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    Image forming apparatus
    1.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    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。

    Image forming apparatus
    2.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    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。

    Image forming apparatus including preselected range between charge injection layer and voltage potential
    3.
    发明授权
    Image forming apparatus including preselected range between charge injection layer and voltage potential 有权
    图像形成装置包括电荷注入层和电压电位之间的预选范围

    公开(公告)号：US06366751B1

    公开(公告)日：2002-04-02

    申请号：US09662701

    申请日：2000-09-15

    申请人： Masahiko Shakuto ,  Tsukuru Kai ,  Hidetoshi Yano ,  Takahiko Tokumasu ,  Hiroshi Ikuno ,  Kei Yasutomi ,  Hirokatsu Suzuki ,  Nobutaka Takeuchi ,  Toshihiko Baba

    发明人： Masahiko Shakuto ,  Tsukuru Kai ,  Hidetoshi Yano ,  Takahiko Tokumasu ,  Hiroshi Ikuno ,  Kei Yasutomi ,  Hirokatsu Suzuki ,  Nobutaka Takeuchi ,  Toshihiko Baba

    IPC分类号： G03G1500

    CPC分类号： G03G13/025 ,  G03G2215/022

    摘要： An image forming apparatus includes a photoconductive element including a conductive support rotatably supported and a charge injection layer and a surface protection layer sequentially laminated on the conductive support. A charger includes a conductive body for injecting, when a preselected voltage is applied thereto, a charge in the charge injection layer in contact with the surface protection layer. A writing unit exposes the charged surface of the photoconductive element imagewise to thereby locally vary the potential deposited on the photoconductive element and electrostatically form a latent image. A developing unit develops the latent image to thereby produce a corresponding toner image. The toner image is transferred from the photoconductive element to a recording medium. Assuming that the charge injection layer has a thickness of D micrometers, and that the potential deposited on the surface of the photoconductive element by the conductive member is V volts in absolute value, then a ratio V/D is confined in a preselected range that does not contaminate the background of the photoconductive element.

    摘要翻译： 图像形成装置包括：光电元件，其包括可旋转地支撑的导电支撑体和电荷注入层以及依次层叠在导电支撑体上的表面保护层。 充电器包括导电体，用于当向其施加预选电压时，注入与表面保护层接触的电荷注入层中的电荷。 写入单元使成像的光电导元件的带电表面曝光，从而局部地改变沉积在光电导元件上的电位并静电地形成潜像。 显影单元显影潜像，从而产生相应的调色剂图像。 调色剂图像从感光元件转印到记录介质上。 假设电荷注入层具有D微米的厚度，并且通过导电部件沉积在光电导元件的表面上的电位是绝对值的V伏特，则比率V / D被限制在预定的范围内 不污染光导元件的背景。

    Developing method and a developing device for image forming apparatus
    6.
    发明授权
    Developing method and a developing device for image forming apparatus 有权
    显影方法和图像形成装置的显影装置

    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。

    Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier
    7.
    发明授权
    Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier 有权
    图像形成装置包括在图像载体和显影剂载体之间具有振荡分量的电场

    公开(公告)号：US06823163B2

    公开(公告)日：2004-11-23

    申请号：US09864335

    申请日：2001-05-25

    申请人： Naomi Sugimoto ,  Tsukuru Kai ,  Hisashi Shoji ,  Nobutaka Takeuchi

    发明人： Naomi Sugimoto ,  Tsukuru Kai ,  Hisashi Shoji ,  Nobutaka Takeuchi

    IPC分类号： G03G1509

    CPC分类号： G03G15/09

    摘要： An image forming apparatus develops a latent image formed on an image carrier with a developer that forms a magnet brush on a developer carrier. The developer carrier is made up of a sleeve and a stationary magnet roller accommodated in the sleeve. The magnet roller includes a main pole for causing the developer to form the magnet brush and auxiliary poles for helping the main pole exert a magnetic force. An electric field including an oscillation component is formed between the image carrier and the developer carrier. A particular ratio is set up between a distance between the image carrier and the developer carrier, as measured at the boundary of a nip, and the shortest distance between them, between the above shortest distance and the shortest distance between the developer carrier and a metering member, or between the shortest distance between the image carrier and the developer carrier and the amount of developer scooped up to the image carrier.

    摘要翻译： 图像形成装置将形成在图像载体上的潜像用形成磁刷的显影剂显影在显影剂载体上。 显影剂载体由容纳在套筒中的套筒和固定磁辊组成。 磁辊包括用于使显影剂形成磁刷的主极和用于帮助主极施加磁力的辅助杆。 在图像载体和显影剂载体之间形成包括振荡分量的电场。 在图像载体和显影剂载体之间的距离（在辊隙的边界处测量）之间的距离和它们之间的最短距离之间，在上述最短距离和显影剂载体与计量之间的最短距离之间建立特定的比例 或者在图像载体和显影剂载体之间的最短距离以及汲取到图像载体的显影剂的量之间。

    Image forming apparatus having a developer carrier capable of preventing toner adhesion
    8.
    发明授权
    Image forming apparatus having a developer carrier capable of preventing toner adhesion 有权
    具有能够防止调色剂附着的显影剂载体的图像形成装置

    公开(公告)号：US06442364B2

    公开(公告)日：2002-08-27

    申请号：US09794077

    申请日：2001-02-28

    申请人： Tsukuru Kai ,  Nobutaka Takeuchi ,  Takeyoshi Sekine ,  Nobuo Takami ,  Osamu Ariizumi

    发明人： Tsukuru Kai ,  Nobutaka Takeuchi ,  Takeyoshi Sekine ,  Nobuo Takami ,  Osamu Ariizumi

    IPC分类号： G03G1509

    CPC分类号： G03G15/09

    摘要： An image forming apparatus of the present invention includes a developing roller accommodating a magnet roller therein. The magnet roller includes a main pole forming a magnetic flux whose attenuation ratio is 40% or above in the direction normal to the developing roller. The axis A of the developer carrier, the axis B of the image carrier and the peak C of the magnetic force of the main pole in the above direction are positioned such that an angle between a line AB and a line AC is substantially zero degree.

    摘要翻译： 本发明的图像形成装置包括在其中容纳磁性辊的显影辊。 磁辊包括形成磁通的主极，该磁通在与显影辊垂直的方向上的衰减比为40％以上。 显影剂载体的轴线A，图像载体的轴线B和主磁极在上述方向上的磁力的峰值C被定位成使得线AB和线AC之间的角度基本上为零度。

    Image forming apparatus
    9.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    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。