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    Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin
    1.
    发明授权
    Electrophotographic photosensitive element comprising a surface protective layer comprising an etherified melamine-formaldehyde resin 失效
    电子照相感光元件包括含有醚化的三聚氰胺 - 甲醛树脂的表面保护层

    公开(公告)号：US5260157A

    公开(公告)日：1993-11-09

    申请号：US599858

    申请日：1990-10-19

    申请人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

    发明人： Yasufumi Mizuta ,  Akihiko Kawahara ,  Kaname Nakatani ,  Nariaki Tanaka

    IPC分类号： G03G5/147

    CPC分类号： G03G5/14704 ,  G03G5/14769 ,  G03G5/14773 ,  G03G5/14791

    摘要： An electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and a methyl-butyl etherified melamine-formaldehyde resin in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer comprising a thermosetting silicone resin, and an acrylic copolymer having an average molecular weight of 6,000 or less in an amount of from 0.1 to 30 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and an electrophotographic photosensitive element comprising a photosensitive layer and a surface protective layer on the photosensitive layer, the surface protective layer containing a thermosetting silicone resin, a methyl etherified melamine-formaldehyde resin and/or a methyl-butyl mixed etherified melamine-formaldehyde resin in an amount of from 0.1 to 50 parts by weight per 100 parts by weight of the non-volatile solid components of the thermosetting silicone resin, and a thermoplastic resin in an amount of from 1 to 11 wt % to a total amount of the non-volatile solid components of the thermosetting silicone resin and the methyl etherified melamine-formaldehyde resin and/or the methyl-butyl mixed etherified melamine-formaldehyde resin.

    Driving mechanism for use in image forming apparatus
    3.
    发明授权
    Driving mechanism for use in image forming apparatus 有权
    用于图像形成装置的驱动机构

    公开(公告)号：US06778796B2

    公开(公告)日：2004-08-17

    申请号：US10328551

    申请日：2002-12-23

    申请人： Masanobu Maeshima ,  Naoki Yamane ,  Masahiro Tsutsumi ,  Eiji Nimura ,  Nariaki Tanaka ,  Akira Matayoshi ,  Koshiro Tomimori

    发明人： Masanobu Maeshima ,  Naoki Yamane ,  Masahiro Tsutsumi ,  Eiji Nimura ,  Nariaki Tanaka ,  Akira Matayoshi ,  Koshiro Tomimori

    IPC分类号： G03G1500

    CPC分类号： G03G15/757

    摘要： A driving mechanism for use in an image forming apparatus has a rotary shaft, a driving joint, a drum gear, a cleaning roller gear, and a transfer roller gear. The rotary shaft extends through a photosensitive member along an axis of rotation of the photosensitive member. The rotary shaft is rotatably supported at the opposite axial end parts thereof by bearings, respectively. The rotary shaft is un-rotatably jointed to the photosensitive member relative thereto at a lateral side part of a rear end part of the rotary shaft corresponding to the rear side of the image forming apparatus. The driving joint is jointed to the rear end part of the rotary shaft protruding from the photosensitive member at the rear side of the image forming apparatus to input a rotating force of a drum motor to the photosensitive drum. The drum gear is provided at the rear side of the photosensitive member. The cleaning roller gear and the transfer roller gear are in mesh with the drum gear. The rotary shaft has a mass larger than the photosensitive member.

    摘要翻译： 用于图像形成装置的驱动机构具有旋转轴，驱动关节，鼓齿轮，清洁辊齿轮和转印辊齿轮。 旋转轴沿着感光构件的旋转轴线延伸穿过感光构件。 旋转轴分别通过轴承可旋转地支撑在其相对的轴向端部。 旋转轴在与图像形成装置的后侧相对应的旋转轴的后端部的侧面部分处相对于感光构件不可旋转地接合。 驱动接头连接到从图像形成设备的后侧的感光部件突出的旋转轴的后端部，以将感光鼓的转鼓的电动机输入。 鼓形齿轮设置在感光构件的后侧。 清洁辊齿轮和转印辊齿轮与鼓齿轮啮合。 旋转轴的质量大于感光构件。

    Electrophotographic photosensitive material
    4.
    发明授权
    Electrophotographic photosensitive material 失效
    电子照相感光材料

    公开(公告)号：US5914208A

    公开(公告)日：1999-06-22

    申请号：US44005

    申请日：1998-03-19

    申请人： Toshiyuki Fukami ,  Nariaki Tanaka ,  Ichiro Yamazato ,  Eiichi Miyamoto ,  Tohru Ueno ,  Hiroshi Mishima

    发明人： Toshiyuki Fukami ,  Nariaki Tanaka ,  Ichiro Yamazato ,  Eiichi Miyamoto ,  Tohru Ueno ,  Hiroshi Mishima

    IPC分类号： G03G15/06 ,  G03G13/22 ,  G03G5/04

    CPC分类号： G03G15/065

    摘要： The photosensitive material of the present invention is provided in contact with a developing roller and has a surface potential decay characteristic in which when the photosensitive material is charged to a surface potential of 800 V and is contacted with the developing roller to which a voltage (VR) is applied, the surface potential (VD) of the photosensitive material after contacting is represented by the formula (1):VD.gtoreq.800.times.EXP (0.00235.times.VR).By using this photosensitive material, a transverse black stripe in the tip of the transfer paper is prevented and it is possible to form an image having excellent image quality and image density.

    摘要翻译： 本发明的感光材料设置成与显影辊接触并且具有表面电位衰减特性，其中当感光材料被充电到800V的表面电位并与显影辊接触时，电压（VR ），接触后感光材料的表面电位（VD）由式（1）表示：VD> / = 800xEXP（0.00235×VR）。 通过使用这种感光材料，防止转印纸的尖端中的横向黑色条纹，并且可以形成具有优异的图像质量和图像浓度的图像。

    Image forming apparatus capable of changing the surface potential of a photosensitive member
    6.
    发明授权
    Image forming apparatus capable of changing the surface potential of a photosensitive member 失效
    能够改变感光部件的表面电位的图像形成装置

    公开(公告)号：US5565963A

    公开(公告)日：1996-10-15

    申请号：US423551

    申请日：1995-04-17

    申请人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Yuji Tanaka ,  Takashi Terada ,  Takuji Terada

    发明人： Mitsuji Tsujita ,  Nariaki Tanaka ,  Yuji Tanaka ,  Takashi Terada ,  Takuji Terada

    IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G21/00 ,  G03G21/08

    CPC分类号： G03G15/5037 ,  G03G15/0266

    摘要： An image forming apparatus includes a rotatable photosensitive member including a conductive base and a photosensitive layer located on a surface of the base; a charging device located in the vicinity of the photosensitive member for charging the photosensitive layer; a charge removing device located upstream with respect to the charging device in a rotation direction of the photosensitive member for radiating light toward the photosensitive layer prior to charging performed by the charging device to uniformize a surface potential of the photosensitive layer; a light radiation device for radiating light to a charging area of the photosensitive layer in the state of being charged by the charging device and for adjusting the amount of the light to be radiated; an exposing device for radiating light corresponding to an image toward the photosensitive layer in the state of being charged; a developing device located downstream with respect to the exposing device in the rotation direction of the photosensitive member; a change detection device for detecting a change in at least one of a charging potential of the photosensitive layer and a sensitivity of the photosensitive layer; and a compensation device for compensating for the change by adjusting the amount of the light radiated toward the charging area by the light radiation device based on results obtained by the change detection device.

    摘要翻译： 图像形成装置包括可旋转感光构件，其包括导电基底和位于基底表面上的感光层; 位于感光构件附近的用于对感光层充电的充电装置; 电荷去除装置，其在所述感光构件的旋转方向上位于所述充电装置的上游，用于在由所述充电装置进行充电之前向所述感光层照射光以使所述感光层的表面电位均匀化; 光放射装置，用于在由充电装置充电的状态下将光照射到感光层的充电区域并用于调节要辐射的光量; 曝光装置，用于在被充电的状态下将对应于图像的光照射到感光层; 显影装置，其在感光构件的旋转方向上相对于曝光装置位于下游; 用于检测感光层的充电电位和感光层的灵敏度中的至少一个的变化的变化检测装置; 以及补偿装置，用于通过基于由变化检测装置获得的结果调节由光辐射装置朝向充电区域辐射的光量来补偿该变化。

    Image forming apparatus
    8.
    发明申请
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US20060269322A1

    公开(公告)日：2006-11-30

    申请号：US11443337

    申请日：2006-05-30

    申请人： Nariaki Tanaka

    发明人： Nariaki Tanaka

    IPC分类号： G03G21/00

    CPC分类号： G03G21/08

    摘要： An image forming apparatus has a charge roller, a charge erasing device and a preliminary voltage-applying member disposed around a rotationally movable photosensitive member. The charge roller subjects a surface of the photosensitive member to a charge process while contacting the surface of the photosensitive member. The charge erasing device is on an upstream side of the photosensitive member relative to the charge roller and erases the charged area in the photosensitive member. The preliminary voltage-applying member is on an upstream side of photosensitive member relative to the charge erasing device and applies to the surface of the photosensitive member a voltage of the same polarity as the voltage applied from the charge roller to the surface, while contacting the surface. The preliminary voltage-applying member is reciprocated along the surface of the photosensitive member and in a direction orthogonal to the movement direction of the surface.

    摘要翻译： 图像形成装置具有充电辊，电荷擦除装置和设置在可旋转移动的感光部件周围的初步电压施加部件。 充电辊在感光构件的表面接触时使感光构件的表面进行充电过程。 电荷擦除装置相对于充电辊位于感光构件的上游侧，并且擦除感光构件中的充电区域。 初步电压施加构件相对于电荷擦除装置在感光构件的上游侧，并且在感光构件的表面施加与从充电辊施加到表面的电压相同极性的电压，同时接触 表面。 初步电压施加构件沿着感光构件的表面并且在与表面的移动方向正交的方向上往复运动。

    Developing roller with a coating layer, developer restricting mechanism and developing device incorporating same
    9.
    发明授权
    Developing roller with a coating layer, developer restricting mechanism and developing device incorporating same 有权
    具有涂层的显影辊，显影剂限制机构和结合其的显影装置

    公开(公告)号：US06205314B1

    公开(公告)日：2001-03-20

    申请号：US09342355

    申请日：1999-06-29

    申请人： Nariaki Tanaka ,  Takahiko Murata ,  Masayuki Ishii ,  Seiji Kado

    发明人： Nariaki Tanaka ,  Takahiko Murata ,  Masayuki Ishii ,  Seiji Kado

    IPC分类号： G03G1508

    CPC分类号： G03G15/0818

    摘要： A developing roller and a developing device are provided to enable a satisfactory developing operation. In order to accomplish this object, a roller main body of the developing roller is made of a roller base material containing acrylonitrile-butadiene rubber as a main component, and an adherence preventing coating layer is formed on the outer circumferential surface of the roller main body, thereby preventing the adherence of developer to the roller main body. Particularly, by setting the friction coefficient of the coating layer within a range of 0.5 to 0.95 inclusive and/or the glossiness thereof within a range of 4.5 to 8 inclusive, an occurrence of any of negative ghost, positive ghost and background fogging is prevented or suppressed to a level where no problem is presented in practical use.

    摘要翻译： 提供显影辊和显影装置以实现令人满意的显影操作。 为了实现该目的，显影辊的辊主体由以丙烯腈 - 丁二烯橡胶为主要成分的辊基材料制成，并且在辊主体的外圆周表面上形成防粘涂层 从而防止显影剂粘附到辊主体上。 特别是通过将涂层的摩擦系数设定在0.5〜0.95以下的范围内和/或其光泽度在4.5〜8的范围内，可以防止发生任何阴影，正幻影和背景雾化， 被抑制到在实际使用中没有出现问题的水平。