公开(公告)号：US07309554B2

公开(公告)日：2007-12-18

申请号：US10892826

申请日：2004-07-15

申请人： Nobuhiro Miyakawa

发明人： Nobuhiro Miyakawa

IPC分类号： G03G9/00

CPC分类号： G03G9/09716 ,  G03G9/09708 ,  G03G9/09725

摘要： A negatively chargeable toner containing: resin particles containing a colorant; and an external additive which coats the surface of the resin particles, wherein the external additive contains; first silica particles having a number mean primary particle size of 5 to 20 nm and second silica particles having a number mean primary particle size of 30 to 50 nm; surface-modified silica particles which are surface modified by wet treatment using an oxide or hydroxide of at least one metal selected from the group consisting of titanium, tin, zirconium and aluminum, and are further subjected to hydrophobic treatment; and aluminum oxide-silicon dioxide composite oxide particles obtained by flame hydrolysis and hydrophobic treatment.

摘要翻译： 一种带负电荷的调色剂，含有：含有着色剂的树脂颗粒; 以及涂覆树脂颗粒表面的外部添加剂，其中外部添加剂含有; 第一二氧化硅粒子的数均分子一次粒径为5〜20nm，第二二氧化硅粒子的数均分子一次粒径为30〜50nm; 通过使用选自钛，锡，锆和铝的至少一种金属的氧化物或氢氧化物进行湿处理进行表面改性的表面改性二氧化硅颗粒，并进一步进行疏水处理; 和通过火焰水解和疏水处理获得的氧化铝 - 二氧化硅复合氧化物颗粒。

公开(公告)号：US20070141504A1

公开(公告)日：2007-06-21

申请号：US11447481

申请日：2006-06-05

申请人： Nobuhiro Miyakawa

发明人： Nobuhiro Miyakawa

IPC分类号： G03G9/125

CPC分类号： G03G9/122 ,  G03G9/125 ,  G03G9/1355

摘要： The invention provides a liquid developer using a vegetable oil as a carrier solution, wherein a coloring agent for the carrier solution includes a benzimidazole pigment represented by chemical formula 1 and is positively chargeable. Here R1 is OCH3, COOCH3 or COOC4H9(n), R2 is NO2, H, CONHC6H5 or SO2NHR where R is an alkyl group represented by CnH2n+1 provided that n is an integer of 1 to 4, and R3 is H, CH3 or OCH3.

摘要翻译： 本发明提供了使用植物油作为载体溶液的液体显影剂，其中载体溶液用着色剂包括由化学式1表示的苯并咪唑颜料，并且是可带正电荷的。 这里R1是OCH 3，COOCH 3或COOC 4 H 9（n），R 2是NO _{2，H，CONHC 6 H 5或SO 2 NHR，其中R是由C 1 -C 6表示的烷基， 只要n为1〜4的整数，R 3为H，CH 3或OCH 3，则N 2n + 1 < >。}

公开(公告)号：US07190928B2

公开(公告)日：2007-03-13

申请号：US10762497

申请日：2004-01-23

申请人： Nobuhiro Miyakawa ,  Mikio Furumizu

发明人： Nobuhiro Miyakawa ,  Mikio Furumizu

IPC分类号： G03G15/01

CPC分类号： G03G15/0131 ,  G03G15/1685 ,  G03G2221/0005

摘要： The invention provides an image-forming apparatus comprising: at least one latent image holding member on which an electrostatic latent image is to be formed; developing devices having toners of different colors for developing the electrostatic latent image on the latent image holding member to form a toner image; and an intermediate transfer medium onto which the thus formed toner image is to be transferred, wherein the intermediate transfer medium has a work function smaller than or equal to the work function of each of the toners.

摘要翻译： 本发明提供了一种图像形成装置，包括：至少一个潜像保持部件，其上将形成静电潜像; 具有不同颜色的调色剂的显影装置，用于在潜像保持构件上显影静电潜像以形成调色剂图像; 以及其中将如此形成的调色剂图像转印到其上的中间转印介质，其中中间转印介质具有小于或等于每种调色剂的功函数的功函数。

公开(公告)号：US20060275680A1

公开(公告)日：2006-12-07

申请号：US11505372

申请日：2006-08-17

申请人： Nobuhiro Miyakawa

发明人： Nobuhiro Miyakawa

IPC分类号： G03G15/01

CPC分类号： G03G9/09 ,  G03G9/0926 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/09791 ,  G03G15/0121 ,  G03G2215/0119

摘要： The present invention provides toners of different colors in which coloring agents of at least four unicolors are internally added to, respectively, and hydrophobic silica particles and metallic soap particles are externally added to toner mother particles, wherein color superposition of the toners is conducted during development of latent images on a latent image carrier or during transfer to a recording medium after the development, being characterized in that the difference (absolute value) between the work functions of two of said toners is 0.02 eV or more, the color superposition is conducted with the toners sequentially from the toner having the largest work function in descending order of work function of the toners, and the difference (absolute value) between the work function of the toner mother particles and the work function of the metallic soap particles is 0.15 eV or less, thereby improving the transfer efficiency, enabling the extreme reduction in amount of waste toner, and enabling the reduction in apparatus size, and provides a production method of the toners and an image forming apparatus employing the toners.

摘要翻译： 本发明提供了不同颜色的调色剂，其中分别内部添加至少四个单异氰酸酯的着色剂，并将疏水性二氧化硅颗粒和金属皂颗粒外部添加到调色剂母颗粒中，其中调色剂在显影过程中进行颜色叠加 在潜像载体上或在显影后转印到记录介质中的潜像的特征在于，两个所述调色剂的功函数之间的差（绝对值）为0.02eV或更大，颜色叠加是用 调色剂从功能函数最大的调色剂顺序排列，调色剂母粒的功函数与金属皂颗粒的功函数之差（绝对值）为0.15eV或 更少，从而提高转印效率，能够极大地减少废粉量，a 并且能够减少设备尺寸，并且提供了调色剂的制造方法和使用调色剂的成像设备。

公开(公告)号：US07022447B2

公开(公告)日：2006-04-04

申请号：US10651022

申请日：2003-08-29

申请人： Nobuhiro Miyakawa

发明人： Nobuhiro Miyakawa

IPC分类号： G03G9/08

CPC分类号： G03G9/09708 ,  G03G9/09725 ,  G03G2215/0132

摘要： The present invention provides a toner which ensures large mean charging amount and excellent transfer efficiency with no or little amount of reversely charged toner and provides an image forming apparatus using the same. The toner is produced by adding external additives to resin particles containing a coloring agent, wherein the external additives are silica particles and modified silica particles of which outer surfaces are modified with oxide or hydroxide of at least one metal selected from a group consisting of titanium, tin, zirconium, and aluminum, the amount of the modified silica particles being 1.5 times or less of the amount the silica particles. The image forming apparatus uses the toner.

摘要翻译： 本发明提供了一种调色剂，其确保了大的平均充电量和优异的转印效率，而没有或少量的带反色电荷的调色剂，并提供了使用该调色剂的图像形成装置。 该调色剂通过向含有着色剂的树脂颗粒中添加外部添加剂而制备，其中外部添加剂是二氧化硅颗粒和改性二氧化硅颗粒，其外表面用至少一种选自钛， 锡，锆和铝，改性二氧化硅粒子的量为二氧化硅粒子的1.5倍以下。 图像形成装置使用调色剂。

公开(公告)号：US20050095040A1

公开(公告)日：2005-05-05

申请号：US10956355

申请日：2004-09-30

申请人： Shinji Yasukawa ,  Nobuhiro Miyakawa ,  Hiroshi Toyama ,  Takeshi Kobayashi ,  Shoji Hiruta

发明人： Shinji Yasukawa ,  Nobuhiro Miyakawa ,  Hiroshi Toyama ,  Takeshi Kobayashi ,  Shoji Hiruta

IPC分类号： G03G15/06 ,  G03G15/08

CPC分类号： G03G15/0806 ,  G03G15/065 ,  G03G2215/0634

摘要： An electrostatic latent image is formed on an image carrier. A first roller is opposed to the image carrier with a gap in between. A second roller is in contact with the first roller such that toner of a one-component type is supplied onto the image carrier by way of the first roller to develop the electrostatic latent image as a visible toner image. A single power source supplies a bias voltage in which an AC voltage is superposed on a DC bias voltage. The bias voltage is supplied to the first roller through a first path and to the second roller through a second path. A resistor is provided on the first path between the first roller and a branching point of the first path and the second path.

摘要翻译： 在图像载体上形成静电潜像。 第一辊与图像载体相对，间隔开。 第二辊与第一辊接触，使得通过第一辊将单组分类型的调色剂供应到图像载体上，以将静电潜像显影为可见的调色剂图像。 单个电源提供偏置电压，其中AC电压叠加在DC偏置电压上。 偏压通过第一路径提供给第一辊，并通过第二路径被供给到第二辊。 电阻器设置在第一路径与第一路径和第二路径的分支点之间的第一路径上。

公开(公告)号：US06829454B2

公开(公告)日：2004-12-07

申请号：US10224578

申请日：2002-08-21

申请人： Nobuhiro Miyakawa ,  Shinji Yasukawa ,  Nobumasa Abe ,  Mikio Furumizu

发明人： Nobuhiro Miyakawa ,  Shinji Yasukawa ,  Nobumasa Abe ,  Mikio Furumizu

IPC分类号： G03G1500

CPC分类号： G03G15/75 ,  G03G13/08 ,  G03G15/1605 ,  G03G2215/0119 ,  G03G2215/0617

摘要： By causing the movement of charge from a toner to a latent image carrier, the amount of charge of the toner is lowered to an amount of charge suitable for facilitating the transfer of toner so as to improve the transfer efficiency. For this, an image forming apparatus includes a latent image carrier and a developing means for forming a negatively chargeable toner layer compose of two stories or less on a toner carrier by a toner layer thickness regulating member. An electrostatic latent image on the latent image carrier is developed with the toner to form a visible image and the visible image is transferred to a transfer medium. Further, the work functions (&PHgr;opc) of the surface of the latent image carrier is set to be larger than the work function (&PHgr;t) of the toner.

摘要翻译： 通过使电荷从调色剂移动到潜像载体，调色剂的电荷量降低到适于促进调色剂转印的电荷量，从而提高转印效率。 为此，图像形成装置包括潜像载体和用于通过调色剂层厚度调节构件在调色剂载体上形成两层或更少层的负电荷调色剂层的显影装置。 潜像载体上的静电潜像用调色剂显影以形成可见图像，并将可见图像转印到转印介质上。 此外，潜像载体的表面的功函数（Phiopc）被设定为大于调色剂的功函数（Phit）。

公开(公告)号：USRE32466E

公开(公告)日：1987-07-28

申请号：US880431

申请日：1986-06-30

申请人： Nobuhiro Miyakawa

发明人： Nobuhiro Miyakawa

IPC分类号： B41M5/30

CPC分类号： B41M5/30 ,  Y10S428/913 ,  Y10T428/25

摘要： Disclosed is a heat-sensitive color-forming recording material which comprises a recording layer comprising a particulate phenolic color developer and a particulate leuco pigment, which are dispersed in a binder independently from each other, wherein the phenolic color developer and/or leuco pigment is present in the form of compatible solid particles with a substantially inactive organic solid medium having a melting or softening point lower than that of the phenolic color developer and/or leuco pigment and said organic solid medium is present in said compatible solid particles in an amount .[.2 to 250 times as large as.]. .Iadd.of 0.2 to 250% by weight, based on .Iaddend.the amount of the phenolic color developer and/or leuco pigment on the weight base. This heat-sensitized color-forming recording material is highly sensitive without substantial increase of the fog density.

公开(公告)号：US4592643A

公开(公告)日：1986-06-03

申请号：US716996

申请日：1985-03-28

申请人： Teruaki Higashiguchi ,  Nobuhiro Miyakawa ,  Koji Yano ,  Kazuo Yamamoto ,  Yoshinobu Kawakami

发明人： Teruaki Higashiguchi ,  Nobuhiro Miyakawa ,  Koji Yano ,  Kazuo Yamamoto ,  Yoshinobu Kawakami

IPC分类号： G03G15/04

CPC分类号： G03G15/04 ,  G03G15/0435

摘要： In a copying machine comprising a photosensitive drum having an amorphous silicon type photoconductive layer, if an image of an original is focussed on the photoconductive layer with a light having a wavelength shorter than 600 nm, the light fatigue of the amorphous silicon photoconductive layer is prevented, and the image memory phenomenon owing to the light fatigue is effectively obviated.

摘要翻译： 在包括具有非晶硅型光电导层的感光鼓的复印机中，如果用波长短于600nm的光将原稿的图像聚焦在光电导层上，则防止非晶硅光电导层的光疲劳 ，并且由于轻度疲劳引起的图像记忆现象被有效地消除。

公开(公告)号：US4500897A

公开(公告)日：1985-02-19

申请号：US509067

申请日：1983-06-29

申请人： Masanori Matsuda ,  Haruo Koyama ,  Nobuhiro Miyakawa

发明人： Masanori Matsuda ,  Haruo Koyama ,  Nobuhiro Miyakawa

IPC分类号： B41M5/323 ,  B41M5/30 ,  B41M5/327 ,  C09B11/00 ,  C09B11/28 ,  B41M5/18 ,  B41M5/22

CPC分类号： B41M5/327 ,  B41M5/3275

摘要： Disclosed is a heat-sensitive recording element capable of forming an image of a hue close to a pure black at a low density, which comprises a dispersion of a leuco dye, a heat-fusible organic acidic substance solid at normal temperature and a sensitizing agent in a binder, wherein the leuco dye comprises a fluoran type leuco dye for forming a black color and a rhodamine lactam type leuco dye for forming a red dye in an amount of 1.5 to 30% by weight based on said black color-forming leuco dye.

摘要翻译： 公开了一种能够以低密度形成接近纯黑色调的色相的热敏记录元件，其包括常温下的无色染料，热熔性有机酸性物质固体的分散体和敏化剂 在粘合剂中，其中无色染料包含用于形成黑色的荧光型无色染料和用于形成基于所述黑色成色无色染料的1.5至30重量％的红染料的罗丹明内酰胺型无色染料 。