公开(公告)号：US06187495B1

公开(公告)日：2001-02-13

申请号：US09386217

申请日：1999-08-31

申请人： Tatsuhiko Chiba ,  Kazuo Yoshinaga ,  Satoshi Yasuda ,  Hiroaki Kawakami ,  Ryoichi Fujita ,  Shinya Yachi ,  Koichi Tomiyama

发明人： Tatsuhiko Chiba ,  Kazuo Yoshinaga ,  Satoshi Yasuda ,  Hiroaki Kawakami ,  Ryoichi Fujita ,  Shinya Yachi ,  Koichi Tomiyama

IPC分类号： G03G909

CPC分类号： G03G9/0806 ,  G03G9/091 ,  G03G9/0912

摘要： A yellow toner suitable for electrophotography is formed by dispersing a yellow colorant mixture in a binder resin. The yellow colorant mixture is formed of at least a pigment of formula (1) or (2) below, and a dye of formula (3) below: wherein R1 and R2 independently denote a hydrogen atom, a chlorine atom or —CH3, and R3 denotes wherein R1, R2, R3 and R4 independently denote a hydrogen atom, —COOH, —COOCH3, —CF3, —CONH(C6H4)CONH2, or

摘要翻译： 通过将黄色着色剂混合物分散在粘合剂树脂中，形成适用于电子照相的黄色调色剂。 黄色着色剂混合物由至少下述式（1）或（2）的颜料和下式（3）的染料形成：其中R1和R2独立地表示氢原子，氯原子或-CH3，以及 R3表示其中R1，R2，R3和R4独立地表示氢原子，-COOH，-COOCH3，-CF3，-CONH（C6H4）CONH2，或

公开(公告)号：US4939060A

公开(公告)日：1990-07-03

申请号：US420732

申请日：1989-10-12

申请人： Koichi Tomiyama ,  Seiichi Takagi ,  Ichiro Ohsaki ,  Satoshi Yasuda ,  Yoshihiko Hyosu

发明人： Koichi Tomiyama ,  Seiichi Takagi ,  Ichiro Ohsaki ,  Satoshi Yasuda ,  Yoshihiko Hyosu

IPC分类号： G03G9/083 ,  G03G9/087

CPC分类号： G03G9/0836 ,  G03G9/0837 ,  G03G9/087 ,  G03G9/08793 ,  G03G9/08795 ,  Y10S430/104 ,  Y10S524/901 ,  Y10S524/904 ,  Y10S525/934 ,  Y10S526/934

摘要： A magnetic toner for developing electrostatic images, comprising at least a binder resin and a magnetic powder; the binder resin having 10 to 70 wt. % of a THF (tetrahydrofuran)-insoluble and a THF-soluble, the THF-soluble providing a molecular weight distribution in the chromatogram of GPC (gel permeation chromatography) thereof such that it provides a rate (Mw/Mn) of weight-average molecular weight (Mw)/number-average molecular weight (Mn).gtoreq.5, there are a peak in the molecular weight range of 2,000 to 10,000 and a peak or shoulder in the molecular weight range of 15,000 to 100,000 and a component having a molecular weight of 10,000 or smaller is contained in an amount of 10-50 wt. % based on the binder resin; the magnetic powder comprising spherical magnetic particles having a bulk density of 0.6 g/ml or larger.

公开(公告)号：US6090515A

公开(公告)日：2000-07-18

申请号：US862353

申请日：1997-05-23

申请人： Koichi Tomiyama ,  Takaaki Kohtaki ,  Manabu Ohno ,  Makoto Unno ,  Yushi Mikuriya ,  Nobuyuki Okubo ,  Tadashi Doujo ,  Shunji Suzuki

发明人： Koichi Tomiyama ,  Takaaki Kohtaki ,  Manabu Ohno ,  Makoto Unno ,  Yushi Mikuriya ,  Nobuyuki Okubo ,  Tadashi Doujo ,  Shunji Suzuki

IPC分类号： G03G9/097

CPC分类号： G03G9/0819 ,  G03G15/08 ,  G03G9/0975 ,  G03G9/09783

摘要： A toner for developing electrostatic images includes a binder resin, a specific long-chain alkyl compound and a specific azo iron complex. The long-chain alkyl compound contains a terminal --OH or --COOH group and from about 35 to 150 (--CH.sub.2 --) groups. The azo iron complex has a cation including 75-98 mol. % of ammonium ion and another ion which is hydrogen, sodium, potassium or mixtures thereof.

摘要翻译： 用于显影静电图像的调色剂包括粘合剂树脂，特定的长链烷基化合物和特定的偶氮铁络合物。 长链烷基化合物包含末端-OH或-COOH基团和约35至150（-CH 2 - ）基团。 偶氮铁络合物具有75-98摩尔的阳离子。 ％的铵离子和另一种离子是氢，钠，钾或其混合物。

公开(公告)号：US5976752A

公开(公告)日：1999-11-02

申请号：US135167

申请日：1998-08-18

申请人： Satoshi Matsunaga ,  Koichi Tomiyama ,  Yuichi Mizoh ,  Keita Nozawa ,  Minekazu Endo ,  Tadashi Doujo ,  Yoshihiro Ogawa ,  Nene Shibayama

发明人： Satoshi Matsunaga ,  Koichi Tomiyama ,  Yuichi Mizoh ,  Keita Nozawa ,  Minekazu Endo ,  Tadashi Doujo ,  Yoshihiro Ogawa ,  Nene Shibayama

IPC分类号： G03G9/087 ,  G03G9/097 ,  G03G13/22

CPC分类号： G03G9/08755 ,  G03G9/087 ,  G03G9/08702 ,  G03G9/08711 ,  G03G9/08728 ,  G03G9/08797

摘要： An electrophotographic toner is composed of at least a binder resin, a colorant, and a wax. The binder resin (a) comprises a polyester resin, a vinyl resin and a hybrid resin component comprising a polyester unit and a vinyl polymer unit, (b) has a THF (tetrahydrofuran)-soluble content (W1) of 50-85 wt. % and a THF-insoluble content (W2) of 5-50 wt. %, an ethyl acetate-soluble content (W3) of 40-98 wt. % and an ethyl acetate-insoluble content (W4) of 2-60 wt. %, a chloroform-soluble content (W5) of 55-90 wt. % and a chloroform-insoluble content (W6) of 10-45 wt. %, respectively after 10 hours of Soxhlet extraction with respective solvents, giving a ratio W4/S6 of 1.1-4.0, and contains a THF-soluble content providing a GPC (gel permeation chromatography) chromatogram exhibiting a main peak in a molecular weight range of 4000-9000, including 35.0-65.0% (A1) of a component haing molecular weights in a range of 500 to below 1.times.10.sup.4, 25.0-45.0% (A2) of a component having molecular weights in a range of 1.times.10.sup.4 to below 1.times.10.sup.5 and 10.0-30.0% (A3) of a component having molecular weights of at least 1.times.10.sup.5 giving a ratio A1/A2 of 1.05-2.00. The binder resin shows good dispersibility of wax and colorant.

摘要翻译： 电子照相调色剂由至少粘合剂树脂，着色剂和蜡组成。 粘合剂树脂（a）包括聚酯树脂，乙烯基树脂和包含聚酯单元和乙烯基聚合物单元的混合树脂组分，（b）具有50-85重量％的THF（四氢呋喃） - 可溶成分（W1） ％和THF不溶物含量（W2）为5-50wt。 ％，40-98重量％的乙酸乙酯可溶物含量（W3） ％，乙酸乙酯不溶物含量（W4）为2-60wt。 ％，55-90重量％的氯仿可溶物含量（W5） ％，氯仿不溶物含量（W6）为10-45wt。 ％，分别用各自的溶剂提取索氏提取10小时后，得到比例W4 / S6为1.1-4.0，并含有THF可溶性成分，提供在分子量范围内显示主峰的GPC（凝胶渗透色谱）色谱图 4000-9000，包括分子量在500至低于1×10 4范围内的分子量为35.0-65.0％（A1），分子量为1×104至低于1×10 5的组分的25.0-45.0％（A2）和10.0 -30.0％（A3）的分子量为至少1×10 5的组分，其A1 / A2比为1.05-2.00。 粘合剂树脂表现出良好的蜡和着色剂的分散性。

公开(公告)号：US5262267A

公开(公告)日：1993-11-16

申请号：US848659

申请日：1992-03-09

申请人： Tsuyoshi Takiguchi ,  Tetsuya Kuribayashi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

发明人： Tsuyoshi Takiguchi ,  Tetsuya Kuribayashi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/097 ,  G03G13/09 ,  G03G13/06

CPC分类号： G03G13/09 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/097

摘要： A magnetic developer for developing an electrostatic latent image, including hydrophobic silica fine powder and an insulating magnetic toner comprising at least a binder resin and a magnetic material comprising spherical magnetic particles; wherein 0.16 to 1.6 wt. parts of the hydrophobic silica fine powder is mixed with 100 wt. parts of the insulating magnetic toner; the developer contains 17-60% by number of magnetic toner particles having a particle size of 5 microns or smaller, 5-50% by number of magnetic toner particles having a particle size of 6.35-10.08 microns, and 2.0% by volume or less of magnetic toner particles having a particle size of 12.7 microns or larger.

摘要翻译： 一种用于显影静电潜像的磁性显影剂，包括疏水性二氧化硅细粉末和至少包含粘合剂树脂和包含球形磁性颗粒的磁性材料的绝缘磁性调色剂; 其中0.16至1.6wt。 将疏水性二氧化硅细粉末的一部分与100重量％ 部分绝缘磁性调色剂; 显影剂含有17-60个数量的粒径为5微米或更小的磁性调色剂颗粒，5-50个数量的粒径为6.35-10.08微米的磁性调色剂颗粒和2.0体积％以下的 的粒径为12.7微米或更大的磁性调色剂颗粒。

公开(公告)号：US6002895A

公开(公告)日：1999-12-14

申请号：US892913

申请日：1997-07-15

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G21/16

CPC分类号： G03G9/0834 ,  G03G9/08795

摘要： A toner is comprised of a composition containing at least a polymer component and a charge control agent. The polymer component contains substantially no tetrahydrofuran (THF)-insoluble matter. The polymer component THF-soluble has a major peak and a minor peak in the specific molecular weight regions in gel permeation chromatography (GPC). The low molecular weight component and high molecular weight component of the polymer component, each of which shows the specific molecular weight region in GPC, have the specific acid values, respectively. The difference between the acid values is in the specific range.

摘要翻译： 调色剂由至少含有聚合物组分和电荷控制剂的组合物组成。 聚合物组分基本上不含四氢呋喃（THF） - 不溶物质。 在凝胶渗透色谱（GPC）中，可溶于THF的聚合物组分在特定分子量区域具有主峰和次峰。 聚合物组分的低分子量组分和高分子量组分分别具有特定的酸值，分别表示GPC中的特定分子量区域。 酸值之间的差异在特定范围内。

公开(公告)号：US5663026A

公开(公告)日：1997-09-02

申请号：US619873

申请日：1996-03-20

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/09 ,  G03G9/097 ,  G03G15/09

CPC分类号： G03G9/09775 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/091 ,  G03G9/09783

摘要： A magnetic toner is formed from a binder resin and silicon-containing magnetic iron oxide particles. The magnetic toner has a weight-average particle size of at most 13.5 .mu.m, and the magnetic toner has a particle size distribution such that magnetic toner particles having a particle size of at least 12.7 .mu.m are contained in an amount of at most 50 wt. %. The magnetic iron oxide particles have a silicon content of 0.4-2.0 wt. % based on iron, and the magnetic iron oxide particles have an Fe/Si atomic ratio of 1.2-4.0 at the utmost surfaces thereof. Because of the use of such magnetic iron oxide particles having a specifically controlled overall and surface Si contents, the magnetic toner can show stable performances even after standing in a high humidity environment.

摘要翻译： 磁性调色剂由粘合剂树脂和含硅磁性氧化铁颗粒形成。 磁性调色剂具有至多13.5μm的重均粒径，并且磁性调色剂具有使得粒径至少为12.7μm的磁性调色剂颗粒的含量至多为50 重量 ％。 磁性氧化铁颗粒的硅含量为0.4-2.0重量％。 以铁为基准，磁性氧化铁粒子的最表面的Fe / Si原子比为1.2〜4.0。 由于使用具有特定控制的整体和表面Si含量的这种磁性氧化铁颗粒，因此即使在高湿度环境中放置之后，磁性调色剂也能显示出稳定的性能。

公开(公告)号：US5307122A

公开(公告)日：1994-04-26

申请号：US558097

申请日：1990-07-26

申请人： Manabu Ohno ,  Hisayuki Ochi ,  Tetsuhito Kuwashima ,  Hiroyuki Suematsu ,  Eiichi Imai ,  Tsuyoshi Takiguchi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa

发明人： Manabu Ohno ,  Hisayuki Ochi ,  Tetsuhito Kuwashima ,  Hiroyuki Suematsu ,  Eiichi Imai ,  Tsuyoshi Takiguchi ,  Koichi Tomiyama ,  Tsutomu Kukimoto ,  Hiroshi Yusa

IPC分类号： G03G15/02 ,  G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/097 ,  G03G13/02 ,  G03G13/09 ,  G03G15/08 ,  H04N1/29

CPC分类号： G03G9/0819 ,  G03G13/025 ,  G03G13/09 ,  G03G9/0821 ,  G03G9/0836 ,  G03G9/08726 ,  G03G9/08733 ,  G03G9/08791 ,  G03G9/09716 ,  G03G2215/021 ,  G03G2221/183 ,  G03G9/08795

摘要： An image forming apparatus includes a member to be charged for carrying an electrostatic image, a contact-charging means for charging the member to be charged in contact with the member to be charged, and a developing means for developing the electrostatic image carried on the member to be charged. The developing means includes a developer for developing the electrostatic image comprising a toner and hydrophobic inorganic fine powder. The hydrophobic inorganic fine powder not only improves the fluidity of the developer and adjusts the chargeability of the developer but also prevents difficulties due to interaction between the member to be charged and the contact charging means in the presence of residual developer, such as damages of the member to be charged and toner-sticking onto the member to be charged.

摘要翻译： 图像形成装置包括被充电以承载静电图像的构件;接触充电装置，用于对被充电构件进行充电;与显影装置，用于使被构件上承载的静电图像显影; 待充电。 显影装置包括用于使包含调色剂和疏水性无机细粉末的静电图像显影的显影剂。 疏水性无机细粉不仅提高显影剂的流动性，而且可以调节显影剂的带电性，而且还可以防止在残留显影剂存在下被充电元件与接触充电装置之间的相互作用造成的困难，例如 要充电的部件和墨粉粘在要充电的部件上。

公开(公告)号：US5210617A

公开(公告)日：1993-05-11

申请号：US894579

申请日：1992-06-05

申请人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

发明人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/0827 ,  G03G9/0823 ,  G03G9/097

摘要： A developer for developing electrostatic latent images is constituted by a toner, and negatively chargeable spherical resin particles having an average particle size of 0.03-1.0 micron and a volume resistivity of 10.sup.6 -10.sup.12 ohm.cm. The toner may comprise toner particles and hydrophobic inorganic fine powder, which is generally used in a larger amount than the negatively chargeable spherical resin particles. The negatively chargeable spherical resin particles function to provide a toner image which is faithful to an electrostatic latent image formed on a photosensitive member while preventing toner-sticking onto the photosensitive member preferably in combination with a contact-charging means for charging the photosensitive member.

摘要翻译： 用于显影静电潜像的显影剂由调色剂和平均粒度为0.03-1.0微米，体积电阻率为106-1012欧姆·厘米的带负电荷的球形树脂颗粒构成。 调色剂可以包含调色剂颗粒和疏水性无机细粉末，其通常以比带负电荷的球形树脂颗粒更大的量使用。 带负电荷的球形树脂颗粒的作用是提供一种调色剂图像，其忠实于形成在感光构件上的静电潜像，同时防止调色剂粘附到感光构件上，优选与用于对感光构件充电的接触充电装置组合。

公开(公告)号：US5139914A

公开(公告)日：1992-08-18

申请号：US557757

申请日：1990-07-26

申请人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

发明人： Koichi Tomiyama ,  Tsuyoshi Takiguchi ,  Tsutomu Kukimoto ,  Hiroshi Yusa ,  Eiichi Imai

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/097 ,  G03G9/0823 ,  G03G9/0827

摘要： A developer for developing electrostatic latent images is constituted by a toner, and negatively chargeable spherical resin particles having an average particle size of 0.03-1.0 micron and a volume resistivity of 10.sup.6 -10.sup.12 ohm.cm. The toner may comprise toner particles and hydrophobic inorganic fine powder, which is generally used in a larger amount than the negatively charageable spherical resin particles. The negatively chargeable spherical resin particles function to provide a toner image which is faithful to an electrostatic latent image formed on a photosensitive member while preventing toner-sticking onto the photosensitive member preferably in combination with a contact-charging means for charging the photosensitive member.