公开(公告)号：US4864358A

公开(公告)日：1989-09-05

申请号：US164132

申请日：1988-03-04

申请人： Nobuo Kasahara

发明人： Nobuo Kasahara

IPC分类号： G03G15/14 ,  G03G15/01 ,  G03G15/16

CPC分类号： G03G15/1655 ,  G03G15/0131

摘要： A color image forming apparatus having optics for scanning, photoconductive means and transfer means which are driven independently of each other, repetitively scanning a color original document by the optics to sequentially form latent images associated with the document on the photoconductive means which is rotating, developing each of the latent images by color toner when it is formed, sequentially transferring the resulting toner images to a paper sheet which is held on the transfer means which is rotated in contact with the photoconductive means in a predetermined transfer region, separating the paper sheet from the transfer means after the transfer by separator means which is located near the transfer means, and transporting the paper sheet separated from the transfer means to fixing means to complete a color copy. The separator means is located such that the distance between the transfer region and the separator means is shorter than a dimension of a paper sheet of the smallest size usable with the apparatus as measured in an intended direction of paper transfer. The distance between the separator means and the fixing means is longer than a dimension of a paper sheet of the largest size usable with the apparatus as measured in the intended direction of paper sheet.

公开(公告)号：US4862214A

公开(公告)日：1989-08-29

申请号：US163084

申请日：1988-03-02

申请人： Nobuo Kasahara ,  Tosio Nakahara

发明人： Nobuo Kasahara ,  Tosio Nakahara

IPC分类号： G03G15/01 ,  G03G15/16 ,  G03G21/00 ,  G03G21/16

CPC分类号： G03G15/0131 ,  G03G15/1655 ,  G03G2215/0193

摘要： In an arrangement of a photoconductive drum and a transfer drum which are installed in a color image forming apparatus, the rotation speed of the transfer drum is increased during the interval between consecutive image transfers so as to increase the recording speed. The photoconductive and transfer drums are each rotatable about a shaft driven independently of the other. A photoconductive drum and a dielectric sheet are wrapped around the photoconductive drum and the transfer drum, respectively. The transfer drum is constituted by a hollow cylindrical frame which is made up of two rotatable rings and a connecting portion which interconnects the two rings. The rings and connecting portion cooperate to define an intermediate opening, and the dielectric sheet is positioned to close the intermediate opening. The axial width of the photoconductive drum is smaller than that of the intermediate opening. In opposite end portions of the photoconductive drum where the photoconductive material is absent, positioning disks are provided each making direct rolling contact with a portion of a respective one of the rotatable rings where the dielectric sheet is absent.

摘要翻译： 在安装在彩色图像形成装置中的感光鼓和转印鼓的布置中，转印鼓的旋转速度在连续的图像转印之间的间隔期间增加，从而提高记录速度。 光电导体和转印鼓各自可以独立于另一个驱动的轴旋转。 感光鼓和电介质片分别缠绕在感光鼓和转印鼓周围。 转印鼓由两个可旋转环组成的中空圆柱形框架和连接两个环的连接部分构成。 环和连接部分协作以限定中间开口，并且电介质片被定位成封闭中间开口。 感光鼓的轴向宽度小于中间开口的轴向宽度。 在不存在光电导材料的感光鼓的相对端部，设有定位盘，每个定位盘与不存在电介质片的相应一个可旋转环的一部分直接滚动接触。

公开(公告)号：US4733269A

公开(公告)日：1988-03-22

申请号：US12492

申请日：1987-02-09

申请人： Nobuo Kasahara ,  Tadahide Sawamura

发明人： Nobuo Kasahara ,  Tadahide Sawamura

IPC分类号： G03G15/01 ,  G03G15/16 ,  G03G21/00

CPC分类号： G03G15/1655 ,  G03G15/0131 ,  G03G2215/0196

摘要： A control device for a color copier which sets up an adequate color copying time for any particular size of transfer papers. A color document is repeatedly scanned by a scanning optical system to sequentially expose a single photoconductive drum, which is rotated at a constant speed, to a plurality of separated color components. Each of the latent images electrostatically formed on the drum is developed by a toner which is supplied from a developing device and complementary in color to the color component associated with the latent image, the resulting toner images being sequentially transferred to a transfer paper which is held on and rotated together with a transfer drum. The control device includes a paper size setting circuit for setting the size of a transfer paper to be used before a copying operation, a scanning sensor for sensing the start of a scanning performed by the optical system, and a home sensor for sensing the instantaneous angular position of the transfer drum. A control circuit is constructed to determine a transfer start time and a transfer end time in response to a paper size signal outputted by the paper size setting circuit, an ouput signal of the scanning sensor, and an output of the home sensor, and to variably control the rotation speed of the transfer drum during the interval between the transfer start and transfer end times so as to align the leading end of a transfer paper loaded on the transfer drum and the leading end of each of the toner images formed on the photoconductive drum and different in color from each other.

摘要翻译： 用于彩色复印机的控制装置，其为任何特定尺寸的转印纸设置足够的彩色复印时间。 通过扫描光学系统反复扫描彩色文件，以将以恒定速度旋转的单个感光鼓顺序曝光到多个分离的颜色分量。 通过从显影装置供应并与彩色相关的颜色互补的调色剂显影每个静电图像，所得到的调色剂图像被顺序地转印到保持的转印纸上 并与转鼓一起旋转。 控制装置包括用于设置在复印操作之前使用的转印纸的尺寸的纸张尺寸设置电路，用于感测光学系统执行的扫描开始的扫描传感器和用于感测瞬时角度的本地传感器 转印鼓的位置。 控制电路被构造成响应于纸张尺寸设置电路输出的纸张尺寸信号，扫描传感器的输出信号和家用传感器的输出来确定传送开始时间和传送结束时间，并且可变地 在转印开始和转印结束之间的间隔期间控制转印鼓的旋转速度，以便将装载在转印鼓上的转印纸的前端与形成在感光鼓上的每个调色剂图像的前端对准 并且颜色彼此不同。

公开(公告)号：US4159166A

公开(公告)日：1979-06-26

申请号：US787411

申请日：1977-04-14

申请人： Nobuo Kasahara ,  Hiroyoshi Funato

发明人： Nobuo Kasahara ,  Hiroyoshi Funato

IPC分类号： G02B9/34 ,  G02B9/60 ,  G02B13/00 ,  G02B13/24 ,  G03G15/01 ,  G02B5/20

CPC分类号： G02B9/34 ,  G02B13/00 ,  G02B13/24 ,  G02B9/60 ,  G03G15/011

摘要： Two lens groups are arranged symmetrically on opposite sides of a mirror which may be a half-mirror or a dichroic mirror. The mirror is oriented perpendicular to the optical axis of the lens groups. A light image incident on the lens assembly at an angle to the optical axis is split into two beams, one beam being transmitted through the mirror and the other being reflected by the mirror. The refraction of the two beams is the same since the reflected beam passes through the front lens group twice. Where the mirror is dichroic the beams constitute color components of the light image above and below the cutoff wavelength of the dichroic mirror.

摘要翻译： 两个透镜组对称地布置在反射镜的相对侧上，反射镜可以是半透明反射镜或二向色镜。 镜面垂直于透镜组的光轴定向。 入射到透镜组件上与光轴成一定角度的光图像被分成两束，一束透射通过反射镜，另一束被反射镜反射。 两束光束的折射是相同的，因为反射光束通过前透镜组两次。 在反射镜是二向色的情况下，光束构成了分色镜的截止波长之上和之下的光图像的颜色分量。

公开(公告)号：US5436647A

公开(公告)日：1995-07-25

申请号：US070900

申请日：1993-06-03

申请人： Nobuo Kasahara

发明人： Nobuo Kasahara

IPC分类号： G03G15/01 ,  H04N1/04 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/50 ,  H04N1/21

CPC分类号： H04N1/0414 ,  G03G15/01 ,  H04N1/0402 ,  H04N1/0443 ,  H04N1/0446 ,  H04N1/0449 ,  H04N1/047 ,  H04N1/233 ,  H04N1/2338 ,  H04N1/2369 ,  H04N1/508 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04729 ,  H04N2201/04789 ,  H04N2201/04791

摘要： A color image forming apparatus for electrostatically forming a latent image on a photoconductive element by controlling a laser in response to an image signal, and then performing development, image transfer and fixation to form a corresponding image on a sheet. A higher process speed for image formation and a higher scanning speed of a laser beam are selected in a monocolor image forming mode than in a full color image forming mode. The higher scanning speed may be replaced with a greater number of scanning lines.

摘要翻译： 一种彩色图像形成装置，其通过响应于图像信号控制激光而在感光体上静电形成潜像，然后进行显影，图像转印和定影以在片材上形成对应的图像。 在单色图像形成模式中比在全色图像形成模式中选择用于图像形成的更高的处理速度和更高的激光束的扫描速度。 较高的扫描速度可以被更多的扫描线代替。

公开(公告)号：US4835582A

公开(公告)日：1989-05-30

申请号：US128924

申请日：1987-12-04

申请人： Nobuo Kasahara ,  Toshio Nakahara

发明人： Nobuo Kasahara ,  Toshio Nakahara

IPC分类号： G03G15/00

CPC分类号： G03G15/757

摘要： A device for driving a photoconductive drum of an electrophotographic copier and others is operable without the need for gears, a toothed belt and other transmission mechanisms. An outer roller type drive motor is interposed between the drum and a drum support shaft such that an outer wheel portion of the motor drives the drum by way of an engaging member. Those members with which the body of the motor and that of the copier are engaged are made of a vibration-damping material. Tapered portions which are axially movable into and out of contact with each other are provided in a drive transmitting section with which an output portion of the motor and one end of the drum are engageable. Pressing means for causing one end of the drum into contact with the outer wheel portion of the motor through the tapered portions is provided at the other end of the drum.

摘要翻译： 用于驱动电子照相复印机等的感光鼓的装置可操作而不需要齿轮，齿形带和其它传动机构。 外滚筒式驱动马达介于滚筒和滚筒支撑轴之间，使得马达的外轮部分通过啮合部件驱动滚筒。 与电动机的主体和复印机的主体接合的那些构件由减振材料制成。 在驱动传递部分中设置有能够彼此轴向移动和离开接触的锥形部分，电动机的输出部分和鼓的一端可接合在其中。 在滚筒的另一端设置有用于使滚筒的一端通过锥形部分与马达的外轮部分接触的按压装置。

公开(公告)号：US4422405A

公开(公告)日：1983-12-27

申请号：US958872

申请日：1978-11-08

申请人： Nobuo Kasahara ,  Tosio Nakahara ,  Hidetoshi Yano

发明人： Nobuo Kasahara ,  Tosio Nakahara ,  Hidetoshi Yano

IPC分类号： G03G15/01 ,  G03G15/08 ,  G03G15/09 ,  G03G15/00

CPC分类号： G03G15/09

摘要： A single magnetic brush developing unit is disposed adjacent to a photoconductive drum for applying toner thereto. Three applicator units are selectively actuatable to apply three toners of respective primary colors to the developing unit.

摘要翻译： 单个磁刷显影单元邻近于用于向其施加调色剂的感光鼓设置。 三个施加器单元可选择性地致动以将三种相应原色调色剂施加到显影单元。

公开(公告)号：US4277162A

公开(公告)日：1981-07-07

申请号：US57142

申请日：1979-07-12

申请人： Nobuo Kasahara ,  Kouji Yamanobe

发明人： Nobuo Kasahara ,  Kouji Yamanobe

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： G03G15/0855 ,  G03G15/5058 ,  G03G2215/00042

摘要： One or more marks (34), (36) are provided on a non-image area of a platen (23) which supports an original document (16). Electrostatic images of the document (16) and mark (34) are formed on a photoconductive drum (12) and developed to form toner images. The toner image of the original document (16) is transferred to a copy sheet (21) which is fed into contact with the drum (12) by a roller (119) or belt (19). The toner image of the mark (34) is transferred to the roller (119) or belt (19) and the optical density thereof sensed by a photosensor (39). The toner density, transfer charge and other parameters are controlled in accordance with the sensed optical density. An auxiliary sensor (91) may be provided to sense the optical density of the toner image of the mark (34) on the drum (12) prior to transfer for improved parameter control.

摘要翻译： 一个或多个标记（34），（36）设置在支撑原稿（16）的压板（23）的非图像区域上。 文件（16）和标记（34）的静电图像形成在感光鼓（12）上并显影以形成调色剂图像。 原稿（16）的调色剂图像被转印到通过辊（119）或带（19）与鼓（12）接触的复印纸（21）。 标记（34）的调色剂图像被转印到辊（119）或带（19），并且其光密度由光电传感器（39）感测。 调色剂密度，转印电荷和其他参数根据检测到的光密度进行控制。 可以提供辅助传感器（91）以在传送之前感测鼓（12）上的标记（34）的调色剂图像的光密度以改善参数控制。

公开(公告)号：US4018522A

公开(公告)日：1977-04-19

申请号：US606980

申请日：1975-08-22

申请人： Nobuo Kasahara

发明人： Nobuo Kasahara

IPC分类号： G03G15/01 ,  G03G15/28

CPC分类号： G03G15/0142 ,  G03G15/0163 ,  G03G15/283

摘要： A copy sheet is held between a reciprocally rotatable drum and a holding roller which bears against the drum, and for each reciprocal rotation of the drum, an electrostatic latent image corresponding to one of a plurality of selected color separation images is formed on the sheet and each image is developed with a corresponding color developing solution. A mechanism is provided which is effective to prevent misalignment, in particular, lateral misalignment, between the plurality of color separation images which are formed in superposed manner on the sheet. After the formation of the electrostatic latent image, the sheet on the drum has its free end moved away from the peripheral surface thereof and is delivered, in floating condition, into a vessel which contains a corresponding color developing solution for the purposes of developing. This manner of developing minimizes the attachment of color developing solutions to unwanted portions and to prevent a mixing of different color developing solutions.

摘要翻译： 复制纸被保持在可相互旋转的鼓和保持辊之间，该辊与承载在滚筒上的保持辊相对应，并且对于滚筒的每个往复旋转，在片材上形成对应于多个选定的颜色分离图像之一的静电潜像， 每个图像用相应的显色解决方案开发。 提供了一种机制，其有效地防止在叠加形式在片材上形成的多个分色图像之间的未对准，特别是横向错位。 在形成静电潜像之后，滚筒上的薄片的自由端远离其圆周表面，并且在浮动状态下被输送到包含用于显影的目的的相应彩色显影液的容器中。 这种显影方式使彩色显影溶液与不需要的部分的附着最小化并防止不同颜色的显影溶液的混合。

公开(公告)号：US5162859A

公开(公告)日：1992-11-10

申请号：US664941

申请日：1991-03-05

申请人： Tatsuo Hirono ,  Yasunori Kawaishi ,  Nobuo Kasahara

发明人： Tatsuo Hirono ,  Yasunori Kawaishi ,  Nobuo Kasahara

IPC分类号： G03G21/00

CPC分类号： G03G21/00

摘要： A copier, laser printer or similar image forming apparatus of the type having an intermediate image transfer body in the form of a belt allows documents to be reproduced in a page-sequential paper discharge mode which discharges paper sheets, or recording media, in order of page. When an automatic two-sided copy mode is selected, the apparatus automatically sets up the page-sequential paper discharge mode. Hence, when two sided black-and-white documents and color documents are reproduced together in the automatic two-sided copy mode, paper sheets are driven out of the apparatus in order of page.

摘要翻译： 具有带状形式的中间图像转印体的复印机，激光打印机或类似图像形成装置允许以按顺序排纸的页顺序纸张排出模式再现文档，按照以下顺序排出纸张或记录介质 页。 当选择自动双面复印模式时，设备将自动设置页顺序纸张排纸模式。 因此，当双面黑白文档和彩色文档在自动双面复印模式下一起再现时，纸张按页面顺序从设备中排出。