公开(公告)号：US06746808B2

公开(公告)日：2004-06-08

申请号：US10106323

申请日：2002-03-27

申请人： Yasushige Nakamura ,  Shinichi Yaoi ,  Tomoaki Tanaka ,  Yoshimichi Katagiri ,  Seijiro Ishimaru ,  Satoshi Takezawa ,  Sadaaki Yoshida

发明人： Yasushige Nakamura ,  Shinichi Yaoi ,  Tomoaki Tanaka ,  Yoshimichi Katagiri ,  Seijiro Ishimaru ,  Satoshi Takezawa ,  Sadaaki Yoshida

IPC分类号： G03G900

CPC分类号： G03G9/09783 ,  G03G9/0912 ,  G03G9/0916 ,  G03G9/0926 ,  G03G9/097 ,  G03G9/09758 ,  G03G9/09775

摘要： In a color toner for forming an image, comprising at least a binder resin and a colorant, light-absorbing fine composite particles comprising core particles and at least two coating layers having different refractive indexes laminated on the surface of the core particles or other IR-absorbing compounds such as an azulene compound having a specific structure are used as an infrared absorbing compound. The color toner is used in an electrophotographic color image forming apparatus using a photofixing system for fixing a toner image.

摘要翻译： 在用于形成图像的彩色调色剂中，至少包含粘合剂树脂和着色剂，包含芯颗粒和至少两层具有不同折射率的涂层的光吸收复合微粒层压在芯颗粒或其它IR- 吸收化合物如具有特定结构的薁化合物被用作红外吸收化合物。 彩色调色剂用于使用用于固定调色剂图像的光固化系统的电子照相彩色图像形成装置。

公开(公告)号：US20050014082A1

公开(公告)日：2005-01-20

申请号：US10493790

申请日：2002-06-07

申请人： Seijiro Ishimaru ,  Sadaaki Yoshida

发明人： Seijiro Ishimaru ,  Sadaaki Yoshida

IPC分类号： G03G9/083 ,  G03G9/09

CPC分类号： G03G9/0837 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0838 ,  G03G9/0839 ,  G03G9/09

摘要： An object of the present invention is to provide an electrophotographic toner which has good fabrication property and excellent developing property, and can form an image having sufficient density and excellent fixing property. As a coloring material for the electrophotographic toner, a black pigment with substantially weak magnetic or non-magnetic property and having a predetermined particle size is used. The electrophotographic toner comprises: a binder resin; and particles containing manganese and iron and having a hematite structure, wherein manganese content is 3 to 30% by weight, an average particle size is 0.01 to 2.0 μm, and saturation magnetization (σs) is 2 emu/g or less, in the particles.

摘要翻译： 本发明的目的是提供一种具有良好的制造性能和显影性优异的电子照相调色剂，并且可以形成具有足够的密度和优异的定影性能的图像。 作为电子照相调色剂的着色材料，使用具有基本上弱的磁性或非磁性并具有预定粒径的黑色颜料。 电子照相调色剂包括：粘合剂树脂; 含有锰和铁并具有赤铁矿结构的颗粒，其中锰含量为3〜30重量％，平均粒径为0.01〜2.0μm，饱和磁化强度（sigmas）为2emu / g以下。 。

公开(公告)号：US07252914B2

公开(公告)日：2007-08-07

申请号：US10278900

申请日：2002-10-24

申请人： Yasushige Nakamura ,  Tomoaki Tanaka ,  Seijiro Ishimaru ,  Sadaaki Yoshida ,  Yoshimichi Katagiri

发明人： Yasushige Nakamura ,  Tomoaki Tanaka ,  Seijiro Ishimaru ,  Sadaaki Yoshida ,  Yoshimichi Katagiri

IPC分类号： G03G13/01 ,  G03G9/08

CPC分类号： G03G9/08782 ,  G03G9/08704 ,  G03G9/08755 ,  G03G9/09733

摘要： A toner for electrophotography fulfilling both the fixability and the void resistance at high level, and forms a high-quality image. The toner for electrophotography contains: a binder resin; and a wax component which contains: a first wax having an endothermic peak in a temperature region of 60 to 90° C., the endothermic peak occurring in the temperature-rising stage of a DSC curve determined by a differential scanning calorimeter, and having a molecular weight distribution (weight-average molecular weight (Mw)/number-average molecular weight (Mn)) of 1.5 or less, and substantially not containing a component having 500 Mw or less; and at least any of a second wax having an endothermic peak in a temperature region of 100 to 150° C. and the molecular weight distribution of 5 to 20; and a third wax having an endothermic peak in a temperature region of 150 to 170° C. and the molecular weight distribution of 1.1 or more.

摘要翻译： 用于电子照相的调色剂既满足高定位性和空隙阻力，又形成高质量的图像。 用于电子照相的调色剂包含：粘合剂树脂; 蜡组分，其含有：在60〜90℃的温度范围内具有吸热峰的第一蜡，在由差示扫描量热计测定的DSC曲线的升温阶段中发生的吸热峰，具有 分子量分布（重均分子量（Mw）/数均分子量（Mn））为1.5以下，基本上不含有500分米以下的成分; 以及在100〜150℃的温度区域和5〜20的分子量分布中具有吸热峰的第二蜡中的至少任意一种; 和在150〜170℃的温度范围内具有吸热峰的第三蜡，分子量分布为1.1以上。

公开(公告)号：US5240804A

公开(公告)日：1993-08-31

申请号：US736436

申请日：1991-07-26

申请人： Tetsuya Nakano ,  Naruo Yabe ,  Masahide Inoue ,  Teruaki Teratani ,  Koichi Tsuyama ,  Seijiro Ishimaru ,  Yoshitake Shimizu

发明人： Tetsuya Nakano ,  Naruo Yabe ,  Masahide Inoue ,  Teruaki Teratani ,  Koichi Tsuyama ,  Seijiro Ishimaru ,  Yoshitake Shimizu

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/113

CPC分类号： G03G9/09 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/091 ,  G03G9/1133

摘要： The present invention provides an electrophotographic developer comprising (i) a toner containing a fixing resin in which the content of an acrylic component is limited to a predetermined range, or a toner of which surface dye density is limited to a predetermined range, and (ii) a carrier coated with a coating resin containing, as an acrylic component, dodecyl methacrylate or 2-hydroxyethyl acrylate.In the electrophotographic developer of the present invention, the electric charging characteristics are always stable.

公开(公告)号：US08383308B2

公开(公告)日：2013-02-26

申请号：US12260684

申请日：2008-10-29

申请人： Sakon Takahashi ,  Daisuke Ishizuka ,  Michio Take ,  Seijiro Ishimaru ,  Chiaki Suzuki

发明人： Sakon Takahashi ,  Daisuke Ishizuka ,  Michio Take ,  Seijiro Ishimaru ,  Chiaki Suzuki

IPC分类号： G03G9/08

CPC分类号： G03G9/08755 ,  G03G9/0823 ,  G03G9/08782 ,  G03G9/08786 ,  G03G9/1136

摘要： A positively chargeable two-component developer, including at least a toner and a carrier, wherein the toner contains a binder resin, a colorant, a wax, and a charge control agent, the binder resin contains at least a polyester resin and an addition polymerization resin grafted with a polyolefin, the wax and the addition polymerization resin grafted with a polyolefin are contained at a wax:addition polymerization resin grafted with a polyolefin ratio of from about 40:60 to about 80:20, and the carrier is a magnetic powder having a coating layer containing a methyl-containing silicone resin.

摘要翻译： 一种可带正​​电荷的双组分显影剂，包括至少一种调色剂和载体，其中调色剂含有粘合剂树脂，着色剂，蜡和电荷控制剂，该粘合剂树脂至少含有一种聚酯树脂和一种加成聚合 用聚烯烃接枝的树脂，蜡和接枝有聚烯烃的加成聚合树脂包含在蜡：接枝聚烯烃比为约40:60至约80:20的加成聚合树脂中，载体是磁性粉末 具有含有含甲基的有机硅树脂的涂层。

公开(公告)号：US06967070B2

公开(公告)日：2005-11-22

申请号：US09987464

申请日：2001-11-14

申请人： Yasushige Nakamura ,  Toru Takahashi ,  Tsuneo Watanuki ,  Norio Sawatari ,  Seijiro Ishimaru ,  Yasuyuki Furuse

发明人： Yasushige Nakamura ,  Toru Takahashi ,  Tsuneo Watanuki ,  Norio Sawatari ,  Seijiro Ishimaru ,  Yasuyuki Furuse

IPC分类号： G03G9/087 ,  G03G9/097 ,  G03G13/20

CPC分类号： G03G9/08704 ,  G03G9/08742 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/09733 ,  G03G13/20

摘要： An electrophotographic toner comprising a binder resin and a colorant, which is used in electrophotographic process employing a flash fixing system for fixation of a transferred toner image, wherein the binder resin is a polyester resin which partially contains a chloroform-insoluble content; and the toner contains a polypropylene resin and an ester type structure resin represented by the following formula (I); wherein p, q, m and n each represents a positive integer of 16 to 22 and R may be the same or different and each represents a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms. The electrophotographic toner is capable of remarkably enhancing the fixation strength of the toner and inhibiting the occurrence of voids during the printing and the occurrence of fuming and odor during the fixation.

摘要翻译： 一种电子照相调色剂，其包含粘合剂树脂和着色剂，其用于使用用于固定转印的调色剂图像的闪光固定系统的电子照相方法，其中所述粘合剂树脂是部分含有不溶于氯仿的内容物的聚酯树脂; 并且调色剂含有聚丙烯树脂和由下式（I）表示的酯型结构树脂; 其中p，q，m和n各自表示16〜22的正整数，R可以相同或不同，表示氢原子或碳原子数1〜4的低级烷基。 电子照相调色剂能够显着增强调色剂的固定强度，并且抑制印刷期间空隙的发生以及固定期间发烟和气味的发生。

公开(公告)号：US06833228B2

公开(公告)日：2004-12-21

申请号：US10614240

申请日：2003-07-08

申请人： Yasushige Nakamura ,  Seijiro Ishimaru ,  Mutsuo Watanabe ,  Yoshimichi Katagiri

发明人： Yasushige Nakamura ,  Seijiro Ishimaru ,  Mutsuo Watanabe ,  Yoshimichi Katagiri

IPC分类号： G03G1520

CPC分类号： G03G9/09716 ,  G03G9/08 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/0902 ,  G03G9/0926 ,  G03G9/0928 ,  G03G9/09708 ,  G03G13/20 ,  G03G15/201

摘要： A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

公开(公告)号：US5521045A

公开(公告)日：1996-05-28

申请号：US343975

申请日：1994-11-18

申请人： Masatomi Funato ,  Yoshitake Shimizu ,  Seijiro Ishimaru ,  Kazuya Nagao

发明人： Masatomi Funato ,  Yoshitake Shimizu ,  Seijiro Ishimaru ,  Kazuya Nagao

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/08728 ,  G03G9/083 ,  G03G9/08791 ,  Y10S430/105

摘要： A toner in which a small amount of magnetic powder is disposed in a resin medium for fixing which comprises a cationic polar group-containing copolymer resin or a resin composition. A distinguished feature resides in that the toner does not contain a charge control agent. The toner is positively charged and exhibits very good spent resistance. The toner further exhibits favorable electrophotographic properties such as transfer efficiency despite there is contained no charge control agent.

摘要翻译： 在包含阳离子极性基团的共聚物树脂或树脂组合物的固定用树脂介质中配置少量磁性粉末的调色剂。 一个显着的特征在于调色剂不含电荷控制剂。 调色剂带正电，表现出非常好的耐电阻性。 即使不含电荷控制剂，调色剂还表现出良好的电子照相特性，如转印效率。

公开(公告)号：US06544707B2

公开(公告)日：2003-04-08

申请号：US09768290

申请日：2001-01-25

申请人： Yasushige Nakamura ,  Seijiro Ishimaru ,  Yoshimichi Katagiri ,  Yuji Sato ,  Tsuyoshi Itagoshi ,  Hiromichi Kobayashi

发明人： Yasushige Nakamura ,  Seijiro Ishimaru ,  Yoshimichi Katagiri ,  Yuji Sato ,  Tsuyoshi Itagoshi ,  Hiromichi Kobayashi

IPC分类号： G03G913

CPC分类号： G03G9/08755 ,  G03G9/0819 ,  G03G9/083 ,  G03G9/0836 ,  G03G9/0838 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113 ,  G03G9/1136

摘要： There is disclosed a two-component developing agent for use in an mage formation based on electrophotography, which has high developability even at a high speed printing and good developability in the case of the image formation for a long period of time. The two-component developing agent includes a carrier comprising a magnetic particle and an insulating toner. A surface of the magnetic particle is coated with at least a resin. A mean particle size of the magnetic particle is between 30 and 90 &mgr;m and an aggregation degree of said carrier is between 2 and 15%.

公开(公告)号：US5750301A

公开(公告)日：1998-05-12

申请号：US658725

申请日：1996-06-05

申请人： Masatomi Funato ,  Yoshitake Shimizu ,  Seijiro Ishimaru ,  Norio Kubo ,  Kazuya Nagao ,  Terumichi Asano

发明人： Masatomi Funato ,  Yoshitake Shimizu ,  Seijiro Ishimaru ,  Norio Kubo ,  Kazuya Nagao ,  Terumichi Asano

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G9/097

CPC分类号： G03G9/09725 ,  G03G9/083 ,  G03G9/08711 ,  G03G9/08782 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/09716 ,  Y10S430/105

摘要： The invention provides toner for a two-component type developer containing toner particles including a binder resin and magnetic powder dispersed in the binder resin. The binder resin in the toner is prepared from a composition including at least one of (1) a polymer having an anionic group and a wax grafted portion and (2) a mixture of a polymer having an anionic group and a polymer having a wax grafted portion. The magnetic powder is contained in the toner particles at a proportion ranging between 0.1 and 5 parts by weight per 100 parts by weight of the binder resin.

摘要翻译： 本发明提供了一种用于含有分散在粘合剂树脂中的粘合剂树脂和磁性粉末的调色剂颗粒的双组分型显影剂的调色剂。 调色剂中的粘合剂树脂由以下组合物制备：（1）具有阴离子基团的聚合物和蜡接枝部分中的至少一种，和（2）具有阴离子基团的聚合物和具有蜡接枝的聚合物的混合物 一部分。 相对于100重量份的粘合剂树脂，磁性粉末以0.1至5重量份的比例包含在调色剂颗粒中。