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6 条记录 (耗时 0.011 秒)

    Electrophotographic copying machine
    1.
    发明授权
    Electrophotographic copying machine 失效
    电脑复印机

    公开(公告)号：US3869202A

    公开(公告)日：1975-03-04

    申请号：US42278873

    申请日：1973-12-07

    申请人： RICOH KK

    发明人： TABATA YASUHIRO ,  UKAI TAKESHI

    IPC分类号： G03G15/23 ,  G03G15/00 ,  B65H5/22

    CPC分类号： G03G15/234

    摘要： An electrophotographic copying machine is provided including an original receptacle having a first and a second surface for placing a pair of originals thereon. The machine also includes a charger, an exposure unit, a developing unit and a transfer unit which are arranged around a rotatable body of photosensitive material in a conventional manner. The transfer unit transfers a developed image on the body onto a transfer sheet. The machine also includes a fixing unit in which the transferred image on the transfer sheet is fixed and in which the transfer sheet is momentarily held subsequent to the copying of the original placed on the first surface. Thereafter, the original receptacle is moved to present another original on the second surface into a predetermined exposure position, and the copying operation is repeated for the second original. During the second copying operation, the transfer unit is held inoperative, and the transfer sheet which has been held in the fixing unit is moved into operative association with the developed image on the rotating body for transferring the latter onto the opposite surface of the transfer sheet.

    摘要翻译： 提供一种电子照相复印机，其包括具有用于在其上放置一对原件的第一和第二表面的原始插座。 机器还包括以常规方式布置在感光材料的旋转体周围的充电器，曝光单元，显影单元和转印单元。 转印单元将显影的图像转印到转印纸上。 机器还包括固定单元，其中转印片上的转印图像是固定的，并且在复制放置在第一表面上的原稿之后转印纸被短暂地保持在该定影单元中。 此后，原始插座被移动以将第二表面上的另一原稿呈现为预定的曝光位置，并且针对第二原稿重复复印操作。 在第二复印操作期间，转印单元保持不起作用，并且已经保持在定影单元中的转印纸移动到旋转体上的显影图像的可操作关联，以将其转印到转印纸的相对表面上 。

    Photographic copying apparatus
    2.
    发明授权
    Photographic copying apparatus 失效

    公开(公告)号：US3592538A

    公开(公告)日：1971-07-13

    申请号：US3592538D

    申请日：1969-12-17

    申请人： RICOH KK

    发明人： UKAI TAKESHI

    IPC分类号： G03G15/04 ,  G03G15/11 ,  G03G15/00

    CPC分类号： G03G15/11 ,  G03G15/04036

    摘要： Photographic copying apparatus having a heater employed in conjunction with a lamp for drying the recording element or copying paper and wherein the heater is in circuit with the lamp to permit the preliminary heating of the lamp prior to full lighting thereof so as to reduce the inrush of current to the lamp when full voltage is applied thereto.

    Servo motor control circuit
    3.
    发明授权
    Servo motor control circuit 失效
    伺服电机控制电路

    公开(公告)号：US3924171A

    公开(公告)日：1975-12-02

    申请号：US39517573

    申请日：1973-09-07

    申请人： RICOH KK

    发明人： UKAI TAKESHI ,  YAESHIMA MASAO ,  WATANABE KIMIO

    IPC分类号： G05D3/12 ,  G03B27/32 ,  G05B11/06 ,  H02P7/00 ,  G05B1/06 ,  G05F1/00

    CPC分类号： H02P7/05

    摘要： A control circuit for controlling the rotation of a servo motor comprises a high gain differential amplifier for producing an output corresponding to the difference between a voltage output from a first potentiometer which moves with the servo motor and a voltage output from a second potentiometer which provides a setting for the angle of rotation of the servo motor. The control circuit further includes a high sensitivity switching circuit including programmable unijunction transistors for detecting the output from the differential amplifier to effect rotation of the servo motor in a forward or reverse direction.

    摘要翻译： 用于控制伺服电动机的旋转的控制电路包括高增益差分放大器，用于产生对应于从伺服电动机移动的第一电位计输出的电压与从第二电位器输出的电压之间的差的输出， 设定伺服电机的旋转角度。 控制电路还包括高灵敏度开关电路，其包括用于检测来自差分放大器的输出的可编程单结晶体管，以在正向或反向方向上实现伺服电动机的旋转。

    Apparatus for electrostatic charging of paper in electrophotographic reproduction
    5.
    发明授权
    Apparatus for electrostatic charging of paper in electrophotographic reproduction 失效
    电子照相制版纸静电充电装置

    公开(公告)号：US3699388A

    公开(公告)日：1972-10-17

    申请号：US3699388D

    申请日：1971-05-17

    申请人： RICOH KK

    发明人： UKAI TAKESHI

    IPC分类号： G03G15/02 ,  H02H7/00 ,  H01T19/00

    CPC分类号： H02H7/003 ,  G03G15/0266 ,  G03G15/0291

    摘要： A corona discharge electrode is supplied with voltage from a high frequency power source to produce a corona discharge which strikes a sheet of reproducing paper to charge the same electrostatically. A detection electrode is positioned in the field of the corona discharge and is connected via a resistor and amplifier to the power source to control the same in accordance with the detected corona discharge to maintain the magnitude of the discharge field constant. A switch is connected in the power supply to interrupt connection thereof with the discharge electrode if a spark discharge is produced between the discharge electrode and the paper.

    摘要翻译： 向电晕放电电极供给来自高频电源的电压，以产生电晕放电，该电晕放电冲击一片再现纸以对静电进行充电。 检测电极位于电晕放电的场中，并通过电阻和放大器连接到电源，以根据检测到的电晕放电来控制电极和放大器，以保持放电场的大小恒定。 如果在放电电极和纸之间产生火花放电，则电源中的开关连接到电源中断与放电电极的连接。