公开(公告)号：US4416964A

公开(公告)日：1983-11-22

申请号：US296505

申请日：1981-08-26

申请人： Nobuhiro Miyakawa ,  Takashi Teshima ,  Haruo Koyama ,  Kouji Maekawa ,  Masanori Fujii

发明人： Nobuhiro Miyakawa ,  Takashi Teshima ,  Haruo Koyama ,  Kouji Maekawa ,  Masanori Fujii

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/00

CPC分类号： G03G9/0835 ,  G03G9/0837 ,  G03G9/0838

摘要： Disclosed is a dry magnetic developer consisting essentially of a particulate shaped article of a composition comprising a binder resin medium and a powdery magnetic material dispersed in the binder resin medium, wherein said composition is composed of a non-pulverizing agglomerate of cubic particles, and particles having a number average particle size of 1 to 10 microns, as measured by an electron microscope, are incorporated as the powdery magnetic material.This magnetic developer is excellent in the image sharpness, the resolving power and the half tone-reproducing property, and is especially effective for developing a positively charged latent image which is formed on a p-type photosensitive plate such as a selenium photosensitive plate or a photosensitive plate comprising an organic photoconductor layer.

摘要翻译： 公开了一种干磁性显影剂，其基本上由包含分散在粘合剂树脂介质中的粘合剂树脂介质和粉末状磁性材料的组合物的颗粒成型制品组成，其中所述组合物由立方颗粒的非粉碎附聚物和颗粒 通过电子显微镜测量的数均粒径为1至10微米，作为粉末状磁性材料。 该磁性显影剂的图像清晰度，分辨率和半色调再现性能优异，并且对于形成在诸如硒感光板或p型感光板的p型感光板上形成带正电的潜像特别有效 包含有机光电导体层的感光板。

公开(公告)号：US4576888A

公开(公告)日：1986-03-18

申请号：US583425

申请日：1984-02-24

申请人： Nobuhiro Miyakawa ,  Kouji Maekawa ,  Teruaki Higashiguchi ,  Kaname Nakatani

发明人： Nobuhiro Miyakawa ,  Kouji Maekawa ,  Teruaki Higashiguchi ,  Kaname Nakatani

IPC分类号： G03G9/08 ,  C09B69/00 ,  G03G9/09 ,  G03G9/097

CPC分类号： C09B69/008 ,  G03G9/09 ,  G03G9/091 ,  G03G9/097 ,  Y10T428/2995

摘要： A toner for electrophotography, comprising an azoic pigment having a silica core as a coloring component, said azoic pigment comprising a core of a fine powder of silica and a coating of a mono- or polyazoic dye chemically bound to the surface of the silica core through an aminosilane coupling agent.

摘要翻译： 一种用于电子照相的调色剂，包括具有二氧化硅核心作为着色组分的偶氮颜料，所述偶氮颜料包含二氧化硅细粉末的核心和通过化学键合到二氧化硅核芯表面的单或多氮染料的涂层 氨基硅烷偶联剂。

公开(公告)号：US4530893A

公开(公告)日：1985-07-23

申请号：US556193

申请日：1983-11-29

申请人： Kouji Maekawa ,  Nobuhiro Miyakawa

发明人： Kouji Maekawa ,  Nobuhiro Miyakawa

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

CPC分类号： G03G9/08 ,  G03G9/0833 ,  G03G9/091 ,  Y10S430/104

摘要： Disclosed is a one-component type red color magnetic developer having a self-electroscopic property, which comprises particles prepared from a kneaded composition comprising 100 parts by weight of a magnetic powder composed mainly of ocherous gamma-type diiron trioxide, 2.5 to 30 parts by weight of a red azo pigment and 40 to 200 parts by weight of a binder resin, wherein a fixed image of the particles is measured by a color difference meter, the value x is from 0.51 to 0.73, the value y is from 0.22 to 0.40 and the value Y is from 5 to 65%.

摘要翻译： 公开了具有自电性的单组分型红色磁性显影剂，其包含由捏合组合物制备的颗粒，所述混合组合物包含主要由肟型γ-型三氧化二铁组成的磁性粉末100重量份，2.5至30重量份 红色偶氮颜料的重量和40〜200重量份的粘合剂树脂，其中通过色差计测量颗粒的固定图像，值x为0.51至0.73，值y为0.22至0.40 值Y为5〜65％。

公开(公告)号：US4826750A

公开(公告)日：1989-05-02

申请号：US102679

申请日：1987-09-30

申请人： Mamoru Kato ,  Kouji Maekawa ,  Kenichi Matsunobu ,  Naoka Fujie ,  Hiroyuki Hazama

发明人： Mamoru Kato ,  Kouji Maekawa ,  Kenichi Matsunobu ,  Naoka Fujie ,  Hiroyuki Hazama

IPC分类号： G03G9/09 ,  G03G9/10 ,  G03G13/08 ,  G03G15/08 ,  G03G13/09

CPC分类号： G03G9/0904 ,  G03G13/08 ,  G03G15/0855 ,  G03G15/5041

摘要： A two-component type developer comprising an electroscopic fixable toner containing, as the coloring pigment, carbon black having a coloring power of 100 to 120 and a magnetic carrier is sued for developing electrostatic latent images formed on a photosensitive plate in correspondence to an imitation original and an original, and the image density of the toner image corresponding to the imitation original is detected and the toner concentration in the developer is controlled based on the detected image density. According to this development process, the toner concentration in the developer can be maintained within an optimum range based on the optical density of the toner image formed on the photosensitive plate in correspondence to the imitation original.

摘要翻译： 一种双组分型显影剂，其包含电致可固定的调色剂，其包含着色颜料，着色力为100至120的炭黑和磁性载体用于显影形成在感光板上的静电潜像，对应于仿制原件 和原稿，并且检测对应于仿制原件的调色剂图像的图像浓度，并且基于检测到的图像浓度来控制显影剂中的调色剂浓度。 根据该显影处理，显影剂中的调色剂浓度可以基于与仿制原件对应的感光板上形成的调色剂图像的光密度而保持在最佳范围内。

公开(公告)号：US4633808A

公开(公告)日：1987-01-06

申请号：US726354

申请日：1985-04-23

申请人： Kouji Maekawa

发明人： Kouji Maekawa

IPC分类号： G03G13/09 ,  G03G15/09 ,  G03G13/08

CPC分类号： G03G15/0921 ,  G03G15/09

摘要： A developing process for electrophotography comprising: (1) feeding a developer to a non-magnetic sleeve, said developer consisting of an insulative and non-magnetic toner charged with an electrical polarity and a magnetic carrier, (2) maintaining said developer on the sleeve, (3) removing said carrier from said developer on the sleeve to leave said non-magnetic toner on the sleeve, and (4) transferring said non-magnetic toner from the sleeve to an electrostatic latent image on the surface of a photoreceptor.

摘要翻译： 一种用于电子照相术的显影方法，包括：（1）将显影剂供给非磁性套筒，所述显影剂由带有电极性和磁性载体的绝缘和非磁性调色剂组成，（2）将所述显影剂保持在套筒 （3）将所述载体从套筒上的显影剂中取出以将所述非磁性调色剂留在套筒上，和（4）将所述非磁性调色剂从套筒转印到感光体表面上的静电潜像上。

公开(公告)号：US4524117A

公开(公告)日：1985-06-18

申请号：US621090

申请日：1984-06-15

申请人： Kouji Maekawa ,  Mamoru Kato ,  Syoji Nakagama ,  Yumiko Sano

发明人： Kouji Maekawa ,  Mamoru Kato ,  Syoji Nakagama ,  Yumiko Sano

IPC分类号： G03G13/01 ,  G03G15/01

CPC分类号： G03G13/01

摘要： An electrophotographic method for the formation of two-colored images comprising: (1) uniformly charging the surface of a photoreceptor having a conductive substance and a photoconductive layer formed on the conductive substance, said photoconductive layer being sensitive to a first color, (2) exposing a two-colored original, to form on said photoconductive layer an electrostatic latent image, which corresponds to a second color region in the original, with the same polarity as the electric charges on the surface of said photoconductive layer, (3) subjecting the surface of said photoreceptor to a reversal development treatment by the use of a photoconductive color toner charged with the same polarity as the electric charges constituting said electrostatic latent image, to develop the non-charged region with the photoconductive color toner, (4) subjecting said electrostatic latent image to a normal development treatment by the use of an insulative toner having a color different from the color of said photoconductive color toner, and (5) charging the color toners on said photoconductive layer with a different polarity from the charging polarity in process (1) and simultaneously exposing said original through a filter shielding against said first color, thereby providing a practical method for the formation of a desired two colored distinct image corresponding to the original.

摘要翻译： 一种用于形成双色图像的电子照相方法，包括：（1）对形成在导电物质上的导电物质和光电导层的感光体的表面进行均匀充电，所述光电导层对第一种颜色敏感，（2） 暴露双色原件，在所述光电导层上形成与原始图案中的第二颜色区域相对应的静电潜像，其极性与所述光电导层的表面上的电荷相同，（3）使 所述感光体的表面通过使用与构成所述静电潜像的电荷具有相同极性的感光色调色剂进行反转显影处理，利用光电导色调色剂显影未带电区域，（4）使所述 静电潜像通过使用具有不同颜色的绝缘调色剂进行正常显影处理 所述感光色调色剂的颜色，以及（5）在所述光电导层上以与处理（1）中的充电极性不同的极性对彩色调色剂进行充电，并且同时使所述原稿通过过滤屏蔽而暴露于所述第一颜色，从而提供实用 用于形成对应于原始的期望的两个彩色不同图像的方法。