公开(公告)号：USRE32330E

公开(公告)日：1987-01-13

申请号：US552868

申请日：1983-11-18

申请人： Seiichi Miyakawa ,  Susumu Tatsumi ,  Koji Sakamoto

发明人： Seiichi Miyakawa ,  Susumu Tatsumi ,  Koji Sakamoto

IPC分类号： G03G15/06

CPC分类号： G03G15/065

摘要： A method of maintaining the correct conditions of an electrophotographically duplicated image, which uses a reference plate having at least a dark-tone area and a light-tone area and in which signals associated with the reference plate are detected and synthesized to control the duplicating process conditions such as developing bias potential, charge, exposure and of the optical system so that an optimum image may be produced.

公开(公告)号：US4251152A

公开(公告)日：1981-02-17

申请号：US948742

申请日：1978-10-05

申请人： Seiichi Miyakawa ,  Takashi Yano

发明人： Seiichi Miyakawa ,  Takashi Yano

IPC分类号： G03G15/00 ,  G03G15/04

CPC分类号： G03G15/04 ,  G03G15/0435

摘要： An apparatus for multi-image formation for use in electrophotography and electrostatic recording to permit the formation of two or more different latent electrostatic images on a dielectric or photoconductive material from different sources and synthesis of each of the different latent electrostatic images with an identical or a different polarity and potential.

摘要翻译： 一种用于电子照相和静电记录的多图像形成装置，以允许在不同来源的电介质或光电导材料上形成两种或更多种不同的静电潜像，并且使用相同或不同的静电图像 不同的极性和潜力。

公开(公告)号：US4226525A

公开(公告)日：1980-10-07

申请号：US843108

申请日：1977-10-18

申请人： Koji Sakamoto ,  Seiichi Miyakawa ,  Susumu Tatsumi

发明人： Koji Sakamoto ,  Seiichi Miyakawa ,  Susumu Tatsumi

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/5037 ,  G03G15/0849 ,  G03G15/0853 ,  Y10S222/01

摘要： An exposure unit radiates a light image of an original document onto a charged photoconductive member to form an electrostatic image through localized photoconduction. A developing unit applies a powdered developing substance comprising carrier particles and toner particles to the photoconductive member to develop the electrostatic image and produce a toner image which is transferred and fixed to a copy sheet to produce a permanent reproduction of the original document. The tone density, or the ratio of toner particles to carrier particles in the developing substance is electromagnetically measured, and the developing ability of the developing substance is opticaly measured. The developing substance is replaced when the difference between the toner density and developing ability exceeds a predetermined value. Prior to exposure with the light image a reference electrostatic image is formed on the photoconductive member and the electrostatic potential thereof is measured. The intensity of the light image of the original document and/or a developing bias voltage are regulated in accordance with the sensed electrostatic potential. The reference image may be of a reference surface having a predetermined optical density or a portion of the original document produced by reverse optical scanning.

摘要翻译： 曝光单元将原稿的光图像照射到带电的光导体上，以通过局部光电导体形成静电图像。 显影单元将包含载体颗粒和调色剂颗粒的粉末显影物质施加到感光体以显影静电图像，并产生转印并固定到复印纸上的调色剂图像，以产生原稿的永久再现。 色调密度或显影物质中调色剂颗粒与载体颗粒的比例被电磁测量，并且显影物质的显影能力被光学测量。 当调色剂浓度和显影能力之间的差异超过预定值时，显影物质被替换。 在用光图像曝光之前，在感光体上形成参考静电图像，并测量其静电电位。 原始文件的光图像的强度和/或显影偏压根据感测到的静电电位来调节。 参考图像可以是具有预定光密度的参考表面或通过反向光学扫描产生的原始文档的一部分。

公开(公告)号：US4194830A

公开(公告)日：1980-03-25

申请号：US946384

申请日：1978-09-26

申请人： Teruyuki Ohnuma ,  Kaoru Shimizu ,  Seiichi Miyakawa ,  Hajime Oyama

发明人： Teruyuki Ohnuma ,  Kaoru Shimizu ,  Seiichi Miyakawa ,  Hajime Oyama

IPC分类号： G03G15/08 ,  G03G15/09 ,  G03G15/00

CPC分类号： G03G15/0812 ,  G03G15/0914 ,  G03G2215/0614 ,  G03G2215/0641

摘要： A development apparatus for developing a latent electrostatic image formed on a photoconductor with a one-component type developer has a charging device comprising at least two charging members for charging the developer held in a developer container. The first charging member serves both as a doctor blade and for regulating the amount of the developer on the development roller, and the second charging member charges the developer before it is charged by the first charging member. In the second charging member, there is formed a hole for allowing the developer to pass therethrough. The developer scraped by the first charging member is returned to the developer container through the hole and part of the scraped developer is carried back to the first charging member, so that a developer circulation path is formed in the charging device. While passing through the developer circulation path, the developer is charged further, whereby the developer is sufficiently charged before it is actually used for development.

摘要翻译： 用单组分型显影剂显影在感光体上形成的静电潜像的显影装置具有充电装置，该充电装置包括至少两个用于对保持在显影剂容器中的显影剂充电的充电构件。 第一充电构件既用作刮刀并用于调节显影辊上的显影剂的量，并且第二充电构件在由第一充电构件充电之前对显影剂充电。 在第二充电构件中，形成有用于使显影剂通过的孔。 由第一充电元件刮下的显影剂通过该孔返回到显影剂容器，并且刮出的显影剂的一部分被带回第一充电元件，从而在充电装置中形成显影剂循环路径。 当通过显影剂循环路径时，显影剂进一步充电，由此显影剂在实际用于显影之前被充分地充电。

公开(公告)号：US4165172A

公开(公告)日：1979-08-21

申请号：US750770

申请日：1976-12-15

申请人： Toyoo Okamoto ,  Toshio Watanabe ,  Akira Midorikawa ,  Tatsuo Tani ,  Seiichi Miyakawa

发明人： Toyoo Okamoto ,  Toshio Watanabe ,  Akira Midorikawa ,  Tatsuo Tani ,  Seiichi Miyakawa

IPC分类号： G03G21/10 ,  G03G21/00

CPC分类号： G03G21/0088

摘要： A spongy roller is rotated so that the surface thereof is pressed against the surface of a photoconductive drum and moves in the opposite direction therefrom. A resilient blade is also pressed against the photoconductive drum downstream of the roller so as to define a trough therebetween into which is supplied a cleaning liquid. The roller and blade remove all residual toner substance from the drum which remains after development and transfer operations. The cleaning liquid is supplied only while the drum is being operatively rotated in a quantity sufficient to wash away substantially all removed toner substance from between the blade and the drum. The roller is large enough to absorb enough cleaning liquid to remain moist and prevent solidification of removed toner substance between the roller and the drum between copying operations and when the apparatus is shut down.

摘要翻译： 海绵状的辊旋转，使得其表面被压靠在感光鼓的表面上并且沿与其反向的方向移动。 弹性叶片也被压在辊子下游的感光鼓上，以便在其间形成一个槽，供给清洗液。 辊子和刀片从显影和转印操作后保留的滚筒中除去所有残留的调色剂物质。 只有在滚筒被可操作地旋转的量时，清洁液才被供应，其量足以从刀片和滚筒之间基本上清除所有去除的调色剂物质。 辊子足够大以吸收足够的清洁液体以保持潮湿，并且防止在复印操作和装置关闭时在辊和滚筒之间移除的调色剂物质的固化。

公开(公告)号：US4139299A

公开(公告)日：1979-02-13

申请号：US671835

申请日：1976-03-30

申请人： Seiichi Miyakawa ,  Susumu Tatsumi

发明人： Seiichi Miyakawa ,  Susumu Tatsumi

IPC分类号： G03G13/10 ,  G03G15/06 ,  G03G15/10

CPC分类号： G03G15/065

摘要： The process and device are for use in an electrophotographic copying machine using a developing agent of liquid type. A counter-electrode is maintained closely spaced from the peripheral surface of a photosensitive drum bearing an electrostatic latent image thereon and itself electrically floating. The developing solution, which inherently has a substantial conductivity is supplied into the space between the drum surface and the counter-electrode so as to develop the latent image. During the development of latent image, a weak d.c. current flow, is passed between the counter-electrode and the drum through the segment of the developing solution filling the space so that a good relation between potentials on the drum surface and the counter-electrode is obtained to eliminate background smearing. The d.c. current may be controlled to decrease in value as the induced potential on the counter-electrode increases.

摘要翻译： 该方法和装置用于使用液体型显影剂的电子照相复印机。 维持与感光鼓的外周表面紧密间隔的对电极，其上具有静电潜像并且其自身电浮动。 固有地具有大量导电性的显影液被提供到鼓表面和对电极之间的空间中，以便显影潜像。 在潜像的发展过程中， 电流通过填充空间的显影液的段在对电极和滚筒之间通过，从而获得鼓表面上的电位与对电极之间良好的关系，以消除背景污迹。 直径 当对电极上的感应电位增加时，电流可以被控制为降低。

公开(公告)号：US4050806A

公开(公告)日：1977-09-27

申请号：US575328

申请日：1975-05-07

申请人： Seiichi Miyakawa ,  Tadahiro Eda

发明人： Seiichi Miyakawa ,  Tadahiro Eda

IPC分类号： G03G15/06 ,  G03G15/00 ,  G03G15/10

CPC分类号： G03G15/065 ,  Y10S101/37

摘要： A photoconductive member is charged and radiated with a light image to produce an electrostatic image. Sensing electrodes automatically sense the remaining potential in a portion of the electrostatic image corresponding to a background area of the original document scanned to produce the light image. In one embodiment the area is a white reference document disposed adjacent to the original document. In another embodiment a reference document is not provided and a plurality of portions of the electrostatic image are sensed. The lowest value of the sensed potential is utilized. Computing means compute and apply the biasing voltage to the developing electrode as a predetermined function of the sensed potential.

摘要翻译： 用光图像对感光体进行充电和照射以产生静电图像。 感测电极自动感测与扫描的原始文档的背景区域相对应的静电图像的一部分中的剩余电位以产生光图像。 在一个实施例中，该区域是与原始文档相邻设置的白色参考文档。 在另一个实施例中，不提供参考文件，并且感测静电图像的多个部分。 利用感测电位的最低值。 计算意味着计算并将偏置电压施加到显影电极作为感测电位的预定函数。

公开(公告)号：US5521679A

公开(公告)日：1996-05-28

申请号：US153968

申请日：1993-11-18

申请人： Seiichi Miyakawa ,  Shigeru Suzuki ,  Kazuaki Iizuka ,  Yoshiyumi Tamiya ,  Kenichi Shimizu ,  Harumitsu Mashiko ,  Takashi Seto ,  Eishu Ohdake ,  Tadahiro Suzuki

发明人： Seiichi Miyakawa ,  Shigeru Suzuki ,  Kazuaki Iizuka ,  Yoshiyumi Tamiya ,  Kenichi Shimizu ,  Harumitsu Mashiko ,  Takashi Seto ,  Eishu Ohdake ,  Tadahiro Suzuki

IPC分类号： G03G15/01 ,  G03G15/10 ,  G03G15/16 ,  G03G15/18 ,  G03G15/05

CPC分类号： G03G15/18

摘要： An image forming apparatus for electrostatically transferring a latent image formed on a photoconductive drum or similar image carrier to a recording medium held by a clamp drum or similar medium conveying member. The clamp drum has a cylinder or base made of aluminum, a conductive rubber layer covering the cylinder, and an overcoat layer covering the rubber layer and higher in electric resistance than the rubber layer. A bias voltage for latent image transfer is applied while the rubber layer is connected to ground. The photoconductive drum and clamp drum are pressed against each other by a predetermined force, the former following the rotation of the latter. The photoconductive drum is provided with a photoconductor having a great electrostatic capacity, thereby preventing the effective transfer voltage at the time of image transfer from increasing.

摘要翻译： 一种用于将形成在感光鼓或类似图像载体上的潜像静电转印到由夹紧滚筒或类似介质传送构件保持的记录介质上的图像形成装置。 夹紧滚筒具有由铝构成的圆筒或基座，覆盖圆筒的导电橡胶层和覆盖橡胶层的外涂层，比橡胶层具有更高的电阻。 当橡胶层连接到地面时，施加用于潜像转印的偏置电压。 感光鼓和夹紧滚筒通过预定的力相互按压，前者随后者转动。 感光鼓设置有具有大静电容量的光电导体，从而防止图像转印时的有效转印电压增加。

公开(公告)号：US5202534A

公开(公告)日：1993-04-13

申请号：US779257

申请日：1991-10-18

申请人： Yoshiumi Tamiya ,  Seiichi Miyakawa ,  Kazuaki Iizuka ,  Kenichi Shimizu ,  Shigeru Suzuki ,  Kiyoshi Ohshima ,  Tadahiro Suzuki

发明人： Yoshiumi Tamiya ,  Seiichi Miyakawa ,  Kazuaki Iizuka ,  Kenichi Shimizu ,  Shigeru Suzuki ,  Kiyoshi Ohshima ,  Tadahiro Suzuki

IPC分类号： G03G15/10

CPC分类号： G03G15/101

摘要： A developing apparatus using a liquid developer and a developing head located to face a path along which a recording medium carrying, for example, an electrostatic latent image thereon is transported. A groove is formed in the surface of the head that faces the transport path. After development, the liquid remaining at the corner defined by the upper inner portion of the groove and the medium is rapidly collected to allow a minimum of smear to occur on the part of the medium which will be transported later. When the transport of the medium should be interrupted during development due to, for example, a jam, the liquid in the groove is collected to prevent a great amount of liquid which would smear a drive roller and other transport members from being transferred from the head to the medium.

摘要翻译： 使用液体显影剂和显影头的显影装置，该显影头位于面向其上运送例如其上的静电潜像的记录介质的路径。 在头部的面向传送路径的表面中形成有凹槽。 在显影之后，由凹槽的上部内部和介质限定的角落处的液体被快速收集，以允许在稍后传送的介质的部分上发生最小的污迹。 当由于例如卡纸而在显影过程中介质的输送应该被中断时，槽中的液体被收集以防止大量的液体，这些液体会污染驱动辊和其它运输构件从头部传递 到中等

公开(公告)号：US5172180A

公开(公告)日：1992-12-15

申请号：US741628

申请日：1991-08-07

申请人： Kiyoshi Ohshima ,  Shigeru Suzuki ,  Yoshiyumi Tamiya ,  Kenichi Shimizu ,  Kazuaki Iizuka ,  Seiichi Miyakawa

发明人： Kiyoshi Ohshima ,  Shigeru Suzuki ,  Yoshiyumi Tamiya ,  Kenichi Shimizu ,  Kazuaki Iizuka ,  Seiichi Miyakawa

IPC分类号： B41J2/525 ,  B41J2/44 ,  B41J15/06 ,  B41J35/18 ,  G03F3/08 ,  G03G15/01 ,  G03G21/00 ,  G06K15/16 ,  H04N1/047 ,  H04N1/10 ,  H04N1/12 ,  H04N1/193 ,  H04N1/50

CPC分类号： G03G15/0142 ,  B41J15/06 ,  B41J35/18 ,  G03G15/0194 ,  G06K15/16 ,  H04N1/0473 ,  H04N1/506 ,  H04N1/1017 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/0471 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04786

摘要： Image forming equipment for performing a predetermined image forming operation by use of a stepwise drive source such as a stepping motor or pulse motor. Either one of a recording medium and a record head is driven by a pulse motor, and whether or not it has reached a predetermined position is determined. While such a decision as to the position of the recording medium or the record head is under way, the displacement per step is changed over to a displacement per step smaller than a displacement to be effected while the predetermined image forming operation is under way.

摘要翻译： 图像形成设备，用于通过使用诸如步进电机或脉冲电动机的逐步驱动源进行预定的图像形成操作。 记录介质和记录头中的任一个由脉冲电机驱动，并确定是否达到预定位置。 虽然关于记录介质或记录头的位置的这样的决定正在进行中，但是当步骤进行预定的图像形成操作时，每步的位移被改变为小于在要进行的位移的位移。