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：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：US06782225B2

公开(公告)日：2004-08-24

申请号：US10713156

申请日：2003-11-17

申请人： Tsukuru Kai ,  Hisashi Shoji

发明人： Tsukuru Kai ,  Hisashi Shoji

IPC分类号： G03G1501

CPC分类号： G03G15/0921 ,  G03G2215/0177

摘要： In a developing device including a plurality of developing sections each including a developer carrier that causes a developer deposited thereon to form a magnet brush and contact an image carrier, the developer carrier including: a rotatable nonmagnetic sleeve; and a stationary magnet roller accommodated in the sleeve and including a magnetic pole for scooping up the developer to the sleeve, a magnetic pole for conveying the developer deposited on the sleeve, and a main magnetic pole for causing the developer to rise on the sleeve in a form of the magnet brush. The plurality of developing sections include at least one developing section in which a flux density of the main magnetic pole in a normal direction has an attenuation ratio of 40% or above and at least one developing section in which said flux density has an attenuation ratio of 30% or below.

摘要翻译： 在包括多个显影部分的显影装置中，每个显影部分包括使沉积在其上的显影剂形成磁刷并与图像载体接触的显影剂载体，所述显影剂载体包括：可旋转的非磁性套筒; 以及容纳在套筒中并包括用于将显影剂舀到套筒上的磁极的固定磁辊，用于输送沉积在套筒上的显影剂的磁极和用于使显影剂在套筒上升高的主磁极 一种形式的磁铁刷。 多个显影部分包括至少一个显影部分，其中主磁极在正常方向上的磁通密度具有40％或更大的衰减比，以及至少一个显影部分，其中所述磁通密度具有衰减比 30％以下。

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：US06456806B2

公开(公告)日：2002-09-24

申请号：US09852212

申请日：2001-05-10

申请人： Hisashi Shoji ,  Tsukuru Kai

发明人： Hisashi Shoji ,  Tsukuru Kai

IPC分类号： G03A1509

CPC分类号： G03G21/0064 ,  G03G2221/0005

摘要： A developing device for an image forming apparatus capable of collecting a developer left on an image carrier with a so-called cleanerless process is disclosed. A ratio of a distance between the image carrier and a developer carrier at the boundary of a nip to a development gap at the center of the nip is selected to be 1.5 or less. This obviates the omission of the trailing edge of an image and granularity and enhances faithful reproduction of horizontal lines and dots despite the use of the cleanerless process.

摘要翻译： 公开了一种图像形成装置的显影装置，其能够以所谓的无清洁器工艺收集图像载体上残留的显影剂。 在辊隙的边界处的图像载体和显影剂载体之间的距离与间隙中心处的显影间隙的比率选择为1.5以下。 这消除了图像的后沿和粒度的遗漏，并且尽管使用无清洁器的过程而增强了水平线和点的忠实再现。

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：US06819901B1

公开(公告)日：2004-11-16

申请号：US09708659

申请日：2000-11-09

申请人： Kei Yasutomi ,  Tsukuru Kai ,  Hisashi Shoji ,  Nobutaka Takeuchi

发明人： Kei Yasutomi ,  Tsukuru Kai ,  Hisashi Shoji ,  Nobutaka Takeuchi

IPC分类号： G03G1509

CPC分类号： G03G15/0921 ,  G03G2215/0609 ,  G03G2215/0634

摘要： An image forming method including providing a developer including a toner and a magnetic carrier, a developer carrier configured to convey the developer deposited thereon, and magnetic field generating means fixed within the developer carrier, and forming a magnetic field which forms a magnet brush between the image carrier and the developer carrier such that the magnet brush rises, contacts the image carrier and collapses within a range in which the magnetic field is more intense than an electric field capable of separating the toner and the magnetic carrier from each other by using the magnetic field generating means. The magnetic brush rubs the image carrier to thereby develop a latent image formed on the image carrier.

摘要翻译： 一种图像形成方法，包括提供包括调色剂和磁性载体的显影剂，构造成输送沉积在其上的显影剂的显影剂载体和固定在显影剂载体内的磁场产生装置，并形成磁场，该磁场在第 图像载体和显影剂载体，使得磁刷上升，与图像载体接触并且在磁场比能够通过使用磁性分离调色剂和磁性载体的电场更强的范围内塌陷 场产生装置。 磁刷摩擦图像载体，从而显影形成在图像载体上的潜像。

公开(公告)号：US5915155A

公开(公告)日：1999-06-22

申请号：US729524

申请日：1996-10-11

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. By rotating the container in one direction, both fresh toner and a two-ingredient developer can be supplied to the developing unit. Initially when a container is mounted, the developer is fed in an amount less than an amount for image formation to start and only when a second container is mounted and rotated is the developer amount sufficient for image formation to start.

摘要翻译： 在图像形成装置中，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含这种载体的显影剂 。 通过沿一个方向旋转容器，可以将新鲜调色剂和双成分显影剂供应到显影单元。 最初当安装容器时，显影剂的供给量小于图像形成开始的量，并且仅当第二容器被安装并且旋转时，显影剂量足以使图像形成开始。