公开(公告)号：US06383704B1

公开(公告)日：2002-05-07

申请号：US09723241

申请日：2000-11-28

Applicant: Rieko Kataoka ,  Susumu Yoshino ,  Akihiro Iizuka ,  Koutarou Yoshihara ,  Haruhide Ishida ,  Tetsuya Taguchi ,  Fumiaki Mera ,  Hiroshi Takano ,  Yasuhiro Oya ,  Michio Take

Inventor： Rieko Kataoka ,  Susumu Yoshino ,  Akihiro Iizuka ,  Koutarou Yoshihara ,  Haruhide Ishida ,  Tetsuya Taguchi ,  Fumiaki Mera ,  Hiroshi Takano ,  Yasuhiro Oya ,  Michio Take

IPC: G03G910

CPC classification number: G03G9/1075 ,  G03G9/08782 ,  G03G9/09708 ,  G03G9/09716

Abstract: A full color electrophotographic toner including toner particles containing at least a binder resin, a colorant and a wax, and external additives, at least one of the external additives being rutile titanium oxide having a volume resistivity of 1×1014 to 1×1018 &OHgr;cm, and a dispersion absolute deviation a of rutile titanium oxide being 0.17 or less, and a full color electrophotographic developer and an image forming method using the same are provided. In the full color electrophotographic toner, the full color electrophotographic developer and the image forming method of the invention, a retransfer phenomenon of the transferred toner can be prevented, a chargeability and a transferability are not problematic at all, a charging amount of the toner in long-term use can be rendered appropriate and stable, and a fluidity is also excellent.

Abstract translation: 包含至少含有粘合剂树脂，着色剂和蜡的调色剂颗粒和外部添加剂的全色电子照相调色剂，至少一种外部添加剂是体积电阻率为1×10 14至1×10 18 OMEGA cm的金红石型氧化钛，以及分散绝对 金红石型氧化钛的偏差为0.17以下，全色电子照相显影剂和使用其的图像形成方法。 在全色电子照相调色剂，全色电子照相显影剂和本发明的成像方法中，可以防止转印的调色剂的再转印现象，带电性和转印性完全没有问题，调色剂的带电量 长期使用可以适当和稳定，流动性也很好。

公开(公告)号：US5650254A

公开(公告)日：1997-07-22

申请号：US667649

申请日：1996-06-21

Applicant: Atsuhiko Eguchi ,  Haruhide Ishida ,  Yoshifumi Iida ,  Kaori Ohishi ,  Takayoshi Aoki ,  Toshiyuki Yano

Inventor： Atsuhiko Eguchi ,  Haruhide Ishida ,  Yoshifumi Iida ,  Kaori Ohishi ,  Takayoshi Aoki ,  Toshiyuki Yano

IPC: G03G9/087 ,  G03G13/08 ,  G03G13/22

CPC classification number: G03G9/08786 ,  G03G13/08 ,  G03G9/08704

Abstract: A image formation process comprising the steps of forming an electrostatic latent image on an electrostatic latent image carrier, developing the electrostatic latent image with a developer to provide a toner image, transferring the toner image to a transfer material, and heat-fixing the toner image on the transfer material, wherein the developer comprises a toner for developing electrostatic latent images comprising a binder, a colorant, and 1 to 30% by weight of a lubricant which comprises a modified polyethylene wax which is obtained by homopolymerizing ethylene or copolymerizing ethylene and an .alpha.-olefin having 3 to 10 carbon atoms in the presence of a metallocene catalyst and modifying the resulting ethylene homo- or copolymer by grafting at least one grafting monomer selected from the group consisting of a styrene monomer and an unsaturated carboxylic acid monomer, and has a hexane extraction of not more than 65% by weight, and wherein the transfer step comprises bringing a bias roll into contact with the back side of a transfer material. The image formation process of the present invention requires less power consumption. The toner for use in the present invention provides a good releasability at low temperatures and shows excellent anti-offset properties and powder fluidity without causing the generation of ozone, image defects and blocking.

Abstract translation: 一种图像形成方法，包括以下步骤：在静电潜像载体上形成静电潜像，用显影剂显影静电潜像以提供调色剂图像，将调色剂图像转印到转印材料上，并将调色剂图像 在转印材料上，其中显影剂包括用于显影静电潜像的调色剂，其包含粘合剂，着色剂和1至30重量％的润滑剂，其包含通过乙烯均聚或乙烯共聚获得的改性聚乙烯蜡和 在茂金属催化剂的存在下，具有3〜10个碳原子的α-烯烃，并通过接枝至少一种选自苯乙烯单体和不饱和羧酸单体的接枝单体改性所得到的乙烯均聚物或共聚物，并具有 己烷萃取不超过65重量％，并且其中转移步骤包括使bi 与转印材料的背面接触。 本发明的图像形成处理需要较少的功耗。 用于本发明的调色剂在低温下提供良好的脱模性，并且显示出优异的抗污损性和粉末流动性，而不会引起臭氧的产生，图像缺陷和阻塞。

公开(公告)号：US20120107739A1

公开(公告)日：2012-05-03

申请号：US13094253

申请日：2011-04-26

Applicant: Takayuki YAMASHITA ,  Kazuhiko ARAI ,  Kunihiko SATO ,  Haruhide ISHIDA ,  Michio TAKE ,  Sakon TAKAHASHI ,  Fusako KIYONO ,  Yoshifumi IIDA ,  Mona TASAKI

Inventor： Takayuki YAMASHITA ,  Kazuhiko ARAI ,  Kunihiko SATO ,  Haruhide ISHIDA ,  Michio TAKE ,  Sakon TAKAHASHI ,  Fusako KIYONO ,  Yoshifumi IIDA ,  Mona TASAKI

IPC: G03G15/09 ,  G03G21/00 ,  G03G21/18

CPC classification number: G03G21/0094 ,  G03G9/0819 ,  G03G9/08755 ,  G03G9/08797 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/113

Abstract: The present invention provides an electrostatic latent image developer used in an image forming apparatus including: an image holding member; a charging unit; a latent image forming unit; a developing unit which stores the electrostatic latent image developer and includes a developer holding member, wherein the developing unit develops the electrostatic latent image formed on the image holding member by bringing a magnetic brush, which is formed on a surface of the developer holding member by the electrostatic latent image developer, into contact with the image holding member, to form a toner image; a transfer unit; a cleaning unit; and a lubricant applying unit, wherein the electrostatic latent image developer contains a toner having a 50% integrated volume particle diameter of from 3.0 to 6.0 μm, and a carrier having a mean magnetization of 5.0×10−16 to 4.0×10−15 AM2/particle in an applied magnetic field of 1 kilo-oersted.

Abstract translation: 本发明提供一种图像形成装置中使用的静电潜像显影剂，包括：图像保持部件; 充电单元; 潜像形成单元; 显影单元，其存储静电潜像显影剂并且包括显影剂保持部件，其中，显影单元通过使形成在显影剂保持部件的表面上的磁刷被形成在图像保持部件上而形成的静电潜像 静电潜像显影剂与图像保持部件接触以形成调色剂图像; 转运单位 清洁单元; 以及润滑剂涂布单元，其中所述静电潜像显影剂含有具有3.0至6.0μm的一体积体积的50％的调色剂和平均磁化强度为5.0×10-16至4.0×10-15AM2的载体 /颗粒在1千奥斯特施加的磁场中。

公开(公告)号：US20120093543A1

公开(公告)日：2012-04-19

申请号：US13204316

申请日：2011-08-05

Applicant: Miho IKEDA ,  Sakon TAKAHASHI ,  Kazuhiko ARAI ,  Haruhide ISHIDA ,  Michio TAKE ,  Kunihiko SATO ,  Yoshinori KUBO ,  Fusako KIYONO

Inventor： Miho IKEDA ,  Sakon TAKAHASHI ,  Kazuhiko ARAI ,  Haruhide ISHIDA ,  Michio TAKE ,  Kunihiko SATO ,  Yoshinori KUBO ,  Fusako KIYONO

IPC: G03G15/09

CPC classification number: G03G15/09 ,  G03G9/0819 ,  G03G9/1075 ,  G03G2215/00957 ,  G03G2215/0609

Abstract: An electrostatic latent image developer contains a toner having a volume-average particle diameter of about 2.0 μm to about 6.5 μm, and a carrier whose average magnetization per carrier particle at an applied magnetic field of 1 kilooersted is about 3.0×10−16 Am2/particle to about 3.0×10−15 Am2/particle, wherein the electrostatic latent image developer is used in an image forming apparatus including an image-carrying member having a top surface layer composed of a cured film containing fluorocarbon resin particles, a developing unit that develops an electrostatic latent image formed on the image-carrying member to form a toner image by bringing a magnetic brush formed of the electrostatic latent image developer and having a brush roughness of about 300 μm to about 850 μm into contact with the image-carrying member, and a cleaning unit that includes a cleaning blade.

Abstract translation: 静电潜像显影剂含有体积平均粒径为约2.0μm至约6.5μm的调色剂，并且在1kostst的施加磁场下载体颗粒的平均磁化强度为约3.0×10-16 Am 2 / 颗粒至约3.0×10 -15 Am 2 /颗粒，其中所述静电潜像显影剂用于包括具有由含有氟碳树脂颗粒的固化膜构成的顶表面层的图像承载构件的图像形成装置，显影单元， 通过使由静电潜像显影剂形成的具有约300μm至约850μm的刷子粗糙度的磁刷与图像承载构件接触来形成形成在图像承载构件上的静电潜像以形成调色剂图像， 以及包括清洁刮板的清洁单元。

公开(公告)号：US06379857B1

公开(公告)日：2002-04-30

申请号：US09707932

申请日：2000-11-08

Applicant: Tetsuya Taguchi ,  Akihiro Iizuka ,  Koutarou Yoshihara ,  Susumu Yoshino ,  Haruhide Ishida ,  Rieko Kataoka

Inventor： Tetsuya Taguchi ,  Akihiro Iizuka ,  Koutarou Yoshihara ,  Susumu Yoshino ,  Haruhide Ishida ,  Rieko Kataoka

IPC: G03G1314

CPC classification number: G03G9/0823 ,  G03G13/013 ,  G03G2215/0609

Abstract: Provided is a method for image formation capable of stably outputting high-quality images with no image density unevenness for a long period of time, in which the images formed are free from image defects of edge deletions and other deletions therein and which ensures good and uniform developability everywhere in the latent image region to be developed with preventing the latent image support used from being degraded. The method includes a step of forming a latent image on a latent image support, a step of developing the latent image on the latent image support with a two-component developer on a developer support disposed to face the latent image support, and a step of transferring the thus-developed toner image onto a transfer medium, wherein the developer support is a cylindrical sleeve having a diameter of at most 20 mm or the latent image support is a cylindrical sleeve having a diameter of at most 40 mm, and the resistance of the two-component developer is at least 1013&OHgr; in an electric field of 2 V/&mgr;m.

Abstract translation: 本发明提供一种图像形成方法，其能够稳定地输出长时间没有图像浓度不均匀的高质量图像，其中所形成的图像没有边缘缺失的图像缺陷和其他缺失，并且确保良好和均匀 在潜像图像区域中随处可见的显影性能可以防止所使用的潜像支持物降解。 该方法包括在潜像载体上形成潜像的步骤，用设置在与潜像载体相对的显影剂载体上的双组分显影剂将潜影载体上的潜像显影的步骤，以及步骤 将如此显影的调色剂图像转印到转印介质上，其中显影剂载体是直径至多为20mm的圆柱形套筒，或​​潜像载体为直径至多为40mm的圆柱形套筒， 双组分显影剂在2V / m 2的电场中为至少1013OMEGA。

公开(公告)号：US5629120A

公开(公告)日：1997-05-13

申请号：US543343

申请日：1995-10-16

Applicant: Manabu Serizawa ,  Ikutaroh Nagatsuka ,  Haruhide Ishida ,  Sakon Takahashi

Inventor： Manabu Serizawa ,  Ikutaroh Nagatsuka ,  Haruhide Ishida ,  Sakon Takahashi

IPC: G03G9/08 ,  G03G9/107 ,  G03G9/113

CPC classification number: G03G9/107

Abstract: The present invention provides an electrostatic image developing carrier which exhibits an enhanced maintenance of image quality, can be prevented from being attached to the image and thus can provide an image free of uneven density and background stain and an electrostatic image developer comprising said carrier. A novel electrostatic image developing carrier comprising a ferrite is provided, characterized in that said ferrite has a copper content of from 0.1 ppm to 2,500 ppm, a zinc content of from 0.1 ppm to 5,000 ppm and a nickel content of from 0.1 ppm to 2,000 ppm.

Abstract translation: 本发明提供一种可以防止图像质量保持增强的静电图像显影载体，从而可以提供不含密度和背景污染的图像，以及包含所述载体的静电图像显影剂。 提供一种包含铁素体的新型静电图像显影载体，其特征在于，所述铁素体的铜含量为0.1ppm至2,500ppm，锌含量为0.1ppm至5,000ppm，镍含量为0.1ppm至2,000ppm 。

公开(公告)号：US06733938B1

公开(公告)日：2004-05-11

申请号：US09722828

申请日：2000-11-28

Applicant: Masanobu Ninomiya ,  Yasuhiro Oya ,  Hidekazu Yaguchi ,  Hirokazu Hamano ,  Haruhide Ishida

Inventor： Masanobu Ninomiya ,  Yasuhiro Oya ,  Hidekazu Yaguchi ,  Hirokazu Hamano ,  Haruhide Ishida

IPC: G03G9097

CPC classification number: G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09708 ,  G03G13/20

Abstract: A toner for developing an electrostatic latent image, wherein in regard to the molecular weight by GPC of the THF dissolved components of the toner, the ratio of at least 5×105 in the integral molecular weight distribution is not higher than 1% by weight, the ratio of not higher than 3×103 is not higher than 30% by weight, and the ratio {W(5×103)/W(1×105)} of the ratio {W(5×103)} of not higher than 5×103 to the ratio {W(1×105)} of at least 1×105 is from 15 to 50. Also, the molecular weight by GPC of the THF dissolved components of the toner is distributed in the range of not larger than 1×106, the value of the differential molecular weight distribution of the molecular weight of 5×103 is not larger than 0.55%, and the value of the differential molecular weight distribution of the molecular weight of 1×105 is not larger than 0.15%.

Abstract translation: 用于显影静电潜像的调色剂，其中关于调色剂的THF溶解组分通过GPC的分子量，在整体分子量分布中至少5×10 5的比率不高于1重量％ ，不高于3×10 3的比例不高于30重量％，比例{W（5×10 -3）/ W（5×10 3）/ W（1×10 5） 至少1×10 5的比率（W（1×10 5））不高于5×10 3的比例为15至50.此外，调色剂的THF溶解组分的GPC分子量 分布在不大于1×10 6的范围内，分子量为5×10 3的差分分子量分布的值不大于0.55％，分子的分子量分布值 1×10 5的重量不大于0.15％。

公开(公告)号：US6040102A

公开(公告)日：2000-03-21

申请号：US982301

申请日：1997-12-01

Applicant: Sakon Takahashi ,  Shinpei Takagi ,  Noriyuki Mizutani ,  Yasuhiro Oya ,  Haruhide Ishida

Inventor： Sakon Takahashi ,  Shinpei Takagi ,  Noriyuki Mizutani ,  Yasuhiro Oya ,  Haruhide Ishida

IPC: G03G9/087 ,  G03G9/08 ,  G03G9/09 ,  G03G9/097 ,  G03G9/10 ,  G03G9/113

CPC classification number: G03G9/0823 ,  G03G9/08 ,  G03G9/09708 ,  G03G9/10 ,  G03G9/1139

Abstract: An electrostatic latent image developer including a toner, which is formed from an outer additive and non-magnetic resin particles containing a binder resin and a coloring agent, and a carrier, in which a resin coating layer in which electroconductive fine powder is dispersed in a matrix resin is formed on a core, wherein a volume specific resistivity of said carrier is greater than or equal to 10.sup.9 .OMEGA..multidot.cm at an electric field strength of 3000 V/cm and is less than or equal to 10.sup.13 .OMEGA..multidot.cm at an electric field strength of 10000 V/cm, said outer additive contains titanium oxide whose volume specific resistivity of a compression-molded molded product is greater than or equal to 10.sup.6 .OMEGA..multidot.cm at an electric field strength of 3000 V/cm and is less than or equal to 10.sup.10 .OMEGA..multidot.cm at an electric field strength of 10000 V/cm, and a volume specific resistivity of said electrostatic latent image developer when a toner concentration is greater than or equal to 2% is greater than or equal to 10.sup.11 .OMEGA..multidot.cm at an electric field strength of 3000 V/cm.Further, the present invention provides an image forming method including steps of forming a latent image on a latent image holding member, and developing the latent image by using said electrostatic latent image developer.

Abstract translation: 包含由外部添加剂形成的调色剂和包含粘合剂树脂和着色剂的非磁性树脂颗粒和载体的静电潜像显影剂，其中导电细粉末分散在其中的树脂涂层 基体树脂形成在芯上，其中所述载体的体积电阻率在3000V / cm的电场强度下大于或等于109ΩEGAxcm，并且在电场强度下小于或等于1013ΩEGAxcm 所述外添加剂含有在3000V / cm的电场强度下压缩成型制品的体积电阻率大于或等于106ΩEGA×cm的氧化钛，小于等于1010 电场强度为10000V / cm的OMEGA xcm，当调色剂浓度大于或等于2％时所述静电潜像显影剂的体积电阻率大于或等于 1011 OMEGA xcm，电场强度为3000V / cm。 此外，本发明提供一种图像形成方法，包括以下步骤：在潜像保持部件上形成潜像，并通过使用所述静电潜像显影剂使潜像显影。

公开(公告)号：US5958642A

公开(公告)日：1999-09-28

申请号：US102358

申请日：1998-06-23

Applicant: Shinpei Takagi ,  Yasuhiro Oya ,  Etsuo Tominaga ,  Toyohumi Inoue ,  Tomohiro Takeda ,  Masahiro Uchida ,  Haruhide Ishida ,  Kouzou Ota ,  Hirokazu Hamano ,  Yusaku Shibuya ,  Jun Igarashi ,  Atsuhiko Eguchi ,  Yutaka Sugizaki

Inventor： Shinpei Takagi ,  Yasuhiro Oya ,  Etsuo Tominaga ,  Toyohumi Inoue ,  Tomohiro Takeda ,  Masahiro Uchida ,  Haruhide Ishida ,  Kouzou Ota ,  Hirokazu Hamano ,  Yusaku Shibuya ,  Jun Igarashi ,  Atsuhiko Eguchi ,  Yutaka Sugizaki

IPC: G03G9/083 ,  G03G9/08 ,  G03G9/087 ,  G03G9/113 ,  G03G15/08 ,  G03G9/097 ,  G03G13/22

CPC classification number: G03G9/08706 ,  G03G9/08704 ,  G03G9/08782

Abstract: The toner for developing an electrostatic charge image comprises a colorant, a binding resin and a resin copolymer of aliphatic hydrocarbon and aromatic hydrocarbon having 9 or more of carbon atoms. Preferably, the toner further comprises a wax. The endothermic peak of the wax at DSC is preferably from 70 to 100.degree. C. The petroleum resin copolymer preferably has a ring and ball softening point of from 80 to 170.degree. C., and the binding resin is preferably a polyester resin. The weight ratio of the aromatic hydrocarbon monomer and the aliphatic hydrocarbon monomer of the petroleum resin copolymer is preferably from 99:1 to 50:50.

Abstract translation: 用于显影静电荷图像的调色剂包括着色剂，粘合树脂和脂族烃和具有9个或更多个碳原子的芳族烃的树脂共聚物。 优选地，调色剂还包含蜡。 DSC中的蜡的吸热峰优选为70〜100℃。石油树脂共聚物的环球软化点优选为80〜170℃，粘合树脂优选为聚酯树脂。 石油树脂共聚物的芳香族烃单体和脂肪族烃单体的重量比优选为99:1〜50:50。

公开(公告)号：US5821023A

公开(公告)日：1998-10-13

申请号：US862701

申请日：1997-05-23

Applicant: Yuusaku Shibuya ,  Yasuhiro Oya ,  Haruhide Ishida ,  Susumu Yoshino ,  Hirokazu Hamano ,  Kaori Ohishi ,  Satoshi Inoue ,  Jun Igarashi ,  Chiaki Suzuki ,  Sueko Sakai

Inventor： Yuusaku Shibuya ,  Yasuhiro Oya ,  Haruhide Ishida ,  Susumu Yoshino ,  Hirokazu Hamano ,  Kaori Ohishi ,  Satoshi Inoue ,  Jun Igarashi ,  Chiaki Suzuki ,  Sueko Sakai

IPC: G03G9/113 ,  G03G13/08 ,  G03G15/08

CPC classification number: G03G9/113 ,  G03G9/1131

Abstract: The present invention provides a long-life carrier for developing an electrostatic latent image to be used in such field of applications as electrostatic photography and electrostatic recording, a developer of an electrostatic latent image utilizing said carrier, a method for forming an image and an image forming apparatus by using said developer. By use of the foregoing qualities, a high-quality image can be obtained.

Abstract translation: 本发明提供一种用于显影静电潜像的长寿命载体，用于静电摄影和静电记录等应用领域，利用所述载体的静电潜像的显影剂，形成图像和图像的方法 通过使用所述显影剂形成装置。 通过使用上述质量，可以获得高质量的图像。