公开(公告)号：US6025108A

公开(公告)日：2000-02-15

申请号：US176627

申请日：1998-10-22

申请人： Atsushi Hujii ,  Nariaki Tanaka ,  Hideki Taniguchi

发明人： Atsushi Hujii ,  Nariaki Tanaka ,  Hideki Taniguchi

IPC分类号： G03G9/08 ,  G03G13/08

CPC分类号： G03G9/0821 ,  G03G13/08 ,  G03G9/0827

摘要： The developing process of this invention comprises supplying a charged toner to a development roller disposed against a photosensitive drum, forming a thin layer of the charged toner on the development roller by a blade press-contacted with the development roller, and contacting this thin layer of the charged toner on the surface of the photosensitive drum on which an electrostatic latent image is formed. The process further comprises using a non-magnetic toner which has a circularity degree of more than 0.94 and which has a falling amount of at least 10 g/5 minutes as measured by a tester for measuring the amount of falling. By using such a toner, it is possible to prevent the collection of the toner on the bottom of a development housing which includes various members for practicing the above process, and it is also possible to prevent the rising of a driving torque of the rollers. The development process of this invention is particularly effectively applied to laser prints or facsimiles containing an ultra-small sized development unit.

摘要翻译： 本发明的显影方法包括将带电调色剂供应到靠着感光鼓设置的显影辊，通过与显影辊压力接触的叶片在显影辊上形成带电调色剂的薄层，并将该薄层 在其上形成有静电潜像的感光鼓的表面上的带电调色剂。 该方法还包括使用圆度为大于0.94的非磁性调色剂，并且通过用于测量下落量的测试仪测量，其具有至少10g / 5分钟的下降量。 通过使用这样的调色剂，可以防止调色剂收集在包括用于实施上述过程的各种构件的显影外壳的底部上，并且还可以防止辊的驱动转矩的上升。 本发明的显影方法特别有效地应用于包含超小型显影单元的激光打印件或传真机。

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。

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。

公开(公告)号：US5830615A

公开(公告)日：1998-11-03

申请号：US865196

申请日：1997-05-29

申请人： Eiichi Miyamoto ,  Mikio Kakui ,  Hideo Nakamori ,  Yukikatsu Imanaka ,  Tadashi Sakuma ,  Maki Uchida ,  Hiroaki Iwasaki ,  Yasuyuki Hanatani ,  Nariaki Tanaka ,  Yuka Nakamura

发明人： Eiichi Miyamoto ,  Mikio Kakui ,  Hideo Nakamori ,  Yukikatsu Imanaka ,  Tadashi Sakuma ,  Maki Uchida ,  Hiroaki Iwasaki ,  Yasuyuki Hanatani ,  Nariaki Tanaka ,  Yuka Nakamura

IPC分类号： C07C211/58 ,  C07C211/59 ,  C07C217/84 ,  C07C217/92 ,  C07C217/94 ,  C07C255/58 ,  G03G5/06

CPC分类号： G03G5/0618 ,  C07C211/58 ,  C07C217/84 ,  G03G5/0609 ,  G03G5/0614 ,  G03G5/0651

摘要： The present invention provides a novel naphthylenediamine derivative which is superior in electric charge transferring capability, compatibility with binding resin and stability, and an electrophotosensitive material which has a higher sensitivity and an excellent durability. The above naphthylenediamine derivative is represented by the following general formula (1), and the electrophotosensitive material is formed by providing a photosensitive layer having this naphthylenediamine derivative as an electric charge transferring material on a conductive substrate. ##STR1## wherein R.sup.1 to R.sup.4, R.sup.5a to R.sup.5f and a to d are as defined.

摘要翻译： 本发明提供一种电荷转移能力优异，与粘合树脂的相容性和稳定性优异的新型萘二胺衍生物，以及具有较高灵敏度和优异耐久性的电光敏材料。 上述萘二胺衍生物由以下通式（1）表示，并且通过在导电性基材上设置具有该亚萘二胺衍生物作为电荷转移材料的感光层而形成电光敏材料。 （1）其中R1至R4，R5a至R5f和a至d定义。

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。

公开(公告)号：US5530524A

公开(公告)日：1996-06-25

申请号：US207166

申请日：1994-03-08

申请人： Mitsuji Tsujita ,  Keizo Kimoto ,  Ichiro Yamazato ,  Nariaki Tanaka ,  Tomoki Tanaka

发明人： Mitsuji Tsujita ,  Keizo Kimoto ,  Ichiro Yamazato ,  Nariaki Tanaka ,  Tomoki Tanaka

IPC分类号： G03G5/06 ,  G03G15/00 ,  G03G15/30 ,  G03G15/32 ,  G03G21/08 ,  G03G21/00

CPC分类号： G03G15/751 ,  G03G15/04045 ,  G03G15/307 ,  G03G15/326 ,  G03G21/08 ,  G03G5/0681

摘要： A compact electrophotographic apparatus is attained by decreasing the diameter of the photosensitive drum so that a plurality of rotations of the drum are required to produce a single sheet image. Images of excellent quality, especially with respect to the lack of stepwise density decrease across the image due to multiple drum rotations per image, are achieved by providing for discharge of the photosensitive drum so that the residual potential on the drum is 10% or less of the charged surface potential after discharge on the first rotation of the drum and the increase in the residual potential is not more than 30% after discharge on the last rotation of a sheet making cycle.

摘要翻译： 通过减小感光鼓的直径来获得紧凑的电子照相设备，以便需要滚筒的多次旋转以产生单张图像。 通过提供感光鼓的放电使得感光鼓的残留电位为10％以下，尤其是对于由于每个图像的多个鼓旋转而导致的图像上逐步密度降低的图像， 滚筒的第一次旋转时的放电后的带电表面电位和剩余电位的增加在片材制作循环的最后旋转之后放电后不大于30％。

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。

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。

公开(公告)号：US5060022A

公开(公告)日：1991-10-22

申请号：US553752

申请日：1990-07-13

申请人： Takeshi Yoshida ,  Nariaki Tanaka

发明人： Takeshi Yoshida ,  Nariaki Tanaka

IPC分类号： G03G15/00 ,  G03G15/043

CPC分类号： G03G15/5033 ,  G03G15/043 ,  G03G15/5045 ,  G03G2215/00084

摘要： Image processing equipment featuring that image forming processing is conducted by selectively applying image density setting conditions according to the temperature of a photo-sensitive body when characteristic deterioration exceeding an appointed level is detected by detecting irreversible characteristic deterioration of the photosensitive body.

公开(公告)号：US06483998B2

公开(公告)日：2002-11-19

申请号：US09878422

申请日：2001-06-12

申请人： Nariaki Tanaka ,  Hiroaki Shiba

发明人： Nariaki Tanaka ,  Hiroaki Shiba

IPC分类号： G03G1500

CPC分类号： G03G15/065

摘要： An image-forming apparatus for forming an image by electrically charging a photosensitive material, forming an electrostatic image through the exposure to light and developing the electrostatic image, wherein the main charged potential, Vo, of the photosensitive material, the potential, Vr, of the exposed portion of the photosensitive material and the developing bias potential DB are so set as to satisfy the following formulas, V1≦|DB−Vr|≦V2  (1) V3≦|Vo−DB|≦300  (2). V1, V2 and V3 are parameters calculated from a developing characteristics curve obtained by plotting the image densities to a potential difference between the developing bias potential and the surface potential, 0 V, of the photosensitive material when the image is formed by changing the developing bias potential with the exposure amount being zero in a state where the potential on the surface of the photosensitive material is maintained at zero.

摘要翻译： 一种图像形成装置，用于通过对感光材料进行充电来形成图像，通过曝光形成静电图像并显影静电图像，其中感光材料的主要电荷Vo，电位Vr， 感光材料和显影偏压电位DB的曝光部分被设定为满足下式，V1，V2和V3是根据通过将图像浓度绘制到显影偏压之间的电位差而获得的显影特性曲线计算的参数 在感光材料的表面上的电位保持为零的状态下通过改变曝光量为零的显影偏压来形成图像时的感光材料的电位和表面电位0V。