公开(公告)号：US5512406A

公开(公告)日：1996-04-30

申请号：US321903

申请日：1994-10-12

申请人： Kenichi Takeda ,  Tatsuya Tada ,  Nobuyuki Itoh ,  Masao Nakano ,  Kazuhisa Kemmochi ,  Isami Itoh

发明人： Kenichi Takeda ,  Tatsuya Tada ,  Nobuyuki Itoh ,  Masao Nakano ,  Kazuhisa Kemmochi ,  Isami Itoh

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/09725 ,  G03G9/0819 ,  G03G9/097 ,  G03G9/09708

摘要： A toner for electrophotography, comprising toner particles and an additive, is obtained by mixing toners A and B together which are obtained by respectively adding the additive to each of at least two toner particle groups (a) and (b) having different particle size distributions. The average particle size of the toner particle group (a) is smaller than that of the toner particle group (b), and the amount of additive in the toner A is larger than that in the toner B. The toner reduces the differences in development conditions between different particle sizes due to broadening of toner particle size distribution, thereby enabling a stable image quality to be obtained which maintains a high image density for an extended period of time and is relatively free from fog generation in non-image portions.

摘要翻译： 通过将调色剂A和B混合在一起，通过将添加剂分别添加到具有不同粒度分布的至少两个调色剂颗粒组（a）和（b）中的每一个而获得的电子照相用调色剂， 。 调色剂颗粒组（a）的平均粒径小于调色剂颗粒组（b）的平均粒径，并且调色剂A中的添加剂的量大于调色剂B中的添加剂的量。调色剂减少了显影的差异 由于调色剂粒度分布的变宽，不同粒径之间的条件，从而能够获得稳定的图像质量，其在长时间内保持高图像密度，并且在非图像部分中相对不产生雾。

公开(公告)号：US5781836A

公开(公告)日：1998-07-14

申请号：US755598

申请日：1996-11-25

申请人： Tatsuya Tada ,  Isami Itoh

发明人： Tatsuya Tada ,  Isami Itoh

IPC分类号： G03G15/09

CPC分类号： G03G15/09

摘要： A developing device for an image forming apparatus such as a copying machine, a printer, or the like to develop an electrostatic latent image on an image carrier includes a toner carrier which moves while carrying a toner on its surface, and a regulating member for regulating the amount of toner on the toner carrier by applying a moving force to the toner in a direction opposite to the moving direction of the toner carrier. In a regulating portion defined by the regulating member, a convey force received by a toner portion, which does not contact the surface of the toner carrier, from the regulating member is larger than a convey force received from the toner carrier.

摘要翻译： 用于在诸如复印机，打印机等的图像形成装置的显影装置中，用于在图像载体上显影静电潜像包括在其表面上承载调色剂的同时移动的调色剂载体和用于调节 通过在与调色剂承载件的移动方向相反的方向上向调色剂施加移动力来调色剂载体上的调色剂量。 在由调节构件限定的调节部分中，由调色剂部分接收的不与调色剂承载器表面接触的输送力与调色剂承载体的输送力相比大。

公开(公告)号：US5523533A

公开(公告)日：1996-06-04

申请号：US250682

申请日：1994-05-26

申请人： Isami Itoh ,  Tatsuya Tada

发明人： Isami Itoh ,  Tatsuya Tada

IPC分类号： G03G15/09

CPC分类号： B82Y15/00 ,  G03G15/09

摘要： A developing device including a developing agent container for storing a developing agent composed of toner particles and magnetic carrier particles, a toner carrier for carrying and conveying the toner particles to supply the toner particles to an image carrier for carrying an electrostatic image, and a developing agent regulating rotary member, disposed adjacent the toner carrier with a gap therebetween, for forming a brush of the magnetic carrier particles by a magnetic force between itself and the toner carrier. The regulating rotary member allows only the toner to pass therethrough without substantially allowing passage of the carrier.

摘要翻译： 一种显影装置，包括用于存储由调色剂颗粒和磁性载体颗粒组成的显影剂的显影剂容器，用于承载和输送调色剂颗粒以将调色剂颗粒供应到用于承载静电图像的图像载体的调色剂载体，以及显影剂 代理调节旋转构件，其间设置有邻近调色剂载体的间隙，用于通过其自身与调色剂载体之间的磁力形成磁性载体颗粒的刷子。 调节旋转构件仅允许调色剂通过，而基本上不允许载体通过。

公开(公告)号：USRE38026E1

公开(公告)日：2003-03-11

申请号：US09963853

申请日：2001-09-27

申请人： Tatsuya Tada ,  Isami Itoh

发明人： Tatsuya Tada ,  Isami Itoh

IPC分类号： G03G1509

CPC分类号： G03G15/09

摘要： A developing device for an image forming apparatus such as a copying machine, a printer, or the like to develop an electrostatic latent image on an image carrier includes a toner carrier which moves while carrying a toner on its surface, and a regulating member for regulating the amount of toner on the toner carrier by applying a moving force to the toner in a direction opposite to the moving direction of the toner carrier. In a regulating portion defined by the regulating member, a convey force received by a toner portion, which does not contact the surface of the toner carrier, from the regulating member is larger than a convey force received from the toner carrier.

摘要翻译： 用于在诸如复印机，打印机等的图像形成装置的显影装置中，用于在图像载体上显影静电潜像包括在其表面上承载调色剂的同时移动的调色剂载体和用于调节 通过在与调色剂承载件的移动方向相反的方向上向调色剂施加移动力来调色剂载体上的调色剂量。 在由调节构件限定的调节部分中，由调色剂部分接收的不与调色剂承载器表面接触的输送力与调色剂承载体的输送力相比大。

公开(公告)号：US5754929A

公开(公告)日：1998-05-19

申请号：US748615

申请日：1996-11-13

申请人： Makoto Nonomura ,  Tatsuya Tada ,  Isami Itoh ,  Takeshi Yamamoto

发明人： Makoto Nonomura ,  Tatsuya Tada ,  Isami Itoh ,  Takeshi Yamamoto

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/09

摘要： A development apparatus having a development sleeve for carrying and transporting a magnetic developer, a regulating roll for controlling the thickness of a layer of the developer on the development sleeve, a first magnetic pole provided in the development sleeve in the vicinity of a position of layer thickness control by the regulating roll, a second magnetic pole provided in the regulating roll to form a magnetic field for restraining the developer in cooperation with the first magnetic pole. The first and second magnetic poles are provided on the upstream side of a straight line connecting a center of the development sleeve and a center of the regulating roll in the direction of transport of the developer by the development sleeve so that the following inequalities are satisfied: 0

摘要翻译： 具有用于承载和运送磁性显影剂的显影套筒的显影装置，用于控制显影套筒上的显影剂层的厚度的调节辊，设置在显影套筒中的层的位置附近的第一磁极 通过调节辊的厚度控制，设置在调节辊中的第二磁极，以形成用于与第一磁极配合地限制显影剂的磁场。 第一和第二磁极设置在连接显影套筒的中心和调节辊的中心的直线的上游侧，该显影套筒由显影套筒输送显影剂的方向，使得满足以下不等式： 其中α是第一磁极的磁通密度分布的半值宽度的角度，其中α是第一磁极的磁通密度分布的半值宽度的角度;其中α是第一磁极的磁通密度分布的半值宽度的角度; θ是直线与连接第一磁极和显影套筒中心的线之间的角度; phi是直线与连接第二磁极和调节辊的中心的线之间的角度; r是调节辊的半径; 而R是开发套的半径。

公开(公告)号：US5517286A

公开(公告)日：1996-05-14

申请号：US187872

申请日：1994-01-28

申请人： Tatsuya Tada ,  Isami Itoh

发明人： Tatsuya Tada ,  Isami Itoh

IPC分类号： G03G15/09

CPC分类号： G03G15/09 ,  G03G2215/0614

摘要： A stationary magnet is disposed in a developing sleeve for carrying a one component magnetic developer. A regulating sleeve for regulating a layer of the developer is disposed opposed to the developing sleeve. The regulating sleeve rotates in the same direction as the developing sleeve. In the regulating sleeve, there is disposed a magnet or magnetic member cooperative with the stationary magnet to form a magnetic field in a gap between the developing sleeve and the regulating sleeve.

摘要翻译： 固定磁体设置在用于承载单组分磁性显影剂的显影套筒中。 用于调节显影剂层的调节套筒设置成与显影套筒相对。 调节套筒沿与显影套筒相同的方向旋转。 在调节套筒中，设置有与固定磁体协作的磁体或磁性构件，以在显影套筒和调节套筒之间的间隙中形成磁场。

公开(公告)号：US5464720A

公开(公告)日：1995-11-07

申请号：US059993

申请日：1993-05-12

申请人： Yoshinobu Baba ,  Tatsuya Tada

发明人： Yoshinobu Baba ,  Tatsuya Tada

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G13/09 ,  G03G13/26 ,  G03G15/08

CPC分类号： G03G13/09 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/083 ,  G03G9/0835 ,  G03G9/0838

摘要： An image forming method is disclosed which comprises forming a latent image on a latent image bearing member, carrying a magnetic toner onto a developer carrying member provided with a magnetic field forming means, forming on the developer carrying member a layer of the magnetic toner, and developing the latent image while transferring the magnetic toner to the latent image bearing member. The magnetic toner contains a magnetic material having an intensity of magnetization of from 10 emu/g to 40 emu/g in a magnetic field of 1K oersted and formed of a metal oxide having a horizontal direction Feret's diameter of from 0.05 .mu.m to 0.5 .mu.m, and chainlike masses of the magnetic toner, formed on the developer carrying member, are in a density of not less than 8.times.10.sup.4 ears/cm.sup.2 in a developing zone formed between the latent image bearing member and developer carrying member. The chainlike masses each have a length of not more than 180 .mu.m, and when the weight average particle diameter of the magnetic toner is r (.mu.m) and the true density thereof is .rho. (g/cm.sup.3), the magnetic toner on the developer carrying member in the developing zone is in a quantity of not less than 0.06.times.r.times..rho. mg/cm.sup.2. Also, an image forming apparatus is disclosed.

摘要翻译： 公开了一种图像形成方法，其包括在潜像承载部件上形成潜像，将磁性调色剂携带在具有磁场形成装置的显影剂承载部件上，在显影剂承载部件上形成一层磁性调色剂，以及 在将磁性调色剂转移到潜像承载部件的同时显影潜像。 磁性调色剂在1K的磁场中含有具有10emu / g至40emu / g的磁化强度的磁性材料，并且由水平方向Feret直径为0.05μm至0.5μm的金属氧化物形成 m和形成在显影剂承载构件上的磁性调色剂的链状质量在形成在潜像承载构件和显影剂承载构件之间的显影区中的密度不小于8×10 4耳/ cm 2。 链状质量各自具有不大于180μm的长度，并且当磁性调色剂的重均粒径为r（μm）且真实浓度为rho（g / cm 3）时，磁性调色剂在 在显影区中的显影剂承载构件的量不小于0.06xrx rho / cm 2。 此外，公开了一种图像形成装置。

公开(公告)号：US4985823A

公开(公告)日：1991-01-15

申请号：US401623

申请日：1989-08-31

申请人： Tatsuya Tada ,  Yasuyoshi Yamamoto

发明人： Tatsuya Tada ,  Yasuyoshi Yamamoto

IPC分类号： G03G15/08

CPC分类号： G03G15/0849 ,  G03G15/0855 ,  G03G15/0893

摘要： An image-forming apparatus for developing an electrostatic latent image using a two-component developer. Toner replenishment is effected in different modes when the toner concentration is in a lower toner concentration range than a desired toner concentration and when it is lower than that toner concentration range.

公开(公告)号：US4942431A

公开(公告)日：1990-07-17

申请号：US398444

申请日：1989-08-25

申请人： Tatsuya Tada

发明人： Tatsuya Tada

IPC分类号： G03G15/08

CPC分类号： G03G15/0849 ,  G03G15/0862 ,  G03G15/0893

摘要： An image forming apparatus includes an image bearing member; a latent image forming device for forming a latent image on the image bearing member; a developing device for developing the latent image, including, a developer container for containing a developer including carrier and toner particles, a toner container for containing the toner particles, a toner supply device for supplying the toner particles from the toner container to the developer container, a developer carrying member for carrying on its surface the developer supplied from the developer container, a sensor for detecting a toner content in the developer; a control device for controlling the toner supply from the toner container to the developer container on the basis of an output of the sensor, wherein when a toner supply signal is not produced within a predetermined period of time, a predetermined latent image is formed on the image bearing member, and the predetermined latent image is developed by the developing device.

公开(公告)号：US4777512A

公开(公告)日：1988-10-11

申请号：US939866

申请日：1986-12-09

申请人： Masayoshi Takahashi ,  Nobutoshi Yoshida ,  Ikumi Omura ,  Tatsuya Tada

发明人： Masayoshi Takahashi ,  Nobutoshi Yoshida ,  Ikumi Omura ,  Tatsuya Tada

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/50 ,  G03G15/0849 ,  G03G15/0893

摘要： An image forming apparatus using two component developer. When a toner content in the developer becomes out of a predetermined range as a result of the consumption of the toner, a control device effects a toner replenishing operation, and simultaneously, the image forming operation is substantially delayed.

摘要翻译： 一种使用双组分显影剂的成像装置。 当显影剂中的调色剂含量由于调色剂的消耗而变得超出预定范围时，控制装置进行调色剂补充操作，同时，成像操作大大延迟。