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51. 发明授权

US5899611A Apparatus for forming an image on both sides of an image receiver 失效
标题翻译：用于在图像接收器的两侧形成图像的装置
公开(公告)号：US5899611A
公开(公告)日：1999-05-04
申请号：US26498
申请日：1998-02-19
申请人： Satoshi Haneda , Yotaro Sato , Kunio Shigeta
发明人： Satoshi Haneda , Yotaro Sato , Kunio Shigeta
IPC分类号： G03G15/00 , G03G15/16 , G03G15/20 , G03G15/23
CPC分类号： G03G15/231 , G03G15/2017 , G03G2215/00413 , G03G2215/2083
摘要： An apparatus for forming a toner image on both sides of a sheet, includes a photoreceptor on which a first toner image and a second toner image are formed by toner image forming devices; a second image carrying belt onto which the second toner image is transferred from the photoreceptor; a first transferring device to transfer the first toner image from the photoreceptor to a first side of the sheet; a second transferring device to transfer the second toner image from the second image carrying belt to a second side of the sheet; a fixing device having a first fixing roller for fixing the first toner image onto the first side of the sheet and a second fixing roller for fixing the second toner image onto the second side of the sheet, the first fixing roller coming in contact with the second fixing roller so as to form a nip section therebetween; the second image carrying belt having a flat belt surface on which the sheet is conveyed from the photoreceptor toward a separating section at which the sheet is separated from the second image carrying belt, and the second image carrying belt arranged in relation to the fixing device in such a manner that an extended plane from the flat belt surface crosses the first fixing roller at a point between the nip section and a rotation axis of the first fixing roller.
摘要翻译：一种用于在片材的两面上形成调色剂图像的设备包括其上由调色剂图像形成装置形成第一调色剂图像和第二调色剂图像的感光体; 第二图像承载带，第二调色剂图像从感光体转印到第二图像承载带上; 将第一调色剂图像从感光体转印到片材的第一侧的第一转印装置; 第二转印装置，用于将第二调色剂图像从第二图像承载带传送到片材的第二侧; 具有用于将第一调色剂图像固定到片材的第一侧上的第一定影辊和用于将第二调色剂图像固定到片材的第二侧上的第二定影辊的定影装置，第一定影辊与第二定影辊接触第二调色剂图像定影辊，以便在它们之间形成压区; 所述第二图像承载带具有平坦带表面，所述片从所述感光体朝向分离部分从所述第二图像承载带分离，所述第二图像承载带相对于所述定影装置设置在所述分离部分中使得来自平带传送带表面的延伸平面在夹持部与第一定影辊的旋转轴线之间的点处与第一定影辊交叉的方式。

52. 发明授权

US5875372A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US5875372A
公开(公告)日：1999-02-23
申请号：US892531
申请日：1997-07-14
申请人： Yotaro Sato , Kunio Shigeta , Satoshi Haneda , Akitoshi Matsubara , Tadayoshi Ikeda , Masakazu Fukuchi
发明人： Yotaro Sato , Kunio Shigeta , Satoshi Haneda , Akitoshi Matsubara , Tadayoshi Ikeda , Masakazu Fukuchi
IPC分类号： G03G15/20 , G03G15/23
CPC分类号： G03G15/231 , G03G15/2039 , G03G2215/2083
摘要： An image forming apparatus includes a first image carrier on which a toner image forming device forms a toner image; a second image carrier provided opposite to the first image carrier, onto which the toner image on the first image carrier is transferred; first and second transfer devices for transferring the toner image on the first and second image carriers onto one side and the other side of a transfer material, respectively; and a fixing device for fixing the toner images on both sides of the transfer material transferred respectively by the first and second transfer devices. The fixing device includes first and second fixing members provided opposite to one side and the other side of the transfer material, respectively, wherein the transfer material passes between the first and second fixing members, and first and second sensors are provided for detecting temperature of the first and second fixing members respectively. The apparatus further includes a control device for controlling the toner image forming device, the first and second transfer devices, and the fixing device. The control device enables image formation on both sides of the transfer material or on one side of the transfer material, and prohibits image formation on at least both sides of the transfer material when the temperature detected by the first sensor is appropriate for the first fixing member, and the temperature detected by the second sensor is not appropriate for the second fixing member.
摘要翻译：图像形成装置包括第一图像载体，调色剂图像形成装置在其上形成调色剂图像; 与所述第一图像载体相对设置的第二图像载体，所述第一图像载体上的调色剂图像被转印到所述第二图像载体上; 用于将第一和第二图像载体上的调色剂图像分别转印到转印材料的一侧和另一侧上的第一和第二转印装置; 以及用于将分别由第一和第二传送装置传送的转印材料的两侧上的调色剂图像定影的定影装置。固定装置包括第一和第二固定构件，其分别与转印材料的一侧和另一侧相对设置，其中转印材料通过第一和第二固定构件之间，第一和第二传感器被设置用于检测第一和第二固定构件。该装置还包括用于控制调色剂图像形成装置，第一和第二转印装置以及定影装置的控制装置。控制装置能够在转印材料的两侧或转印材料的一侧上形成图像，并且当第一传感器检测到的温度适合于第一固定部件时，禁止在转印材料的至少两侧上的图像形成并且由第二传感器检测到的温度对于第二固定构件是不合适的。

53. 发明授权

US5799226A Electrostatic image forming apparatus with transfer controls for different imaging modes 失效
标题翻译：具有不同成像模式转印控制的静电图像形成装置
公开(公告)号：US5799226A
公开(公告)日：1998-08-25
申请号：US876745
申请日：1997-06-16
申请人： Kunio Shigeta , Yotaro Sato , Satoshi Haneda
发明人： Kunio Shigeta , Yotaro Sato , Satoshi Haneda
IPC分类号： G03G15/16 , G03G15/23
CPC分类号： G03G15/1605 , G03G15/231 , G03G2215/0174 , G03G2215/1661
摘要： An image forming apparatus includes: a toner image forming device to form a toner image on a first image carrier; a first transfer device to transfer the toner image on the first image carrier onto a second image carrier provided opposite to the first image carrier to carry a transferred toner image, or to transfer the toner image on the first image carrier onto one side of a transfer material; a second transfer device to transfer the toner image carried on the second image carrier onto the other side of the material; a fixing device to fix at least one of the toner image on the one side of the transfer material and the toner image on the other side of the transfer material; and a control device to control the toner image forming device, the first transfer device and the second transfer device. The control device has a first image forming mode in which image formation is conducted only on said one side of the transfer material, a second image forming mode in which image formation is conducted only on said other side of the transfer material, and a third image forming mode in which image formation is conducted on both sides of the transfer material. The control device changes a transfer current or a transfer voltage of at least one of the first transfer device and the second transfer device, in accordance with the first, second or third image forming mode.
摘要翻译：图像形成装置包括：调色剂图像形成装置，用于在第一图像载体上形成调色剂图像; 第一转印装置，用于将第一图像载体上的调色剂图像转印到与第一图像载体相对设置的第二图像载体上，以承载转印的调色剂图像，或将第一图像载体上的调色剂图像转印到转印的一侧材料; 第二转印装置，用于将承载在第二图像载体上的调色剂图像转印到材料的另一侧上; 固定装置，用于将转印材料的一侧上的调色剂图像中的至少一个和转印材料的另一侧上的调色剂图像固定; 以及用于控制调色剂图像形成装置，第一转印装置和第二转印装置的控制装置。控制装置具有仅在转印材料的所述一侧进行图像形成的第一图像形成模式，仅在转印材料的所述另一侧进行图像形成的第二图像形成模式，以及第三图像在转印材料的两面进行图像形成的成形模式。控制装置根据第一，第二或第三图像形成模式改变第一传送装置和第二传送装置中的至少一个的传送电流或转印电压。

54. 发明授权

US5602630A Developing device 失效
标题翻译：开发设备
公开(公告)号：US5602630A
公开(公告)日：1997-02-11
申请号：US529092
申请日：1995-09-15
申请人： Isao Endo , Toru Komatsu , Yotaro Sato , Kunio Shigeta , Hiroyuki Nomori
发明人： Isao Endo , Toru Komatsu , Yotaro Sato , Kunio Shigeta , Hiroyuki Nomori
IPC分类号： G03G13/09 , G03G15/09
CPC分类号： G03G13/09 , G03G2215/0607 , G03G2215/0609 , G03G2215/0619
摘要： A non-contact type of developing device for use in an image forming apparatus having an image forming body, includes a developer conveying body facing the image forming body in which a magnet body having a plurality of magnet poles are attached therein, to convey two-component developer in the form of a developer layer onto a developing area and a control electrode provided at the developing area or upstream of the developing area. The control electrode has an electrically insulating member which is in contact with or close to the developing layer, and an electrode to which a voltage is applicable is attached to the insulating member. The following condition is satisfied: ##EQU1## where D.sub.T represents a number of toner layers on the assumption that the toner particles passing through the developing area are filled most densely, D.sub.WS represents a conveying amount (mg/cm.sup.2) of the developer layer at the developing area on the developer conveying body, T.sub.c represents a toner concentration (%) in the developer, dt represents an average sphere equivalent diameter (.mu.m) of toner in the developer, .rho.t represents a toner density (g/cm.sup.3) in the developer, vs represents a circumferential speed (mm/s) of the developer conveying body at the developing area, and vp represents a circumferential speed (mm/s) of the image forming body at the developing area.
摘要翻译：一种用于具有图像形成主体的图像形成装置中的非接触型显影装置，包括：面向图像形成主体的显影剂输送主体，其中附接有多个磁极的磁体，显影剂层形式的显影剂组分显影剂和设置在显影区域的显影区域或显影区域上游的控制电极。控制电极具有与显影层接触或靠近显影层的电绝缘构件，并且能够施加电压的电极附着到绝缘构件。满足以下条件：其中DT代表通过显影区域的调色剂颗粒最密集地填充的调色剂层数，DWS表示显影剂层的输送量（mg / cm 2）显影剂输送体上的显影区域，Tc表示显影剂中的调色剂浓度（％），dt表示显影剂中调色剂的平均球当量直径（μm），rho表示显影剂输送体中调色剂浓度（g / cm 3）显影剂vs表示显影剂输送体在显影区域的圆周速度（mm / s），vp表示图像形成体在显影区域的圆周速度（mm / s）。

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