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：US06658227B2

公开(公告)日：2003-12-02

申请号：US10188756

申请日：2002-07-05

申请人： Hajime Oyama ,  Tsukuru Kai ,  Katsuhiro Aoki ,  Takashi Hodoshima ,  Yasuo Miyoshi ,  Ichiro Kadota

发明人： Hajime Oyama ,  Tsukuru Kai ,  Katsuhiro Aoki ,  Takashi Hodoshima ,  Yasuo Miyoshi ,  Ichiro Kadota

IPC分类号： G03F1508

CPC分类号： G03G13/08 ,  G03G2215/0636

摘要： The development is performed under a condition that |Q2|−|Q1|/|Q1≦±0.45. Here, Q1 denotes an average amount of charge on toner held on a development roller and carried toward a development region immediately before development. Q2 denotes an average amount of charge on toner immediately before development held and carried toward the development region in the state immediately after development of an electrostatic latent image on a development drum. This is effective to allow the amount of charge q/m on toner held on the development roller to have a variation rate of 45% or below and an afterimage rate R within 2%.

摘要翻译： 在| Q2 | - | Q1 | / | Q1 <=±0.45的条件下进行显影。 这里，Q1表示保持在显影辊上的调色剂上的平均充电量，并且紧靠显影前的显影区域携带。 Q2表示紧接在显影鼓上的静电潜像显影后立即显影状态下保持并承载于显影区域的调色剂上的平均电荷量。 这有助于使显影辊上保持的调色剂上的电荷量q / m具有45％以下的变化率和2％以内的残像率R。

公开(公告)号：US06505014B2

公开(公告)日：2003-01-07

申请号：US09964794

申请日：2001-09-28

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

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

IPC分类号： G03G1506

CPC分类号： G03G15/065 ,  G03G13/08

摘要： An image forming apparatus of the present invention includes an image carrier made up of a conductive base and photoconductive layer and a toner carrier to which a bias for development is applied. The toner carrier conveys toner deposited thereon to a developing position where the toner carrier faces the image carrier, thereby developing a latent image formed on the image carrier. The apparatus effects low-voltage development that protects the image carrier from electrostatic fatigue, obviates background contamination, and realizes image density as high as 0.5 ×10−3 g/cm2 or above in terms of the amount of toner deposition. Further, the apparatus implements faithful development of the latent image by reducing the edge effect. An image forming process unit removable from the apparatus is also disclosed.

摘要翻译： 本发明的图像形成装置包括由导电基底和光电导层构成的图像载体和施加偏压的调色剂载体。 调色剂载体将沉积在其上的调色剂输送到显影位置，在该显影位置调色剂载体面向图像载体，从而显影形成在图像载体上的潜像。 该装置实现低电压显影，其保护图像载体免受静电疲劳，消除背景污染，并且根据调色剂沉积量实现高达0.5×10 -3 g / cm 2或更高的图像密度。 此外，该装置通过减少边缘效应来实现潜像的忠实发展。 还公开了可从该装置移除的图像形成处理单元。

公开(公告)号：US20120213557A1

公开(公告)日：2012-08-23

申请号：US13365852

申请日：2012-02-03

申请人： Daichi Yamaguchi ,  Katsuhiro Aoki ,  Akihiro Kawakami

发明人： Daichi Yamaguchi ,  Katsuhiro Aoki ,  Akihiro Kawakami

IPC分类号： G03G15/09

CPC分类号： G03G15/0813 ,  G03G15/0893

摘要： A developing device includes: a first developer carrier that is moved in a same direction as a moving direction of a latent image carrier at a faster linear speed than the latent image carrier; a second developer carrier that further develops the obtained toner image and that is moved in a same direction at a faster linear speed than the latent image carrier; and a bias output unit that outputs a developing bias to be applied to the second developer carrier. The developing bias includes a direct-current component and a non-rectangular alternating-current component whose waveform has a gentle edge at which a direction of an electric field between the second developer carrier and a background portion of the latent image carrier is changed to a direction in which the toner is moved from the background portion toward the second developer carrier.

摘要翻译： 显影装置包括：第一显影剂载体，其以比潜像载体更快的线速度在与潜像载体的移动方向相同的方向上移动; 第二显影剂载体，其进一步显影所获得的调色剂图像，并且以比潜像载体更快的线速度在相同方向上移动; 以及偏置输出单元，其输出要施加到第二显影剂载体的显影偏压。 显影偏压包括直流分量和非矩形交流分量，其波形具有平缓的边缘，第二显影剂载体和潜像载体的背景部分之间的电场的方向改变为 调色剂从背景部分朝向第二显影剂载体移动的方向。

公开(公告)号：US20080261768A1

公开(公告)日：2008-10-23

申请号：US12081305

申请日：2008-04-14

申请人： Katsuaki Miyawaki ,  Tetsuo Watanabe ,  Takeo Tsukamoto ,  Katsuhiro Aoki ,  Kei Yasutomi ,  Hitoshi Maruyama ,  Hiroshi Ikeguchi

发明人： Katsuaki Miyawaki ,  Tetsuo Watanabe ,  Takeo Tsukamoto ,  Katsuhiro Aoki ,  Kei Yasutomi ,  Hitoshi Maruyama ,  Hiroshi Ikeguchi

IPC分类号： G03G15/01 ,  F16H3/44

CPC分类号： G03G15/757 ,  G03G2215/017 ,  G03G2221/1657

摘要： A rotary-body driving-force transmitting mechanism transmits a driving force from a driving-force source to a rotary body. A rotary-inertial-body driving-force transmitting mechanism transmits the driving force to a rotary inertial body that suppresses a velocity fluctuation in the rotary body. A rotational velocity shift mechanism shifts the rotational velocity. The rotary inertial body, the rotary-body driving-force transmitting mechanism, and the rotary-inertial-body driving-force transmitting mechanism are provided coaxially with a rotary shaft of the rotary body. A satellite frictional gear mechanism is used as the rotational velocity shift mechanism.

摘要翻译： 旋转体驱动力传递机构将来自驱动力源的驱动力传递到旋转体。 旋转惯性体驱动力传递机构将驱动力传递到抑制旋转体中的速度波动的旋转惯性体。 旋转速度移动机构使旋转速度移动。 旋转惯性体，旋转体驱动力传递机构和旋转惯性体驱动力传递机构与旋转体的旋转轴同轴地设置。 使用卫星摩擦齿轮机构作为转速移动机构。

公开(公告)号：US06526248B1

公开(公告)日：2003-02-25

申请号：US09662550

申请日：2000-09-15

申请人： Katsuhiro Aoki ,  Takashi Hodoshima ,  Hajime Oyama

发明人： Katsuhiro Aoki ,  Takashi Hodoshima ,  Hajime Oyama

IPC分类号： G03G1508

CPC分类号： G03G15/0818 ,  G03G15/0928 ,  G03G2215/0607 ,  G03G2215/0634

摘要： A developing device for an image forming apparatus of the type feeding a one-ingredient or two-ingredient type developer, forming a thin toner layer on a developing roller or toner support member and developing a latent image with the toner layer is disclosed. The toner support member has a surface that is chargeable to the same polarity as toner. The toner support member therefore serves to simply support the toner without electrostatically effecting the toner, so that the development of a latent image is free from the influence of the static electricity of the toner support member. This successfully enhances image quality. A photoconductive element has a coefficient of friction &mgr; confined in the range of 0.1

摘要翻译： 公开了一种用于成像装置的显影装置，该装置用于给单成分或双成分型显影剂供给，在显影辊或调色剂支持部件上形成薄的调色剂层，并使该调色剂层显影潜像。 调色剂支撑构件具有可与调色剂充电至相同极性的表面。 因此，调色剂支撑构件用于简单地支撑调色剂，而不会静电地影响调色剂，使得潜像的显影不受调色剂支撑构件的静电的影响。 这成功地提高了图像质量。 感光元件的摩擦系数μ限制在0.1 <0.4之间，防止调色剂沉积并污染元件的背景区域。 此外，光电导元件的表面被保护并且其使用寿命延长。 此外，调色剂支撑构件的硬度HS位于通过JIS（日本工业标准）A等级测量的10°<= HS <= 45°的范围内，实现光滑的表面，从而确保均匀的显影特性。 还公开了一种包括显影装置的成像设备。

公开(公告)号：US08768224B2

公开(公告)日：2014-07-01

申请号：US13365852

申请日：2012-02-03

申请人： Daichi Yamaguchi ,  Katsuhiro Aoki ,  Akihiro Kawakami

发明人： Daichi Yamaguchi ,  Katsuhiro Aoki ,  Akihiro Kawakami

IPC分类号： G03G15/09

CPC分类号： G03G15/0813 ,  G03G15/0893

摘要： A developing device includes: a first developer carrier that is moved in a same direction as a moving direction of a latent image carrier at a faster linear speed than the latent image carrier; a second developer carrier that further develops the obtained toner image and that is moved in a same direction at a faster linear speed than the latent image carrier; and a bias output unit that outputs a developing bias to be applied to the second developer carrier. The developing bias includes a direct-current component and a non-rectangular alternating-current component whose waveform has a gentle edge at which a direction of an electric field between the second developer carrier and a background portion of the latent image carrier is changed to a direction in which the toner is moved from the background portion toward the second developer carrier.

摘要翻译： 显影装置包括：第一显影剂载体，其以比潜像载体更快的线速度在与潜像载体的移动方向相同的方向上移动; 第二显影剂载体，其进一步显影所获得的调色剂图像，并且以比潜像载体更快的线速度在相同方向上移动; 以及偏置输出单元，其输出要施加到第二显影剂载体的显影偏压。 显影偏压包括直流分量和非矩形交流分量，其波形具有平缓的边缘，第二显影剂载体和潜像载体的背景部分之间的电场的方向改变为 调色剂从背景部分朝向第二显影剂载体移动的方向。

公开(公告)号：US08626039B2

公开(公告)日：2014-01-07

申请号：US13248418

申请日：2011-09-29

申请人： Katsuhiro Aoki ,  Akira Azami ,  Daichi Yamaguchi ,  Akihiro Kawakami

发明人： Katsuhiro Aoki ,  Akira Azami ,  Daichi Yamaguchi ,  Akihiro Kawakami

IPC分类号： G03G15/09

CPC分类号： G03G15/065 ,  G03G9/107 ,  G03G9/113 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1135 ,  G03G15/0907

摘要： A developing device includes a non-magnetic rotatable sleeve of a developer bearer to bear developer and a development electric field generator to generate a development electric field between the image bearer and the developer bearer by applying a development bias to the developer bearer. The developing bias is an AC bias generating an AC electric field therebetween. The magnetic carrier includes a plurality of fine particles each covered by a covering layer made of prescribed material having a volume resistivity equal to or more than 1012 [Ω·cm] having a prescribed particle diameter equal to or less than 100 [nm]. Each of the a plurality of fine particles has a total volume resistivity equal to or less than 105 [Ω·cm]. The magnetic carrier has a total volume resistivity equal to or more than 1012 [Ω·cm].

摘要翻译： 显影装置包括用于承载显影剂的显影剂载体的非磁性可旋转套筒和显影电场发生器，以通过向显影承载件施加显影偏压来在图像承载体和显影剂承载体之间产生显影电场。 显影偏压是在它们之间产生AC电场的AC偏压。 磁性载体包括多个细颗粒，每个细颗粒被具有等于或小于100 [nm]的规定粒径的体积电阻率等于或大于1012Ωcm的规定材料制成的覆盖层覆盖。 多个细颗粒中的每一个具有等于或小于105Ω·cm的总体积电阻率。 磁性载体具有等于或大于1012Ω的总体积电阻率。

公开(公告)号：US07751746B2

公开(公告)日：2010-07-06

申请号：US12081305

申请日：2008-04-14

申请人： Katsuaki Miyawaki ,  Tetsuo Watanabe ,  Takeo Tsukamoto ,  Katsuhiro Aoki ,  Kei Yasutomi ,  Hitoshi Maruyama ,  Hiroshi Ikeguchi

发明人： Katsuaki Miyawaki ,  Tetsuo Watanabe ,  Takeo Tsukamoto ,  Katsuhiro Aoki ,  Kei Yasutomi ,  Hitoshi Maruyama ,  Hiroshi Ikeguchi

IPC分类号： G03G15/00

CPC分类号： G03G15/757 ,  G03G2215/017 ,  G03G2221/1657

摘要： A rotary-body driving-force transmitting mechanism transmits a driving force from a driving-force source to a rotary body. A rotary-inertial-body driving-force transmitting mechanism transmits the driving force to a rotary inertial body that suppresses a velocity fluctuation in the rotary body. A rotational velocity shift mechanism shifts the rotational velocity. The rotary inertial body, the rotary-body driving-force transmitting mechanism, and the rotary-inertial-body driving-force transmitting mechanism are provided coaxially with a rotary shaft of the rotary body. A satellite frictional gear mechanism is used as the rotational velocity shift mechanism.

摘要翻译： 旋转体驱动力传递机构将来自驱动力源的驱动力传递到旋转体。 旋转惯性体驱动力传递机构将驱动力传递到抑制旋转体中的速度波动的旋转惯性体。 旋转速度移动机构使旋转速度移动。 旋转惯性体，旋转体驱动力传递机构和旋转惯性体驱动力传递机构与旋转体的旋转轴同轴地设置。 使用卫星摩擦齿轮机构作为转速移动机构。