公开(公告)号：US08041269B2

公开(公告)日：2011-10-18

申请号：US11757847

申请日：2007-06-04

申请人： Tatsuya Kubo ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

发明人： Tatsuya Kubo ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

IPC分类号： G03G15/09

CPC分类号： G03G15/0815 ,  G03G2215/0648 ,  G03G2215/0838

摘要： A development apparatus includes a first developer chamber configured to store and supply the developer, a first developer bearer configured to convey the developer supplied from the first developer chamber to a first development domain, defined by a portion of the first developer bearer facing a latent image bearer, to develop the latent image, a second developer bearer configured to convey the developer passed through the first development domain to a second development domain, defined by a portion of the second developer bearer facing the latent image bearer, to develop the latent image, a second developer chamber configured to recover the developer passing through the second development domain and store the recovered developer, and a transfer prevention member provided between the second developer chamber and the second developer bearer to reduce a transfer of the developer from the second developer chamber to the second developer bearer.

摘要翻译： 显影装置包括构造成存储和供应显影剂的第一显影剂室，构造成将从第一显影剂室供应的显影剂输送到第一显影区域的第一显影剂承载体，所述第一显影区域由面向潜像的第一显影剂载体的一部分 承载，以开发潜在图像;第二开发者承载，被配置为将通过第一开发域的开发者传达到由面向潜象承载的第二开发者承载的一部分限定的第二开发域，以展开潜像， 第二显影剂室被配置成回收通过第二显影区域并存储回收的显影剂的显影剂，以及设置在第二显影剂室和第二显影剂载体之间的转印防止构件，以减少显影剂从第二显影剂室转移到 第二个开发者承担。

公开(公告)号：US07792466B2

公开(公告)日：2010-09-07

申请号：US11754695

申请日：2007-05-29

申请人： Masayoshi Nakayama ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Tatsuya Kubo

发明人： Masayoshi Nakayama ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Tatsuya Kubo

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0827 ,  G03G2215/0838

摘要： In a developing device, a receive-convey screw conveys a developer received from a developer carrier. The receive-convey screw includes a receive-convey blade including a lower, outer circumferential end located in a downstream end of the receive-convey blade in the developer conveyance direction of the receive-convey screw. A slant-convey screw is disposed obliquely relative to an axial direction of the receive-convey screw, and conveys the developer received from the receive-convey screw upward. The slant-convey screw includes a slant-convey blade including a lower, outer circumferential end located in an upstream end of the slant-convey blade in the developer conveyance direction of the slant-convey screw, the lower, outer circumferential end being located at a height level lower than the lower, outer circumferential end of the receive-convey blade.

摘要翻译： 在显影装置中，接收输送螺杆传送从显影剂载体接收的显影剂。 接收输送螺杆包括接收输送刀片，其包括位于接收输送刀片的沿着接收输送螺杆的显影剂输送方向的下游端的下外周端。 倾斜输送螺杆相对于接收输送螺杆的轴向倾斜地设置，并将从接收输送螺杆接收的显影剂向上传送。 倾斜输送螺杆包括倾斜输送刀片，该倾斜输送刀片包括在倾斜输送螺杆的显影剂输送方向上位于倾斜输送刀片的上游端的下外周端，下外周端位于 高度低于接收输送叶片的下外周端。

公开(公告)号：US20070280744A1

公开(公告)日：2007-12-06

申请号：US11757847

申请日：2007-06-04

申请人： Tatsuya Kubo ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

发明人： Tatsuya Kubo ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

IPC分类号： G03G15/09

CPC分类号： G03G15/0815 ,  G03G2215/0648 ,  G03G2215/0838

摘要： A development apparatus includes a first developer chamber configured to store and supply the developer, a first developer bearer configured to convey the developer supplied from the first developer chamber to a first development domain, defined by a portion of the first developer bearer facing a latent image bearer, to develop the latent image, a second developer bearer configured to convey the developer passed through the first development domain to a second development domain, defined by a portion of the second developer bearer facing the latent image bearer, to develop the latent image, a second developer chamber configured to recover the developer passing through the second development domain and store the recovered developer, and a transfer prevention member provided between the second developer chamber and the second developer bearer to reduce a transfer of the developer from the second developer chamber to the second developer bearer.

摘要翻译： 显影装置包括构造成存储和供应显影剂的第一显影剂室，构造成将从第一显影剂室供应的显影剂输送到第一显影区域的第一显影剂承载体，所述第一显影区域由面向潜像的第一显影剂载体的一部分 承载，以开发潜在图像;第二开发者承载，被配置为将通过第一开发域的开发者传达到由面向潜象承载的第二开发者承载的一部分限定的第二开发域，以展开潜像， 第二显影剂室被配置成回收通过第二显影区域并存储回收的显影剂的显影剂，以及设置在第二显影剂室和第二显影剂载体之间的转印防止构件，以减少显影剂从第二显影剂室转移到 第二个开发者承担。

公开(公告)号：US20070274742A1

公开(公告)日：2007-11-29

申请号：US11754695

申请日：2007-05-29

申请人： Masayoshi Nakayama ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Tatsuya Kubo

发明人： Masayoshi Nakayama ,  Yoshitaka Fujinuma ,  Takashi Suzuki ,  Susumu Tateyama ,  Tsutomu Nakagawa ,  Tatsuya Kubo

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0827 ,  G03G2215/0838

摘要： An image forming apparatus includes a latent image carrier and a developing device configured to develop a latent image carried by the latent image carrier. In the developing device, a receive-convey screw conveys a developer received from a developer carrier. The receive-convey screw includes a receive-convey blade including a lower, outer circumferential end located in a downstream end of the receive-convey blade in the developer conveyance direction of the receive-convey screw. A slant-convey screw is disposed obliquely relative to an axial direction of the receive-convey screw, and conveys the developer received from the receive-convey screw upward. The slant-convey screw includes a slant-convey blade including a lower, outer circumferential end located in an upstream end of the slant-convey blade in the developer conveyance direction of the slant-convey screw, the lower, outer circumferential end being located at a height level lower than the lower, outer circumferential end of the receive-convey blade.

摘要翻译： 图像形成装置包括潜像载体和构造成显影由潜像载体携带的潜像的显影装置。 在显影装置中，接收输送螺杆传送从显影剂载体接收的显影剂。 接收输送螺杆包括接收输送刀片，其包括位于接收输送刀片的沿着接收输送螺杆的显影剂输送方向的下游端的下外周端。 倾斜输送螺杆相对于接收输送螺杆的轴向倾斜地设置，并将从接收输送螺杆接收的显影剂向上传送。 倾斜输送螺杆包括倾斜输送刀片，该倾斜输送刀片包括在倾斜输送螺杆的显影剂输送方向上位于倾斜输送刀片的上游端的下外周端，下外周端位于 高度低于接收输送叶片的下外周端。

公开(公告)号：US07580657B2

公开(公告)日：2009-08-25

申请号：US11493856

申请日：2006-07-27

申请人： Susumu Tateyama ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

发明人： Susumu Tateyama ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0813 ,  G03G2215/0822 ,  G03G2215/0838 ,  G03G2215/0844

摘要： A developing device includes first-third sections, a developing roller, a partitioning wall and a toner concentration detector. The first-third sections have first-third screw augers respectively. The partitioning wall isolates the third section from the first section and the second section. A supply opening is formed in a portion of the partitioning wall opposing the first section. A toner concentration detector is disposed in the third section. The first screw auger conveys developer including toner to the developing roller, into the third section via the supply opening, and into the second section. The second screw auger conveys developer accommodated in the second section into the third section. The third screw auger conveys developer accommodated in the third section into the first section. Toner is replenished into the third section based on a detection result by the toner concentration detector.

摘要翻译： 显影装置包括第一至第三部分，显影辊，分隔壁和调色剂浓度检测器。 第一部分第三部分分别具有第三螺旋钻。 分隔壁将第三部分与第一部分和第二部分隔离。 供给开口形成在与第一部分相对的分隔壁的一部分中。 调色剂浓度检测器设置在第三部分中。 第一螺旋推送器将包括调色剂的显影剂通过供给口传送到显影辊，并进入第二部分。 第二螺旋推送器将容纳在第二部分中的显影器输送到第三部分。 第三螺旋推送器将容纳在第三部分中的显影器输送到第一部分中。 基于调色剂浓度检测器的检测结果，将调色剂补充到第三部分中。

公开(公告)号：US20070025773A1

公开(公告)日：2007-02-01

申请号：US11493856

申请日：2006-07-27

申请人： Susumu Tateyama ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

发明人： Susumu Tateyama ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa ,  Masayoshi Nakayama

IPC分类号： G03G15/08

CPC分类号： G03G15/0893 ,  G03G15/0877 ,  G03G2215/0813 ,  G03G2215/0822 ,  G03G2215/0838 ,  G03G2215/0844

摘要： A developing device includes first-third sections, a developing roller, a partitioning wall and a toner concentration detector. The first-third sections have first-third screw augers respectively. The partitioning wall isolates the third section from the first section and the second section. A supply opening is formed in a portion of the partitioning wall opposing the first section. A toner concentration detector is disposed in the third section. The first screw auger conveys developer including toner to the developing roller, into the third section via the supply opening, and into the second section. The second screw auger conveys developer accommodated in the second section into the third section. The third screw auger conveys developer accommodated in the third section into the first section. Toner is replenished into the third section based on a detection result by the toner concentration detector.

摘要翻译： 显影装置包括第一至第三部分，显影辊，分隔壁和调色剂浓度检测器。 第一部分第三部分分别具有第三螺旋钻。 分隔壁将第三部分与第一部分和第二部分隔离。 供给开口形成在与第一部分相对的分隔壁的一部分中。 调色剂浓度检测器设置在第三部分中。 第一螺旋推送器将包括调色剂的显影剂通过供给口传送到显影辊，并进入第二部分。 第二螺旋推送器将容纳在第二部分中的显影器输送到第三部分。 第三螺旋推送器将容纳在第三部分中的显影器输送到第一部分中。 基于调色剂浓度检测器的检测结果，将调色剂补充到第三部分中。

公开(公告)号：US20060002749A1

公开(公告)日：2006-01-05

申请号：US11171434

申请日：2005-07-01

申请人： Takashi Suzuki ,  Teruaki Mitsuya ,  Keisuke Kubota ,  Masato Miwa ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa

发明人： Takashi Suzuki ,  Teruaki Mitsuya ,  Keisuke Kubota ,  Masato Miwa ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2025 ,  G03G15/2064 ,  G03G2215/2074

摘要： A fixing device wherein supposing that the total load given to the heating roller and the pressure roller is W (kgf) and the area of the pressure contact portion of the heating roller with respect to the pressure roller (nip area) is S (cm2), the nip pressure (=W/S) is 2.7 kgf/cm2 or more and the length of the pressure contact portion in the direction parallel to the direction of conveyance of the recording material is defined to be 14 mm or more.

摘要翻译： 一种定影装置，其中假设加热辊和加压辊的总负载为W（kgf），加热辊的压力接触部分相对于加压辊（夹持区域）的面积为S（cm < SUP> 2），压区压力（= W / S）为2.7kgf / cm 2以上，压接部的长度方向平行于输送方向 的记录材料被定义为14mm或更大。

公开(公告)号：US07324778B2

公开(公告)日：2008-01-29

申请号：US11171434

申请日：2005-07-01

申请人： Takashi Suzuki ,  Teruaki Mitsuya ,  Keisuke Kubota ,  Masato Miwa ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa

发明人： Takashi Suzuki ,  Teruaki Mitsuya ,  Keisuke Kubota ,  Masato Miwa ,  Yoshitaka Fujinuma ,  Tsutomu Nakagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2025 ,  G03G15/2064 ,  G03G2215/2074

摘要： A fixing device wherein supposing that the total load given to a heating roller and a pressure roller is W (kgf) and the area of the pressure contact portion of the heating roller with respect to the pressure roller (nip area) is S (cm2), the nip pressure (=W/S) is 2.7 kgf/cm2 or more and the length of the pressure contact portion in the direction parallel to the direction of conveyance of a recording material is defined to be 14 mm or more.

摘要翻译： 一种定影装置，其中假设加热辊和加压辊的总负载为W（kgf），加热辊的压力接触部分相对于加压辊（夹持区域）的面积为S（cm < SUP> 2），压区压力（= W / S）为2.7kgf / cm 2以上，压接部的长度方向平行于输送方向 的记录材料被定义为14mm或更大。

公开(公告)号：US5923933A

公开(公告)日：1999-07-13

申请号：US23462

申请日：1998-02-13

申请人： Masayasu Anzai ,  Tsuneaki Kawanishi ,  Yoshitaka Fujinuma ,  Hiroyoshi Matsumoto ,  Yasuo Takuma ,  Hisao Okada ,  Masayuki Ainoya ,  Takashi Suzuki ,  Yuichiro Suzuki ,  Tomonari Hokkyo ,  Koji Kato ,  Katsuya Kawai ,  Tsutomu Nakagawa

发明人： Masayasu Anzai ,  Tsuneaki Kawanishi ,  Yoshitaka Fujinuma ,  Hiroyoshi Matsumoto ,  Yasuo Takuma ,  Hisao Okada ,  Masayuki Ainoya ,  Takashi Suzuki ,  Yuichiro Suzuki ,  Tomonari Hokkyo ,  Koji Kato ,  Katsuya Kawai ,  Tsutomu Nakagawa

IPC分类号： G03G15/09

CPC分类号： G03G15/09 ,  G03G2215/0609 ,  G03G2215/0648

摘要： A uniform image is obtained by matching the sliding friction force, the moving speed and the developing agent in a developing region of two developing rollers and an electric characteristic of a photosensitive body used for image development. Two developing rollers rotating in directions opposite to each other are used, the moving direction of the first developing roller being opposite to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the first developing roller to a circumferential speed of the photosensitive body is within a rage of 0.5 to 2.5; and the moving direction of the second developing roller is equal to the moving direction of the photosensitive body, and a circumferential speed ratio of a circumferential speed of the second developing roller to a circumferential speed of the photosensitive body is within a range of 1.5 to 3.5. A ratio of the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the first developing roller and the sliding friction force between a magnetic brush for developing agent and the photosensitive body formed in the second developing roller is within a range of 0.9 to 2.1.

摘要翻译： 通过匹配两个显影辊的显影区域中的滑动摩擦力，移动速度和显影剂以及用于图像显影的感光体的电特性来获得均匀的图像。 使用沿彼此相反的方向旋转的两个显影辊，第一显影辊的移动方向与感光体的移动方向相反，并且第一显影辊的圆周速度与圆周速度的圆周速度比 的感光体在0.5〜2.5的范围内; 并且第二显影辊的移动方向等于感光体的移动方向，并且第二显影辊的圆周速度与感光体的圆周速度的圆周速度比在1.5至3.5的范围内 。 用于显影剂的磁刷和形成在第一显影辊中的感光体之间的滑动摩擦力与显影剂用磁刷与形成在第二显影辊中的感光体之间的滑动摩擦力之间的滑动摩擦力的比率在一定范围内 为0.9至2.1。

公开(公告)号：US07792441B2

公开(公告)日：2010-09-07

申请号：US11766352

申请日：2007-06-21

申请人： Shinichi Akatsu ,  Takashi Suzuki ,  Tsutomu Nakagawa ,  Shigeru Tosa

发明人： Shinichi Akatsu ,  Takashi Suzuki ,  Tsutomu Nakagawa ,  Shigeru Tosa

IPC分类号： G03G15/00

CPC分类号： G03G15/161 ,  G03G15/1605 ,  G03G15/5041

摘要： An image formation apparatus is disclosed. The image formation apparatus includes a transfer effectiveness detector that further includes a computing unit for converting a sensor output voltage into a toner adhesion amount, and a transfer effectiveness detecting unit for obtaining transfer effectiveness by comparing a toner adhesion amount Td on a photo conductor with a toner adhesion amount Tb on a middle transfer object. Here, the toner adhesion amount Td is obtained by the computing unit converting an output of a photo conductor image detection unit, and the toner adhesion amount Tb is obtained by the computing unit converting an output of a middle transfer object image detection unit. When the transfer effectiveness detection unit determines that an abnormality is present in the transfer, whether the abnormality is due to decreased development capacity or due to decreased transfer effectiveness can be determined. If it is determined that the transfer effectiveness is less than a threshold value, a printing operation of the image formation apparatus is stopped given that the transfer effectiveness compensation is not possible.

摘要翻译： 公开了一种图像形成装置。 图像形成装置包括转印有效性检测器，其还包括用于将传感器输出电压转换为调色剂附着量的计算单元，以及用于通过将光导体上的调色剂附着量Td与 中间转印体上的调色剂附着量Tb。 这里，调色剂附着量Td是通过计算单元转换光导体图像检测单元的输出获得的，调色剂附着量Tb是通过计算单元转换中间转印对象图像检测单元的输出而获得的。 当转移有效性检测单元确定转移中存在异常时，可以确定异常是由于显影能力降低还是由于转移有效性降低。 如果确定转移有效性小于阈值，则由于转移有效性补偿是不可能的，所以图像形成装置的打印操作被停止。