酯化合物（a），（b）或（c）构成：（a）具有叔碳或/ 和由具有至少两个官能团的醇化合物或羧酸化合物获得的季碳，（b）具有叔碳或/和季碳的单官能酯，或（c）多官能酯， 具有具有至少两个官能团的伯或仲碳的具体结构。 酯化合物的特征在于与粘合剂树脂具有良好的亲和性，高疏水性和低结晶度，从而提供显示出良好的低温定影性，抗偏移特性，颜色混合特性和透明度的调色剂。