公开(公告)号：US07161712B2

公开(公告)日：2007-01-09

申请号：US10114265

申请日：2002-04-03

申请人： Takayuki Maruta ,  Minori Uchida

发明人： Takayuki Maruta ,  Minori Uchida

IPC分类号： G06F15/00

CPC分类号： H04N1/4015

摘要： An apparatus for forming an image includes a photosensitive body, an optical write unit which scans a light beam along a main scan path on a photosensitive body to create a latent image thereon, the light beam having power levels corresponding to multi-level image data, and a shading correction unit which corrects shading along the main scan path by making adjustment to the multi-level image data along the main scan path, and changes the adjustment on a condition-specific basis.

摘要翻译： 用于形成图像的装置包括感光体，光学写入单元，其沿着感光体上的主扫描路径扫描光束以在其上产生潜像，所述光束具有对应于多级图像数据的功率电平， 以及阴影校正单元，其通过对沿着主扫描路径的多级图像数据进行调整来校正沿着主扫描路径的阴影，并且在条件特定的基础上改变调整。

公开(公告)号：US5826146A

公开(公告)日：1998-10-20

申请号：US870555

申请日：1997-06-06

申请人： Takayuki Maruta ,  Hiroshi Takashima ,  Tomoji Ishikawa ,  Kazuyuki Sugihara ,  Shinji Kato ,  Katsuhiro Kosuge

发明人： Takayuki Maruta ,  Hiroshi Takashima ,  Tomoji Ishikawa ,  Kazuyuki Sugihara ,  Shinji Kato ,  Katsuhiro Kosuge

IPC分类号： G03G15/01 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/0121 ,  G03G15/065 ,  G03G2215/0177

摘要： An image forming device includes a plurality of developing devices and a photosensitive drum. Each of the developing devices includes a developer carrying roller. One of the developing devices is moved to a developing position confronting the photosensitive drum which is formed with a latent image. A first developing bias including a d.c. component and an a.c. component is applied to the developer carrying roller and developer on the developer carrying roller is rendered in contact with the latent image on the photosensitive drum so that the latent image is developed. On the other hand, when the developer on the developer carrying roller comes in contact with and separates from the photosensitive drum due to the movement of the developing device, a second developing bias is applied to the developer carrying roller. The second developing bias generates an electric field where the developer on the developer carrying roller is more reluctant to move toward the photosensitive drum as compared with the first developing bias. The second developing bias may include only a d.c. component.

摘要翻译： 图像形成装置包括多个显影装置和感光鼓。 每个显影装置包括显影剂承载辊。 显影装置中的一个移动到与形成有潜像的感光鼓相对的显影位置。 第一个发展中的偏见包括直流 组件和a.c. 将显影剂承载辊施加到显影剂承载辊上并使显影剂承载辊上的显影剂与感光鼓上的潜像接触，使潜像显影。 另一方面，当显影剂承载辊上的显影剂由于显影装置的移动而与感光鼓接触并与感光鼓分离时，第二显影偏压被施加到显影剂承载辊上。 与第一显影偏压相比，第二显影偏压产生电场，显影剂承载辊上的显影剂更不愿意向感光鼓移动。 第二种发展中的偏见可能只包括直流 零件。

公开(公告)号：US5384628A

公开(公告)日：1995-01-24

申请号：US131967

申请日：1993-10-08

申请人： Nobuo Takami ,  Kazuyuki Sugihara ,  Takayuki Maruta ,  Kazuo Nojima ,  Noboru Sawayama ,  Kaoru Yoshimatsu ,  Katsuji Watabe ,  Takuji Yoneda

发明人： Nobuo Takami ,  Kazuyuki Sugihara ,  Takayuki Maruta ,  Kazuo Nojima ,  Noboru Sawayama ,  Kaoru Yoshimatsu ,  Katsuji Watabe ,  Takuji Yoneda

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/0822 ,  G03G15/0896

摘要： A developing device for image forming equipment capable of agitating and mixing a fresh toner and a developer sufficiently is disclosed. The device eliminates a change in image density among individual copies, irregularity in density corresponding to the spiral pitch of, for example, a toner transport screw, and irregularity in density in the front-and-rear direction (axial direction of a developing sleeve) ascribable to defective agitation. To replace or clean a desire part or parts built in a developing device, the device is divided into two such that the desired parts are freely accessible. This facilitates the cleaning and replacement of such parts.

摘要翻译： 公开了能够充分搅拌和混合新鲜调色剂和显影剂的成像设备的显影装置。 该装置消除了各个副本之间的图像浓度的变化，对应于例如调色剂输送螺杆的螺旋间距的密度的不规则性以及前后方向（显影套筒的轴向）的密度的不规则性， 归因于躁动不良。 为了更换或清理内置在显影装置中的期望的部件或部件，该装置被分成两个，使得所需的部件可自由地接近。 这有助于清洁和更换这些部件。

公开(公告)号：US5270783A

公开(公告)日：1993-12-14

申请号：US922389

申请日：1992-07-31

申请人： Takashi Bisaiji ,  Kouji Hayashi ,  Noboru Sawayama ,  Takeyoshi Sekine ,  Takayuki Maruta ,  Norimitu Kikuchi ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama ,  Nobuyuki Koinuma

发明人： Takashi Bisaiji ,  Kouji Hayashi ,  Noboru Sawayama ,  Takeyoshi Sekine ,  Takayuki Maruta ,  Norimitu Kikuchi ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama ,  Nobuyuki Koinuma

IPC分类号： G03G15/00 ,  G03G15/01 ,  G03G15/06 ,  G03G15/08 ,  G03G15/09 ,  G03G21/00 ,  H04N1/29

CPC分类号： G03G15/0126 ,  G03G15/0849 ,  G03G15/0851 ,  G03G15/0853

摘要： Image forming equipment having an image carrier and a developer carrier located face-to-face and forming an AC-superposed DC electric field between them to develop a latent image electrostatically formed on the image carrier. Sensors responsive to image forming conditions are provided and protected from noise ascribable to an AC component included in the electric field in the event when the sensors operate.

摘要翻译： 图像形成设备具有图像载体和显影剂载体，面对面地形成并在它们之间形成AC叠加的DC电场，以形成静电形成在图像载体上的潜像。 提供响应图像形成条件的传感器，并且在传感器操作的情况下，防止归因于包括在电场中的AC分量的噪声。

公开(公告)号：US5227842A

公开(公告)日：1993-07-13

申请号：US855092

申请日：1992-03-20

申请人： Kouji Hayashi ,  Takashi Bisaiji ,  Norimitsu Kikuchi ,  Takeyoshi Sekine ,  Noboru Sawayama ,  Takayuki Maruta ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama

发明人： Kouji Hayashi ,  Takashi Bisaiji ,  Norimitsu Kikuchi ,  Takeyoshi Sekine ,  Noboru Sawayama ,  Takayuki Maruta ,  Tetsuro Miura ,  Kazunori Bannai ,  Kazunari Yamada ,  Nobuhiro Nakayama

IPC分类号： G01N21/47 ,  G03G15/00 ,  G03G15/01 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/065 ,  G03G15/0848 ,  G03G15/5041 ,  G03G2215/00042

摘要： An image forming apparatus having a developing device of the type using a two-component type developer and developing an electrostatic latent image by a bias electric field having an alternating electric field. A predetermined reference latent image is electrostatically formed on an image carrier by a reference latent image forming device and then developed by the developing device to become a reference toner image. An irregularity detecting circuit determines the degree of difference between the density of the edge and the density of the central portion of the reference toner image. A bias electric field control circuit controls the bias electric field in matching relation to the output of the irregularity detecting circuit, thereby preventing the image quality from being degraded by a change in the resistance of the carrier.

摘要翻译： 一种图像形成装置，其具有使用双组分型显影剂的类型的显影装置，并且通过具有交变电场的偏置电场显影静电潜像。 通过参考潜像形成装置在图像载体上静电地形成预定的参考潜像，然后由显影装置显影，成为基准调色剂图像。 不规则检测电路确定边缘的密度与基准调色剂图像的中心部分的密度之间的差异程度。 偏置电场控制电路控制与不规则检测电路的输出匹配关系的偏置电场，从而防止图像质量由于载波电阻的变化而劣化。

公开(公告)号：US20050281593A1

公开(公告)日：2005-12-22

申请号：US11209770

申请日：2005-08-24

申请人： Takamasa Ozeki ,  Takayuki Maruta ,  Takuji Yoneda

发明人： Takamasa Ozeki ,  Takayuki Maruta ,  Takuji Yoneda

IPC分类号： G03G9/10 ,  G03G9/107 ,  G03G15/09

CPC分类号： G03G9/107 ,  G03G9/10 ,  G03G15/09

摘要： A two-component developer including toner and magnetic carriers is provided. The two-component developer is characterized in that when a development device including a developer bearing member bearing the two-component developer is operated under a development condition of an image forming apparatus using a quasi-photoconductor in which a 10 μm thick layer of tetrafluoroethylene resin is provided to a conductive material, the number of times of light emission occurring in a magnetic brush formed on the developer bearing member due to partial conduction in the magnetic brush is 10 times or less per second at an observation cross section that is perpendicular relative to a rotation axis of the developer bearing member.

摘要翻译： 提供了包括调色剂和磁性载体的双组分显影剂。 双组分显影剂的特征在于，当包含带有双组分显影剂的显影剂承载构件的显影装置在使用准光电导体的图像形成装置的显影条件下操作时，其中将10μm厚的四氟乙烯树脂层 被提供给导电材料时，由于在磁刷中的部分导电而在形成于显影剂承载部件上的磁刷中发生的发光次数在相对于 显影剂承载部件的旋转轴线。

公开(公告)号：US5298944A

公开(公告)日：1994-03-29

申请号：US92940

申请日：1993-07-19

申请人： Noboru Sawayama ,  Takayuki Maruta ,  Mitsuo Hasebe

发明人： Noboru Sawayama ,  Takayuki Maruta ,  Mitsuo Hasebe

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

CPC分类号： G03G15/01 ,  G03G15/5041 ,  G03G2215/00042

摘要： A developing system of the type using a two-component developer and capable of reproducing image densities and halftone images stably with no regard to changes in ambient conditions and aging. At least two toner image patterns each having a different toner density are formed on a photoconductive element. The amounts of toner deposited on the individual patterns are sensed by a photosensor, while the supply of toner to a developer and the dynamic range of a latent image are controlled in combination in response to the output of the photosensor.

摘要翻译： 这种类型的显影系统使用双组分显影剂并且能够稳定地再现图像浓度和半色调图像，而不考虑环境条件和老化的变化。 在感光元件上形成各自具有不同调色剂密度的至少两个调色剂图像图案。 通过光电传感器感测沉积在各图案上的调色剂的量，同时响应于光传感器的输出而组合地控制向显影剂供应调色剂和潜像的动态范围。

公开(公告)号：US07174124B2

公开(公告)日：2007-02-06

申请号：US10660699

申请日：2003-09-12

申请人： Hitoshi Ishibashi ,  Takayuki Maruta ,  Yuuji Sawai ,  Takahiro Yoshikawa ,  Atsushi Takehara

发明人： Hitoshi Ishibashi ,  Takayuki Maruta ,  Yuuji Sawai ,  Takahiro Yoshikawa ,  Atsushi Takehara

IPC分类号： G03G15/01

CPC分类号： G03G15/1675 ,  G03G15/0131

摘要： An image forming apparatus of the present invention disclosed is of the type sequentially transferring toner images from a plurality of photoconductive drums to a sheet being conveyed by an image transfer belt or an intermediate image transfer belt one above the other with bias applying members to thereby form a composite color image. Backup rollers, contacting the inside surface of the belt, each have volumetric resistivity of 109 Ω·cm or above and ten-point mean surface roughness Rz of 6 μm or above.

摘要翻译： 公开的本发明的图像形成装置是将调色剂图像从多个感光鼓顺序地转印到由图像转印带或中间图像转印带一起在另一个之上传送的纸张的类型，其中偏压施加部件形成 复合彩色图像。 与带内表面接触的支承辊各自的体积电阻率为10Ω·cm以上，10点平均表面粗糙度Rz为6μm以上。

公开(公告)号：US07139512B2

公开(公告)日：2006-11-21

申请号：US11271732

申请日：2005-11-14

申请人： Akiyo Namiki ,  Takayuki Maruta

发明人： Akiyo Namiki ,  Takayuki Maruta

IPC分类号： G03G15/02

CPC分类号： G03G15/02 ,  G03G15/0233 ,  G03G15/025

摘要： A charging device includes a charging member disposed opposite to a surface of an image carrier. The image carrier is charged by applying a voltage to the charging member, and the charging member includes a substrate and a resistor layer thereon. The resistor layer is disposed with two spacers contacting with the image carrier, so that a gap is created between the image carrier and the resistor layer between the two spacers, wherein width variation of the gap with time is prevented. The end portions of the resistor layer of the charging member protrude above the resistor layer between them, and the spacers are constituted by protrudent fractions of the end portions of the resistor layer.

摘要翻译： 充电装置包括与图像载体的表面相对设置的充电构件。 通过向充电部件施加电压来对图像载体进行充电，并且充电部件在其上包括基板和电阻层。 电阻层设置有与图像载体接触的两个间隔物，使得在两个间隔物之间​​的图像载体和电阻层之间产生间隙，其中防止间隙的宽度变化。 充电部件的电阻层的端部在它们之间的电阻层的上方突出，并且间隔物由电阻层的端部的突出部分构成。

公开(公告)号：US5671470A

公开(公告)日：1997-09-23

申请号：US553776

申请日：1995-10-23

申请人： Takayuki Maruta ,  Hiroshi Takashima ,  Tomoji Ishikawa ,  Kazuyuki Sugihara ,  Shinji Kato ,  Katsuhiro Kosuge

发明人： Takayuki Maruta ,  Hiroshi Takashima ,  Tomoji Ishikawa ,  Kazuyuki Sugihara ,  Shinji Kato ,  Katsuhiro Kosuge

IPC分类号： G03G15/01 ,  G03G15/06 ,  G03G15/08

CPC分类号： G03G15/0121 ,  G03G15/065 ,  G03G2215/0177

摘要： An image forming device includes a plurality of developing devices and a photosensitive drum. Each of the developing devices includes a developer carrying roller. One of the developing devices is moved to a developing position confronting the photosensitive drum which is formed with a latent image. A first developing bias including a d.c. component and an a.c. component is applied to the developer carrying roller and developer on the developer carrying roller is rendered in contact with the latent image on the photosensitive drum so that the latent image is developed. On the other hand, when the developer on the developer carrying roller comes in contact with and separates from the photosensitive drum due to the movement of the developing device, a second developing bias is applied to the developer carrying roller. The second developing bias generates an electric field where the developer on the developer carrying roller is more reluctant to move toward the photosensitive drum as compared with the first developing bias. The second developing bias may include only a d.c. component.

摘要翻译： 图像形成装置包括多个显影装置和感光鼓。 每个显影装置包括显影剂承载辊。 显影装置中的一个移动到与形成有潜像的感光鼓相对的显影位置。 第一个发展中的偏见包括直流 组件和a.c. 将显影剂承载辊施加到显影剂承载辊上并使显影剂承载辊上的显影剂与感光鼓上的潜像接触，使潜像显影。 另一方面，当显影剂承载辊上的显影剂由于显影装置的移动而与感光鼓接触并与感光鼓分离时，第二显影偏压被施加到显影剂承载辊上。 与第一显影偏压相比，第二显影偏压产生电场，显影剂承载辊上的显影剂更不愿意向感光鼓移动。 第二种发展中的偏见可能只包括直流 零件。