公开(公告)号：US5940662A

公开(公告)日：1999-08-17

申请号：US801921

申请日：1997-02-14

申请人： Yoshifumi Hano ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Fumihiro Arahira ,  Yuji Ishihara ,  Kiyoshi Mizoe

发明人： Yoshifumi Hano ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Fumihiro Arahira ,  Yuji Ishihara ,  Kiyoshi Mizoe

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： A charging apparatus which comprises an electrophotographic photosensitive member and a charging member which comprises magnetic particles and placed in contact with the electrophotographic photosensitive member to charge the electrophotographic photosensitive member upon application of a voltage, wherein each magnetic particle has a surface layer containing a polyolefin resin of which weight average molecular weight is 10,000 or more, and has a volume resistivity of 1.times.10.sup.4 to 1.times.10.sup.11 .OMEGA.cm.

摘要翻译： 一种充电装置，其包括电子照相感光构件和充电构件，所述充电构件包括磁性颗粒并与电子摄影感光构件接触以在施加电压时对电子照相感光构件充电，其中每个磁性颗粒具有含有聚烯烃树脂的表面层 其重均分子量为10,000以上，体积电阻率为1×10 14〜1×10 11欧米高。

公开(公告)号：US5422707A

公开(公告)日：1995-06-06

申请号：US304823

申请日：1994-09-13

申请人： Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Tetsuhito Kuwashima

发明人： Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Tetsuhito Kuwashima

IPC分类号： G03G9/087 ,  G03G9/083 ,  G01D15/06 ,  G03G15/06 ,  H04N1/21

CPC分类号： G03G9/08728 ,  G03G9/08711 ,  Y10S430/105

摘要： A toner for developing an electrostatic image, comprises a binder resin and a colorant. The toner has a glass transition temperature (Tg) of 65.degree. C. or lower. The binder resin comprises a styrene-acrylic copolymer formed from at least a styrenic monomer and a mixture of two or more acrylic monomers. The binder resin contains 10% by weight or more of THF insolubles. The amount of the styrenic monomer remaining in the toner is 0.005 part or less by weight based on 100 parts by weight of the binder resin component in the toner (50 ppm), and the amount of the acrylic monomers remaining in said toner is 0.001 part by weight based on 100 parts by weight or less of the binder resin component in the toner (10 ppm). At least one component of the mixture of acrylic monomers has a Q-value of 0.5 to less than 1.0 and the other has a Q-value of 0.3 to less than 0.5.This toner is excellent in the anti-off-set property to a fixing roller surface, good in fixability, giving high image density and little odor.

摘要翻译： 用于显影静电图像的调色剂包括粘合剂树脂和着色剂。 调色剂的玻璃化转变温度（Tg）为65℃以下。 粘合剂树脂包括由至少苯乙烯单体和两种或更多种丙烯酸单体的混合物形成的苯乙烯 - 丙烯酸共聚物。 粘合剂树脂含有10重量％以上的THF不溶物。 调色剂中剩余的苯乙烯类单体的量相对于调色剂中的粘合剂树脂成分100重量份（50ppm）为0.005重量份，残留在所述调色剂中的丙烯酸类单体的量为0.001份 （10ppm）中的100重量份以下的粘合剂树脂成分。 丙烯酸类单体的混合物的至少一种成分的Q值为0.5〜小于1.0，另外Q值为0.3〜小于0.5。 该调色剂在定影辊表面的防脱离性方面优异，定影性良好，图像密度高，气味少。

公开(公告)号：US5288579A

公开(公告)日：1994-02-22

申请号：US801486

申请日：1991-12-02

申请人： Katsuhiko Tanaka ,  Kazuyoshi Hagiwara ,  Tsuyoshi Takiguchi ,  Rika Doi

发明人： Katsuhiko Tanaka ,  Kazuyoshi Hagiwara ,  Tsuyoshi Takiguchi ,  Rika Doi

IPC分类号： G03G9/097 ,  H04N1/29 ,  G03G9/00 ,  G03G9/083 ,  G03G9/107

CPC分类号： G03G9/09775

摘要： A developer for developing electrostatic images is constituted by toner containing a binder resin and a charge controller. The charge controller comprises an arylurea compound which is an arylurea having at least one electron-attracting group or electron-donating group, or a polyarylurea including such an arylurea as a recurring unit. The arylurea compound is substantially colorless and can have stable but different levels of triboelectric chargeability depending on the substituents.

摘要翻译： 用于显影静电图像的显影剂由含有粘合剂树脂和充电控制器的调色剂构成。 电荷控制剂包括芳基脲化合物，其为具有至少一个吸电子基团或给电子基团的芳基脲，或包含作为重复单元的芳基脲的聚芳基脲。 芳基脲化合物基本上是无色的并且根据取代基可以具有稳定但不同的摩擦带电性。