公开(公告)号：US5288578A

公开(公告)日：1994-02-22

申请号：US882023

申请日：1992-05-13

Applicant: Yutaka Sugizaki ,  Susumu Saito ,  Hirotaka Matsuoka ,  Masanori Ichimura ,  Masaru Miura ,  Takashi Imai

Inventor： Yutaka Sugizaki ,  Susumu Saito ,  Hirotaka Matsuoka ,  Masanori Ichimura ,  Masaru Miura ,  Takashi Imai

IPC: G03G9/097 ,  G03G9/113 ,  G03G9/10

CPC classification number: G03G9/1134 ,  G03G9/1131 ,  G03G9/1138

Abstract: A positively chargeable carrier for developing electrostatic charge images having good surface staining resistance and good environmental reliance of charging is disclosed, which comprises a core material having formed thereon an interlayer having a triboelectrification controlling function and having a nitrogen atom content of from 5 ppm to 75 ppm based on the weight of the core material, and a releasable coated layer formed on the interlayer. A two-component developer using the carrier is also disclosed.

Abstract translation: 公开了一种用于显影具有良好的表面耐污染性和良好的充电环境依赖性的静电荷图像的可带正电的载体，其包括在其上形成有具有摩擦带电控制功能并且氮原子含量为5ppm至75的中间层的芯材料 基于芯材的重量的ppm，以及形成在中间层上的可剥离的涂层。 还公开了使用载体的双组分显影剂。

公开(公告)号：US5202210A

公开(公告)日：1993-04-13

申请号：US775834

申请日：1991-10-15

Applicant: Hirotaka Matsuoka ,  Masanori Ichimura ,  Masaru Miura

Inventor： Hirotaka Matsuoka ,  Masanori Ichimura ,  Masaru Miura

IPC: G03G9/113

CPC classification number: G03G9/1133 ,  Y10T428/2998

Abstract: A carrier for magnetic brush developer comprising a core material having coated thereon a coated layer containing a graft copolymer comprising a polymer of a nitrogen-containing vinyl monomer or a phosphorus-containing vinyl monomer having a molecular weight of from 1,000 to 5,500 graft-copolymerized thereto a vinyl monomer.

Abstract translation: 一种用于磁刷显影剂的载体，其包括在其上涂覆有包含含有含氮乙烯基单体或含有乙烯基单体的聚合物的接枝共聚物的涂层的芯材，所述接枝共聚物具有接枝共聚的分子量为1,000至5,500的含磷乙烯基单体 乙烯基单体。

公开(公告)号：US5529871A

公开(公告)日：1996-06-25

申请号：US276488

申请日：1994-07-18

Applicant: Masanori Ichimura ,  Hiroshi Takayama ,  Michio Take ,  Hideyuki Akagi ,  Takashi Imai ,  Satoshi Inoue ,  Yasuo Yamamoto ,  Yutaka Sugizaki ,  Koji Fukushima ,  Masayuki Takei ,  Masaru Miura

Inventor： Masanori Ichimura ,  Hiroshi Takayama ,  Michio Take ,  Hideyuki Akagi ,  Takashi Imai ,  Satoshi Inoue ,  Yasuo Yamamoto ,  Yutaka Sugizaki ,  Koji Fukushima ,  Masayuki Takei ,  Masaru Miura

IPC: G03G9/08 ,  G03G9/09 ,  G03G9/00

CPC classification number: G03G9/0804 ,  G03G9/081 ,  G03G9/09 ,  G03G9/0906

Abstract: A color toner providing a toner image excellent in brightness, clearness and graininess and a process for producing the same are disclosed, wherein a proportion of dispersed pigment particles having a circle-equivalent diameter of 0.3 .mu.m or greater does not exceed 0.1% of the total number of said dispersed pigment particles. The process comprises kneading a water-containing pigment paste and a binder resin at a temperature of 100.degree. C. or higher under pressure in a heat and pressure kneader to remove a water content to obtain a pigment dispersion, melt-kneading the resulting pigment dispersion together with a binder resin, and grinding the mixture.

Abstract translation: 本发明提供一种提供亮度，清晰度和颗粒度优异的调色剂图像的彩色调色剂，其中，当量圆直径为0.3μm以上的分散颜料颗粒的比例不超过0.1μm 所述分散的颜料颗粒的总数。 该方法包括在100℃或更高的温度下在加压和捏合机中捏合含水颜料糊和粘合剂树脂以除去水分，得到颜料分散体，将得到的颜料分散体 与粘合剂树脂一起研磨混合物。

公开(公告)号：US5320925A

公开(公告)日：1994-06-14

申请号：US879287

申请日：1992-05-07

Applicant: Takashi Imai ,  Satoshi Inoue ,  Masanori Ichimura ,  Yutaka Sugizaki ,  Susumu Saito ,  Masaru Miura ,  Michio Take ,  Yasuo Yamamoto ,  Koji Fukushima ,  Manabu Serizawa

Inventor： Takashi Imai ,  Satoshi Inoue ,  Masanori Ichimura ,  Yutaka Sugizaki ,  Susumu Saito ,  Masaru Miura ,  Michio Take ,  Yasuo Yamamoto ,  Koji Fukushima ,  Manabu Serizawa

IPC: G03G9/08 ,  G03G9/097

CPC classification number: G03G9/0819 ,  G03G9/09716

Abstract: An electrophotographic toner composition comprising (A) toner particles with an average particle diameter of 9 .mu.m or less comprising at least a binder resin and a colorant, and (B) an additive, wherein the additive is a fine metal oxide powder surface coated with at least one agent for imparting hydrophobic property selected from the group consisting of the following formulae (1), (2) and (3):R.sub.1 Si(X).sub.3R.sub.1 R.sub.2 Si(X).sub.2R.sub.1 R.sub.2 R.sub.3 Si(X).sub.1wherein R.sub.1 represents a substituted or unsubstituted alkyl group having a molecular weight of 113 or more, R.sub.2 and R.sub.3 each represents hydrogen, an alkyl group or an allyl group, and X represents chlorine, an alkoxy group or an acetoxy group. The toner composition causes no impaction to a carrier and no adhesion of the toner particles to a photoreceptor, and can form stable, sufficient images for a long time.

Abstract translation: 一种电子照相调色剂组合物，其包含（A）平均粒径为9μm或更小的调色剂颗粒至少包含粘合剂树脂和着色剂，和（B）添加剂，其中所述添加剂是涂覆有金属氧化物粉末表面的金属表面 至少一种赋予选自下式（1），（2）和（3）的疏水性的试剂：R1Si（X）3 R1R2Si（X）2 R1R2R3Si（X）1其中R1表示取代或 未取代的分子量为113以上的烷基，R2和R3各自表示氢，烷基或烯丙基，X表示氯，烷氧基或乙酰氧基。 调色剂组合物不会对载体造成冲击，并且不会使调色剂颗粒粘附到感光体上，并且可以长时间形成稳定的足够的图像。

公开(公告)号：US5296324A

公开(公告)日：1994-03-22

申请号：US877733

申请日：1992-05-04

Applicant: Hideyuki Akagi ,  Susumu Saito ,  Masaru Miura ,  Takashi Imai ,  Masayuki Takei ,  Masanori Ichimura ,  Michio Take ,  Satoshi Inoue ,  Yasuo Yamamoto ,  Toshiaki Murofushi ,  Hiroshi Nakazawa ,  Koji Fukushima

Inventor： Hideyuki Akagi ,  Susumu Saito ,  Masaru Miura ,  Takashi Imai ,  Masayuki Takei ,  Masanori Ichimura ,  Michio Take ,  Satoshi Inoue ,  Yasuo Yamamoto ,  Toshiaki Murofushi ,  Hiroshi Nakazawa ,  Koji Fukushima

IPC: G03G9/08

CPC classification number: G03G9/0808 ,  G03G9/0827

Abstract: A toner for developing an electrostatic charge image is disclosed, which is formed by adding and mixing an external additive with toner particles having an average particle size of not larger than 9 .mu.m and comprising at least a colorant and a binder resin, wherein the external additive is fine particles having a particle size of 20 to 80 nm. There is also disclosed a process for preparing the toner which comprises adding external additives to the toner particles and mixing them, wherein the addition and mixing of said external additive are carried out under specific conditions.

Abstract translation: 公开了一种用于显影静电荷图像的调色剂，其通过将外部添加剂与平均粒度不大于9（my）m并且至少包含着色剂和粘合剂树脂的调色剂颗粒相加和混合而形成，其中 外部添加剂是粒径为20〜80nm的细颗粒。 还公开了一种调色剂的制备方法，其包括向调色剂颗粒中加入外部添加剂并进行混合，其中所述外部添加剂的添加和混合在特定条件下进行。

公开(公告)号：US5665511A

公开(公告)日：1997-09-09

申请号：US471729

申请日：1995-06-06

Applicant: Takashi Imai ,  Satoshi Inoue ,  Masanori Ichimura ,  Yutaka Sugizaki ,  Susumu Saito ,  Masaru Miura ,  Michio Take ,  Yasuo Yamamoto ,  Koji Fukushima ,  Manabu Serizawa

Inventor： Takashi Imai ,  Satoshi Inoue ,  Masanori Ichimura ,  Yutaka Sugizaki ,  Susumu Saito ,  Masaru Miura ,  Michio Take ,  Yasuo Yamamoto ,  Koji Fukushima ,  Manabu Serizawa

IPC: C09K3/00 ,  C09K3/16 ,  C09K3/18 ,  G03G9/08 ,  G03G9/097

CPC classification number: G03G9/09708 ,  G03G9/09716 ,  Y10S430/104

Abstract: A surface-treated inorganic fine particle includes an inorganic fine particle, a hydrophobizing agent deposited on the surface of the inorganic fine particle and an amino group-containing coupling agent deposited on the surface of the inorganic fine particle, wherein the hydrophobizing agent and the amino group-containing coupling agent in a ratio of 1/(0.01 to 0.1) by weight are deposited on the surface of the inorganic fine particle by treating the surface of the inorganic fine particle with the hydrophobizing agent and the amino group-containing coupling agent. An electrophotographic developer contains toner particles and the surface-treated inorganic fine particles.

Abstract translation: 表面处理无机细颗粒包括无机细颗粒，沉积在无机细颗粒表面上的疏水化剂和沉积在无机细颗粒表面上的含氨基偶联剂，其中疏水化剂和氨基 通过用疏水化剂和含氨基的偶联剂处理无机细颗粒的表面，将1 /（0.01至0.1）重量比的含基团的偶联剂沉积在无机细颗粒的表面上。 电子照相显影剂含有调色剂颗粒和表面处理的无机细颗粒。

公开(公告)号：US20050074681A1

公开(公告)日：2005-04-07

申请号：US10992796

申请日：2004-11-22

Applicant: Teruhiko Iwase ,  Seki Yamaguchi ,  Yoshifumi Iida ,  Masanori Ichimura ,  Yoko Tomita ,  Yasuyuki Kobayashi

Inventor： Teruhiko Iwase ,  Seki Yamaguchi ,  Yoshifumi Iida ,  Masanori Ichimura ,  Yoko Tomita ,  Yasuyuki Kobayashi

IPC: G09F13/08 ,  G03G15/20

CPC classification number: G09F13/08 ,  B60K37/02 ,  B60K2350/203 ,  Y10T428/24802 ,  Y10T428/24942 ,  Y10T428/31504

Abstract: A display panel includes a transparent image recording sheet having electrophotographically formed thereon at least a background portion, wherein space factor of pinholes per unit area of the background portion is no greater than 1×10−2%. A method of manufacturing the display panel is also disclosed. The background portion has a transparent optical density of 3.0 or greater and an image portion has a transparent optical density of 1.0 or less, and preferably 0.1 to 1. A toner used for electrophotographically forming the background portion and the image portion has a number average molecular weight of 1,000 to 6,000 and a weight average molecular weight of 30,000 to 150,000 as measured by gel permeation chromatography with respect to a portion of the toner dissolved in tetrahydrofuran, and has respective molecular weight distribution peaks in molecular weight ranges of 1000 to 10,000 and 100,000 to 1,500,000.

Abstract translation: 显示面板包括其上至少具有背景部分电子照相形成的透明图像记录片材，其中背景部分的每单位面积的针孔的空间因子不大于1×10 -2％。 还公开了一种制造显示面板的方法。 背景部分具有3.0或更大的透明光密度，并且图像部分的透明光密度为1.0以下，优选为0.1〜1。用于电子照相地形成背景部分和图像部分的调色剂具有数均分子量 重量为1,000〜6000，重均分子量为30,000〜150,000，通过凝胶渗透色谱法测定溶解在四氢呋喃中的调色剂部分，分子量分布峰值分别为1000〜10,000，100,000 至150万。

公开(公告)号：US06866978B2

公开(公告)日：2005-03-15

申请号：US09987413

申请日：2001-11-14

Applicant: Yoshifumi Iida ,  Suk Kim ,  Masanori Ichimura

Inventor： Yoshifumi Iida ,  Suk Kim ,  Masanori Ichimura

IPC: G03G9/08 ,  G03G9/09 ,  G03G9/097 ,  G03G9/113

CPC classification number: G03G9/0823 ,  G03G9/09 ,  G03G9/09716

Abstract: The toner comprises a white color toner particle and an external additive containing a hydrophobic titanium oxide particle. The absolute charge value of the toner is 20 to 50 μC/g. The developer contains a white color toner particle and a carrier having a surface coated with a resin containing a fluororesin.

公开(公告)号：US5738962A

公开(公告)日：1998-04-14

申请号：US730936

申请日：1996-10-16

Applicant: Masanori Ichimura ,  Hiroshi Takano ,  Masaki Hashimoto ,  Hideyuki Akagi ,  Kazuya Furuta ,  Koji Fukushima

Inventor： Masanori Ichimura ,  Hiroshi Takano ,  Masaki Hashimoto ,  Hideyuki Akagi ,  Kazuya Furuta ,  Koji Fukushima

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G13/01 ,  G03G15/01 ,  G03G13/16

CPC classification number: G03G9/0819 ,  G03G13/013 ,  G03G9/09

Abstract: The toner for full-color image formation of the invention comprises a binder resin and a colorant, wherein the toner has a volume-average particle diameter of from 3.0 to 9.0 .mu.m and satisfies relationship (1) between the volume-average particle diameter and a colorant content thereof: 11.0/R.ltoreq.C.ltoreq.21.5/R (1) wherein R is 1/2 of the volume-average particle diameter of the toner (.mu.m) and C is the colorant content of the toner (wt %). This toner for full-color image formation is used to conduct development in such a manner that the toner amount transferred to the receiving paper satisfies relationship (2): 0.116R.ltoreq.TMA.ltoreq..ltoreq.0.0223R (2) wherein R is 1/2 of the volume-average particle diameter of the toner (.mu.m) and TMA is the weight of the toner (mg/cm.sup.2) transferred to the receiving paper in a monochromatic solid part thereof.

Abstract translation: 本发明的全色图像形成用调色剂包括粘合剂树脂和着色剂，其中调色剂的体积平均粒径为3.0〜9.0μm，并且满足体积平均粒径与 其着色剂含量为：11.0 / R C = 21.5 / R（1）其中R是调色剂的体积平均粒径（μm）的C + E， 调色剂的着色剂含量（重量％）。 用于全色图像形成的这种调色剂用于进行显影，使得转印到接收纸的调色剂量满足关系式（2）：0.116R≤TMA

公开(公告)号：US5705303A

公开(公告)日：1998-01-06

申请号：US616760

申请日：1996-03-15

Applicant: Masanori Ichimura ,  Michio Take ,  Susumu Saito

Inventor： Masanori Ichimura ,  Michio Take ,  Susumu Saito

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

CPC classification number: G03G9/09725 ,  G03G9/09716

Abstract: A toner composition for electrophotography comprising toner particles comprising a binder and a colorant and an additive, wherein the additive is crystalline titanium dioxide fine particles which have been treated with a coupling agent and which have a specific surface area of 60 to 100 m.sup.2 /g and a Karl Fischer moisture content of not more than 5% by weight. Compounds represented by formulae (I), (II) or (III) are used as the coupling agent: R.sup.1 Si(X).sub.3 (I) R.sup.1' R.sup.2 Si(X).sub.2 (II) R.sup.1' R.sup.2 R.sup.3 SiX (III) wherein R.sup.1 represents an alkyl group having 9 to 20 carbon atoms; R.sup.1' represents an alkyl group having 1 to 20 carbon atoms; R.sup.2 and R.sup.3 each represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 30 carbon atoms; and X represents a chlorine atom, an alkoxy group having 1 to 10 carbon atoms or an acetoxy-group having 3 to 5 carbon atoms.

Abstract translation: 一种电子照相用调色剂组合物，其包括含有粘合剂和着色剂和添加剂的调色剂颗粒，其中所述添加剂是已经用偶联剂处理并具有60-100m 2 / g比表面积的结晶二氧化钛细颗粒， 卡尔费休水分含量不超过5％重量。 由式（I），（II）或（III）表示的化合物用作偶联剂：R1Si（X）3（I）R1'R2Si（X）2（II）R1'R2R3SiX（Ⅲ）其中R1表示 具有9至20个碳原子的烷基; R1'表示碳原子数1〜20的烷基， R2和R3各自表示氢原子，碳原子数1〜20的烷基或碳原子数6〜30的芳基。 X表示氯原子，碳原子数1〜10的烷氧基或碳原子数3〜5的乙酰氧基。