公开(公告)号：US20060072943A1

公开(公告)日：2006-04-06

申请号：US11242872

申请日：2005-10-05

申请人： Kazumi Suzuki ,  Ichiro Kadota ,  Hisashi Shoji ,  Atsushi Shinozaki ,  Chikara Imai

发明人： Kazumi Suzuki ,  Ichiro Kadota ,  Hisashi Shoji ,  Atsushi Shinozaki ,  Chikara Imai

IPC分类号： G03G15/01

CPC分类号： G03G21/0064 ,  G03G15/0194

摘要： A multi color image forming apparatus includes a plurality of stations arranged side by side for forming unique mono-color toner images using mono-color developers each having a different mono-color toner. Each of the plurality of stations includes an image bearing member for bearing a latent image, and a developing device for visualizing the latent image into the mono-color toner image. A conveying device is provided to convey a transfer medium. A transfer device is provided to transfer the mono-color toner images from the image bearing members to the transfer medium. Charge ability of prescribed mono-color toner included in the mono-color developer used in the upstream station is smaller than that used in the downstream station.

公开(公告)号：US06757509B2

公开(公告)日：2004-06-29

申请号：US09846244

申请日：2001-05-02

申请人： Hisashi Shoji ,  Tsukuru Kai ,  Kei Yasutomi ,  Nekka Matsuura ,  Nobutaka Takeuchi ,  Hirokatsu Suzuki

发明人： Hisashi Shoji ,  Tsukuru Kai ,  Kei Yasutomi ,  Nekka Matsuura ,  Nobutaka Takeuchi ,  Hirokatsu Suzuki

IPC分类号： G03G1309

CPC分类号： G03G9/10 ,  G03G13/09 ,  G03G2215/0119 ,  G03G2215/0177

摘要： An electrophotographic image forming apparatus of the present invention frees images from various defects including the thinning of horizontal lines, the omission of the trailing edge an image, background contamination, granularity particular to a halftone image, carrier scattering, and image noise. Further, the apparatus of the present invention solves problems ascribable to patches used to sense image density. Moreover, the apparatus of the present invention faithfully reproduces tonality and has a high developing ability.

摘要翻译： 本发明的电子照相图像形成装置从各种缺陷中释放图像，包括水平线的变薄，图像的后缘的省略，背景污染，半色调图像特定的粒度，载体散射和图像噪声。 此外，本发明的装置解决了归因于用于检测图像密度的贴片的问题。 此外，本发明的装置忠实地再现音调并具有高显影能力。

公开(公告)号：US06978109B2

公开(公告)日：2005-12-20

申请号：US10793849

申请日：2004-03-08

申请人： Hisashi Shoji ,  Tsukuru Kai ,  Kei Yasutomi ,  Nekka Matsuura ,  Nobutaka Takeuchi ,  Hirokatsu Suzuki

发明人： Hisashi Shoji ,  Tsukuru Kai ,  Kei Yasutomi ,  Nekka Matsuura ,  Nobutaka Takeuchi ,  Hirokatsu Suzuki

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

CPC分类号： G03G9/10 ,  G03G13/09 ,  G03G2215/0119 ,  G03G2215/0177

摘要： An electrophotographic image forming apparatus of the present invention frees images from various defects including the thinning of horizontal lines, the omission of the trailing edge of an image, background contamination, granularity particular to a halftone image, carrier scattering, and image noise. Further, the apparatus of the present invention solves problems ascribable to patches used to sense image density. Moreover, the apparatus of the present invention faithfully reproduces tonality and has a high developing ability.

摘要翻译： 本发明的电子照相图像形成装置可以从各种缺陷中释放图像，包括水平线的变薄，图像的后缘的遗漏，背景污染，半色调图像特有的粒度，载体散射和图像噪声。 此外，本发明的装置解决了归因于用于检测图像密度的贴片的问题。 此外，本发明的装置忠实地再现音调并具有高显影能力。

公开(公告)号：US20050154562A1

公开(公告)日：2005-07-14

申请号：US10986781

申请日：2004-11-15

申请人： Nekka Matsuura ,  Hisashi Shoji ,  Satoshi Ouchi ,  Katsuaki Miyawaki ,  Osamu Satoh ,  Masaaki Yamada ,  Shuji Hirai ,  Yoshinori Nakagawa ,  Yasushi Nakazato ,  Tomoko Takahashi ,  Takashi Seto ,  Seiji Hoshino

发明人： Nekka Matsuura ,  Hisashi Shoji ,  Satoshi Ouchi ,  Katsuaki Miyawaki ,  Osamu Satoh ,  Masaaki Yamada ,  Shuji Hirai ,  Yoshinori Nakagawa ,  Yasushi Nakazato ,  Tomoko Takahashi ,  Takashi Seto ,  Seiji Hoshino

IPC分类号： G06F11/30

CPC分类号： G06F11/008

摘要： An abnormality determining apparatus is capable of avoiding mistaken determinations due to the normal value of information obtained by an information obtaining unit differing according to the content of specific information such as the operating mode setting, and deterioration of the determination precision due to a change in the user of a detection subject. The abnormality determining apparatus comprises an information storage unit for storing normal index information serving as an index of a normal state of the detection subject, an information obtaining unit for obtaining a plurality of types of information, and an abnormality determining unit for determining the presence of an abnormality in the detection subject on the basis of the normal index information stored in the information storage unit, and the information obtained by the information obtaining unit. The information storage unit stores a plurality of normal index information having different values. The abnormality determining unit selects, at a predetermined timing, normal index information to be used to determine the presence of an abnormality in the detection subject from the plurality of normal index information.

摘要翻译： 异常判定装置能够避免由于信息获取单元根据诸如操作模式设置的特定信息的内容而不同的信息的正常值导致的错误确定，以及由于改变了的确定精度的劣化 检测对象的用户。 异常判定装置包括：信息存储单元，用于存储用作检测对象的正常状态的索引的正常索引信息;获取多种信息的信息获取单元;以及用于确定检测对象的存在的异常确定单元 根据存储在信息存储单元中的正常索引信息，检测对象的异常以及由信息获取单元获得的信息。 信息存储单元存储具有不同值的多个正常索引信息。 所述异常判定部在预定的定时中，从所述多个所述正常索引信息中选择要用于确定所述检测对象中的异常的正常索引信息。

公开(公告)号：US06721516B2

公开(公告)日：2004-04-13

申请号：US10050955

申请日：2002-01-22

申请人： Katsuhiro Aoki ,  Tsukuru Kai ,  Hajime Oyama ,  Osamu Ariizumi ,  Hisashi Shoji ,  Takashi Hodoshima ,  Yasuo Miyoshi

发明人： Katsuhiro Aoki ,  Tsukuru Kai ,  Hajime Oyama ,  Osamu Ariizumi ,  Hisashi Shoji ,  Takashi Hodoshima ,  Yasuo Miyoshi

IPC分类号： G03G1506

CPC分类号： G03G15/0907 ,  G03G15/065 ,  G03G2215/0177

摘要： An image forming apparatus of the present invention includes a bias power supply for applying a bias VB to a developer carrier on which a developer is deposited. A charge potential deposited on an image carrier, which faces the developer carrier for forming a latent image thereon, is 400 V or below in absolute value. Assume that the potential of the image carrier is lowered to VL after exposure, that a development potential is |VB−VL|, that the maximum set value of the development potential for development is |VB−VL|max, and that the development potential varies in a range satisfying relations: |VB−VL|≦|VB−VL|max+|VB−VL|max×0.2 |VB−VL|≧|VB−VL|max−|VB−VL|max×0.2 |VB−VL|max≦300 V Then image density varies by a width of 10% of image density corresponding to the maximum set value of the development potential or less.

摘要翻译： 本发明的图像形成装置包括用于将偏压VB施加到其上沉积有显影剂的显影剂载体上的偏置电源。 沉积在图像载体上的电荷电位，其面向用于在其上形成潜像的显影剂载体，其绝对值为400V或更低。 假设图像载体的电位在曝光后降低到VL，显影电位为| VB-VL |，显影发展潜力的最大设定值为| VB-VL | max，显影电位 在满足关系的范围内变化：然后图像浓度根据显影电位的最大设定值或更小的图像浓度的10％的宽度变化。

公开(公告)号：US06597885B2

公开(公告)日：2003-07-22

申请号：US09873246

申请日：2001-06-05

申请人： Tsukuru Kai ,  Nobutaka Takeuchi ,  Hisashi Shoji ,  Kei Yasutomi ,  Takeyoshi Sekine ,  Osamu Ariizumi

发明人： Tsukuru Kai ,  Nobutaka Takeuchi ,  Hisashi Shoji ,  Kei Yasutomi ,  Takeyoshi Sekine ,  Osamu Ariizumi

IPC分类号： G03G1509

CPC分类号： G03G21/00 ,  G03G15/0921

摘要： An image forming apparatus including a developing device and an image carrier facing the developing device. The developing device includes a main magnetic pole for causing a developer to magnetically deposit on an outer periphery of a developer carrier in a form of a magnet brush. The image carrier has a coefficient of friction of 0.5 or below, and a flux density in a normal direction has an attenuation ratio of 40% or above.

摘要翻译： 一种图像形成装置，包括显影装置和面向显影装置的图像载体。 显影装置包括用于使显影剂以磁刷的形式磁性沉积在显影剂载体的外周上的主磁极。 图像载体的摩擦系数为0.5以下，并且正常方向的磁通密度具有40％以上的衰减比。

公开(公告)号：US6125243A

公开(公告)日：2000-09-26

申请号：US157613

申请日：1998-09-21

申请人： Hisashi Shoji ,  Kiyotaka Ohta ,  Tsukuru Kai ,  Nobuto Yokokawa ,  Kiyonori Tsuda ,  Satoshi Hatori

发明人： Hisashi Shoji ,  Kiyotaka Ohta ,  Tsukuru Kai ,  Nobuto Yokokawa ,  Kiyonori Tsuda ,  Satoshi Hatori

IPC分类号： G03G15/08

CPC分类号： G03G15/0844 ,  G03G15/0855 ,  G03G15/0865 ,  G03G15/0868 ,  G03G2215/0668 ,  G03G2215/0685

摘要： In an image forming apparatus, a developing unit for forming an image by use of a two-ingredient type developer, i.e., toner and carrier mixture, includes a container for replenishing fresh toner and for replacing carrier deteriorated due to aging or a developer including such carrier. The developer in the developing unit will be collected based on the number of times that a part of the developer has been replenished.

摘要翻译： 在图像形成装置中，用于通过使用双成分型显影剂（即调色剂和载体混合物）形成图像的显影单元包括用于补充新鲜调色剂的容器和用于替换由于老化引起的劣化的载体或包括这种显影剂的显影剂 载体 开发单位的开发人员将根据部分开发人员的补充次数进行收集。

公开(公告)号：US5970280A

公开(公告)日：1999-10-19

申请号：US154499

申请日：1998-09-17

申请人： Hirokatsu Suzuki ,  Hisashi Shoji

发明人： Hirokatsu Suzuki ,  Hisashi Shoji

IPC分类号： G03G15/06

CPC分类号： G03G15/065

摘要： An image forming apparatus includes an image support which supports an electrostatic latent image on a surface of the image support. A developing unit has a developing agent support which retains a developing agent, including a toner and carriers, contained in the developing unit. The developing unit converts the latent image on the image support into a toner image by causing the toner to adhere to the surface of the image support. A developing bias supplying unit supplies a developing bias voltage to the developing agent support of the developing unit, the developing bias voltage being one of a DC bias voltage and an AC bias voltage. A timer measures a non-driven period of the developing agent in the developing unit. A control unit selects one of the DC bias voltage and the AC bias voltage from the developing bias supplying unit based on the non-driven period measured by the timer, and controls the developing bias voltage at an output of the developing bias supplying unit such that the selected one of the DC bias voltage and the AC bias voltage is supplied to the developing agent support.

摘要翻译： 图像形成装置包括支持图像载体的表面上的静电潜像的图像载体。 显影单元具有保持包含在显影单元中的显影剂，包括调色剂和载体的显影剂载体。 显影单元通过使调色剂粘附到图像载体的表面上将图像载体上的潜像转换成调色剂图像。 显影偏压供应单元将显影偏压提供给显影单元的显影剂载体，显影偏压是DC偏置电压和AC偏压之一。 定时器测量显影单元中的显影剂的非驱动时间。 控制单元基于由定时器测量的非驱动周期从显影偏压供应单元中选择DC偏置电压和AC偏压中的一个，并且控制显影偏压供应单元的输出处的显影偏压，使得 将所选择的一个DC偏置电压和AC偏置电压提供给显影剂载体。

公开(公告)号：US5740494A

公开(公告)日：1998-04-14

申请号：US699922

申请日：1996-08-20

申请人： Hisashi Shoji ,  Osamu Endo ,  Kei Yasutomi ,  Masako Yoshii ,  Hidetoshi Yano ,  Yasushi Nakazato ,  Takayuki Kimura

发明人： Hisashi Shoji ,  Osamu Endo ,  Kei Yasutomi ,  Masako Yoshii ,  Hidetoshi Yano ,  Yasushi Nakazato ,  Takayuki Kimura

IPC分类号： G03G21/00

CPC分类号： G03G21/0064 ,  G03G21/0005

摘要： An image forming apparatus includes a cleaning member for collecting toner left on an image carrier after image transfer, and then redepositing it on the carrier, so that a developing unit can collect the redeposited toner to reuse it. Even when the frictional charging ability of the cleaning member falls due to aging or varying environment, the charge of the toner left on the image carrier is regulated to preselected polarity before the toner reaches the cleaning member, thereby enhancing a toner collecting efficiency and a toner redepositing efficiency. The charge of the toner redeposited on the image carrier and moved away from the cleaning member is regulated to preselected polarity while being increased, thereby reducing a load to act on the developing unit. The toner is redeposited on the image carrier efficiently without regard to the polarity of the toner collected by the cleaning member. The developing unit is allowed to collect all the toner redeposited on the image carrier, thereby freeing the background of an image from contamination. When the cleaning member collects the toner from the image carrier, the toner is prevented from being transferred from the cleaning member to the image carrier, thereby obviating defective cleaning. An image forming speed is increased by reducing the interval between consecutive image forming areas. A pressure is caused to act uniformly between the cleaning member and the image carrier in the axial direction of the roller, further enhancing the toner collecting efficiency and toner redepositing efficiency while obviating background contamination.

摘要翻译： 图像形成装置包括用于在图像转印之后收集在图像载体上的调色剂的清洁部件，然后将其重新沉积在载体上，使得显影单元可以收集再沉积的调色剂以重新使用。 即使当清洁部件的摩擦带电能力由于老化或环境变化而降低时，在调色剂到达清洁部件之前，留在图像载体上的调色剂的电荷被调节为预选的极性，从而提高调色剂收集效率和调色剂 重新沉积效率。 再次沉积在图像载体上并移动离开清洁部件的调色剂的电荷在增加时被调节到预选的极性，从而减少作用于显影单元的负载。 调色剂有效地再沉积在图像载体上，而不考虑由清洁部件收集的调色剂的极性。 允许显影单元收集重新沉积在图像载体上的所有调色剂，从而释放图像的背景污染。 当清洁构件从图像载体收集调色剂时，防止调色剂从清洁构件转移到图像载体，从而避免了有缺陷的清洁。 通过减小连续的图像形成区域之间的间隔来增加图像形成速度。 导致压力在辊的轴向上在清洁构件和图像载体之间均匀地作用，进一步提高调色剂收集效率和调色剂再沉积效率，同时避免背景污染。

公开(公告)号：US5337075A

公开(公告)日：1994-08-09

申请号：US845590

申请日：1992-03-04

申请人： Tomoko Takahashi ,  Hisashi Shoji

发明人： Tomoko Takahashi ,  Hisashi Shoji

IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G03G15/04 ,  G06K15/12 ,  H04N1/036 ,  H04N1/04 ,  H04N1/23 ,  H04N1/387 ,  H04N1/40 ,  B41J2/435

CPC分类号： H04N1/40043 ,  G06K15/1247 ,  H04N1/40031

摘要： An image forming apparatus capable of readily changing the pixel density of an image to be formed on an image carrier and, therefore, stabilizing image reproduction. To change the pixel density, the apparatus turns on, among light emitting elements arranged in a higher density than input image data, a plurality of light emitting elements per pixel or by changing the number of light emitting elements per pixel and the turn-on time thereof.

摘要翻译： 一种图像形成装置，其能够容易地改变要形成在图像载体上的图像的像素密度，并因此稳定图像再现。 为了改变像素密度，在以比输入图像数据更高的密度布置的发光元件中的每个像素的多个发光元件或通过改变每个像素的发光元件的数量和导通时间 其中。