公开(公告)号：US06303257B1

公开(公告)日：2001-10-16

申请号：US09579138

申请日：2000-05-30

申请人： Kumi Hasegawa ,  Yasuaki Iwamoto ,  Masahide Yamashita

发明人： Kumi Hasegawa ,  Yasuaki Iwamoto ,  Masahide Yamashita

IPC分类号： G03G9087

CPC分类号： G03G9/08755 ,  G03G9/08711 ,  G03G9/08795 ,  G03G9/08797

摘要： An electrophotographic toner comprising a binder resin, colorant, and an external additive, wherein the binder resin is soluble in tetrahydrofuran and includes at least a first resin component and a second resin component, wherein the first resin component has a molecular weight distribution such that a peak is present in a molecular weight range of from 1,000 to 10,000, and the second resin component has a molecular weight distribution such that a peak is present in a molecular weight range of from 100,000 to 10,000,000, wherein the peak of the first resin component is the largest, and the second resin component is present in the binder resin in an amount of from 10 to 30% by weight, and wherein the second resin component has a dynamic modulus G′ of from 100,000 to 50,000,000 dyne/cm2 when the dynamic modulus is measured by a frequency sweep method under conditions of 150° C. in temperature and 0.01 to 100 rad/sec in frequency.

摘要翻译： 一种包含粘合剂树脂，着色剂和外部添加剂的电子照相调色剂，其中所述粘合剂树脂可溶于四氢呋喃并包括至少第一树脂组分和第二树脂组分，其中所述第一树脂组分具有分子量分布，使得 峰存在于1,000至10,000的分子量范围内，并且第二树脂组分具有分子量分布，使得峰的分子量范围为100,000至10,000,000，其中第一树脂组分的峰为 最大，第二树脂成分以10〜30重量％的量存在于粘合剂树脂中，并且其中第二树脂成分的动态弹性模量G'为100,000〜50,000,000dyne / cm 2，动态模量 通过频率扫描法在150℃的温度和0.01至100弧度/秒的频率条件下测量。

公开(公告)号：US06183926B2

公开(公告)日：2001-02-06

申请号：US09425985

申请日：1999-10-25

申请人： Noboru Kuroda ,  Yasushi Nakamura ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kohki Katoh ,  Tomio Kondou ,  Kenichi Uehara ,  Yoshihiro Sugiyama ,  Yasuyuki Sanui

发明人： Noboru Kuroda ,  Yasushi Nakamura ,  Ryoichi Ito ,  Yasuaki Iwamoto ,  Kohki Katoh ,  Tomio Kondou ,  Kenichi Uehara ,  Yoshihiro Sugiyama ,  Yasuyuki Sanui

IPC分类号： G03G9083

CPC分类号： G03G9/0819

摘要： A toner is made or toner particles which contains a binder resin and a coloring agent, wherein the toner particles have a weight-average particle size in a range of 6.0 to 11.5 &mgr;m, and contains toner particles (a) with a particle diameter of 5 &mgr;m or less in a content ratio of 1 to 15% by number, and toner particles (b) with a particle diameter of twice or more the weight-average particle size in a content ratio of 5 wt % or less, and the number-average particle size D25 and the number-average particle size D75 respectively obtained when the cumulative number of the toner particles reaches 25% and 75% at the measurement of a cumulative toner particle distribution by number thereof are in the relationship of 0.60≦D25/D75≦0.95. A two-component developer includes the above-mentioned toner and a carrier.

摘要翻译： 制造调色剂或含有粘合剂树脂和着色剂的调色剂颗粒，其中调色剂颗粒的重均粒径在6.0至11.5μm的范围内，并且包含粒径为5的调色剂颗粒（a） 以及含量比例为1〜15％的调色剂颗粒（b），以及重均粒径的2倍以上的调色剂颗粒（b）的含量比例为5重量％以下， 当累计调色剂颗粒分布的数量在调色剂颗粒的累积数达到25％和75％时分别获得的平均粒径D25和数均粒径D75的关系为0.60 <= D25 / D75 <= 0.95。 双组分显影剂包括上述调色剂和载体。

公开(公告)号：US4980258A

公开(公告)日：1990-12-25

申请号：US436551

申请日：1989-11-14

申请人： Mitsuo Aoki ,  Nobuhiro Nakayama ,  Yasuo Asahina ,  Hiroyuki Fushimi ,  Kayo Makita ,  Yasuaki Iwamoto

发明人： Mitsuo Aoki ,  Nobuhiro Nakayama ,  Yasuo Asahina ,  Hiroyuki Fushimi ,  Kayo Makita ,  Yasuaki Iwamoto

IPC分类号： G03G9/09 ,  G03G9/097

CPC分类号： G03G9/0975 ,  G03G9/0918 ,  G03G9/09741

摘要： The present invention relates to the positively chargeable black toner particles which comprise binder resins, carbonblack as a main colorant, quaternary anmonium salt of the following formula (I) as a charge control agent and .beta.-form Cu-phthalocyanine as a stabilizing agent for chargeability of toner particles without being affected by the change of environmental conditions. ##STR1## Wherein R.sub.1 is C.sub.1 -C.sub.8 alkyl or benzyl, R.sub.2 and R.sub.3 are each C.sub.1 -C.sub.18 alkyl, R is C.sub.1 -C.sub.118 alkyl or benzyl, X is hydroxy or amino, and Y is hydoroxy or hydrogen; (c) .beta.-form Cu-phthalocyanine; and (d) carbonblack.The present invention further relates to the two component dry-type developer composed by the improved above said positively chargeable toner particles and the carrier particles coated with silicone polylmers which have the strong durability without being changed to a supent carrier particles for a use of long time period.

摘要翻译： 本发明涉及包含粘合剂树脂，炭黑作为主要着色剂的正电荷黑色调色剂颗粒，作为电荷控制剂的下式（I）的季铵盐和作为带电性的稳定剂的β-型Cu-酞菁 的调色剂颗粒，而不受环境条件的变化的影响。 （I）其中R1是C1-C8烷基或苄基，R2和R3各自是C1-C18烷基，R是C1-C118烷基或苄基，X是羟基或氨基，Y是羟基或氢; （c）β-型Cu-酞菁; 和（d）炭黑。 本发明还涉及由改进的上述可充正电的调色剂颗粒和涂覆有硅氧烷聚合物的载体颗粒组成的双组分干式显影剂，其具有强的耐久性而不会改变为长时间使用的载体颗粒 期。

公开(公告)号：US4841331A

公开(公告)日：1989-06-20

申请号：US163694

申请日：1988-03-03

申请人： Nobuhiro Nakayama ,  Yasuo Asahina ,  Hiroyuki Fushimi ,  Yasuaki Iwamoto

发明人： Nobuhiro Nakayama ,  Yasuo Asahina ,  Hiroyuki Fushimi ,  Yasuaki Iwamoto

IPC分类号： G03G9/113 ,  G03G15/08

CPC分类号： G03G9/1134 ,  G03G15/0812 ,  G03G15/0818 ,  G03G9/1136

摘要： A triboelectric charge application member for imparting or applying electrostatic charge to a toner through the triboelectric charging thereof for developing electrostatic images with the charged toner to visible toner images. The triboelectric charge application member includes an overcoat layer comprising as the main component a polymer which comprises a fluoro-olefin compound and an unsaturated silicon compound as the monomer units of the polymer. The triboelectric charge application member may be carrier particles having the above overcoat layer and a toner transportation member having the overcoat layer, depending upon its application.

摘要翻译： 一种摩擦电荷施加构件，用于通过其摩擦带电赋予调色剂静电荷，并将带电调色剂的静电图像显影成可见的调色剂图像。 摩擦带电施加构件包括外涂层，其包含作为主要组分的聚合物，其包含氟代烯烃化合物和不饱和硅化合物作为聚合物的单体单元。 根据其应用，摩擦电荷施加构件可以是具有上述外涂层的载体颗粒和具有外涂层的调色剂输送构件。