Electrophotographic printing apparatus capable of printing images by
electrophotographic processing and its start-up method
    7.
    发明授权
    Electrophotographic printing apparatus capable of printing images by electrophotographic processing and its start-up method 失效
    能够通过电子照相处理印刷图像的电子照相打印设备及其启动方法

    公开(公告)号:US5404213A

    公开(公告)日:1995-04-04

    申请号:US216370

    申请日:1994-03-23

    CPC分类号: G03G15/065 G03G15/50

    摘要: To prevent spurious adherence of toner to the surface of a photosensitive drum during start-up of an electrophotographic printing apparatus, once rotation of the drum and charging of the drum surface to a predetermined potential are initiated, rotation of a developing roller to bring toner into contact with the drum surface is delayed until the charged portion of the drum surface has been rotated around to a position facing the developing roller. Applications of appropriately timed biasing voltages to the developing roller and an image transfer roller are also utilized to prevent spurious toner attraction to the surfaces of the drum and the transfer roller.

    摘要翻译: 为了防止在电子照相打印设备的启动期间调色剂对感光鼓的表面的寄生粘附,一旦滚筒旋转并将鼓表面充电到预定的电位,开始显影辊的旋转以使调色剂进入 与滚筒表面的接触被延迟直到滚筒表面的带电部分已经旋转到面向显影辊的位置。 适当定时的偏置电压对显影辊和图像转印辊的应用也被用于防止假粉末吸引到转鼓和转印辊的表面。

    Device for preventing paper from falling in a transfer device for
electrophotographic recorders
    8.
    发明授权
    Device for preventing paper from falling in a transfer device for electrophotographic recorders 失效
    用于防止纸张掉落在电子照相记录器的转印装置中的装置

    公开(公告)号:US5138396A

    公开(公告)日:1992-08-11

    申请号:US713013

    申请日:1991-06-10

    IPC分类号: G03G15/16

    CPC分类号: G03G15/165

    摘要: A transfer device used in an electrophotographic recorder capable of effectively prevent paper jamming and transfer missing in a transfer process which comprises a guide member of an insulating material disposed at a downstream side wall end of a casing and an insulating member of current interruption disposed at an upstream side wall end of the casing, in which the guide member, even when subjected to heat, stably keeps its rigidly mounted state and prevents the falling of the paper into an opening of the casing, and the insulating member of current interruption minimizes the flow of a transfer current from a charging wire toward a small-diameter rubber roller to prevent the transfer missing.

    摘要翻译: 一种用于电子照相记录器的转印装置,其能够有效地防止在转印过程中缺纸的纸张堵塞和转印,该转印工艺包括设置在壳体的下游侧壁端部处的绝缘材料的引导构件和设置在壳体的电流中断的绝缘构件 壳体的上游侧壁端部,即使在受到热的情况下,引导部件稳定地保持其刚性安装状态并防止纸张落入壳体的开口中,并且电流中断的绝缘构件使流动的最小化 从充电线朝向小直径橡胶辊的转印电流,以防止转印失踪。

    Circuit for driving a display device
    9.
    发明授权
    Circuit for driving a display device 失效
    用于驱动显示设备的电路

    公开(公告)号:US4542379A

    公开(公告)日:1985-09-17

    申请号:US462697

    申请日:1983-01-31

    申请人: Kouichirou Satou

    发明人: Kouichirou Satou

    摘要: A drive circuit for a display device comprises a first input terminal adapted to be connected to receive a drive signal for driving a display device, a second input terminal adapted to be connected to receive a control signal for controlling the driving of the display device, an exclusive OR gate connected to receive the drive signal and the control signals supplied to the input terminals, and an MOS transistor which is turned on and off according to the output level of the OR gate.

    摘要翻译: 一种用于显示装置的驱动电路包括适于被连接以接收用于驱动显示装置的驱动信号的第一输入端子,适于被连接以接收用于控制显示装置的驱动的控制信号的第二输入端子, 连接的异或门接收驱动信号和提供给输入端的控制信号,以及根据或门的输出电平导通和截止的MOS晶体管。

    Electrophotographic recording apparatus including a pivotably mounted
and elastically supported transfer unit and auxiliary roller
    10.
    发明授权
    Electrophotographic recording apparatus including a pivotably mounted and elastically supported transfer unit and auxiliary roller 失效
    电子照相记录装置包括可枢转地安装和弹性支撑的转印单元和辅助辊

    公开(公告)号:US5126796A

    公开(公告)日:1992-06-30

    申请号:US662708

    申请日:1991-03-01

    IPC分类号: G03G15/16 G03G21/16

    摘要: A transfer unit has a plastic end block at each end. The end block includes a bearing for supporting an auxiliary roller, and an arm having at its end portion a pivot received by a lower casing. The bearing and the arm are formed integrally with the end block. A leaf spring located under the transfer unit supports it along with the roller in movable relationship around the pivot. When an upper casing is shut down, a photoreceptor drum supported in the upper casing pushes down the transfer unit against the elastic force of the leaf spring. Since the positions of the transfer unit and the roller are determined with respect to the photoreceptor drum, good duplicativity can be obtained. In this state, a cylindrical spacer serves to secure a predetermined space between the photoreceptor drum and the auxiliary roller.

    摘要翻译: 转运单元在每端具有塑料端块。 端块包括用于支撑辅助辊的轴承,以及在其端部处具有由下壳体接收的枢轴的臂。 轴承和臂与端块一体形成。 位于转移单元下方的板簧支撑着可动关系的滚子与枢轴。 当上壳体关闭时,支撑在上壳体中的感光鼓克服弹簧的弹力推压转印单元。 由于转印单元和辊的位置相对于感光鼓确定,因此可以获得良好的重复性。 在这种状态下,圆柱形间隔件用于固定感光鼓和辅助辊之间的预定空间。