Triggering circuit for series connected flash lamps
    1.
    发明授权
    Triggering circuit for series connected flash lamps 失效
    串联闪光灯的触发电路

    公开(公告)号:US4899087A

    公开(公告)日:1990-02-06

    申请号:US180680

    申请日:1988-04-08

    IPC分类号: H05B41/34

    CPC分类号: H05B41/34 Y10S315/05

    摘要: Lamp operating voltage levels are reduced by using a boost circuit to initiate a triggering sequence in one of two lamps connected in series. The boost circuit is connected across one of the lamps at a connector point common to the two lamps. In a preferred embodiment, trigger pulses are applied sequentially to each lamp, the boost circuit voltage contained in an associated capacitor is discharged through the first triggered lamp, causing it to begin conduction. Most of the voltage from a main storage capacitor then becomes available to break down the second lamp.

    摘要翻译: 通过使用升压电路在串联连接的两个灯中的一个灯中启动触发顺序来降低灯的工作电压电平。 升压电路以两个灯共用的连接点连接在一个灯之间。 在优选实施例中,触发脉冲依次施加到每个灯,包含在相关联的电容器中的升压电路电压通过第一触发灯放电,使其开始导通。 主存储电容器的大部分电压随后可用于分解第二个灯。

    Document reproduction device utilizing a selective color illuminator
    3.
    发明授权
    Document reproduction device utilizing a selective color illuminator 失效
    使用选择性彩色照明器的文件再现装置

    公开(公告)号:US4519703A

    公开(公告)日:1985-05-28

    申请号:US514372

    申请日:1983-07-15

    摘要: A selective color copyability illuminator includes a pair of lamps having complementary spectral emission. The ratio of the lamp outputs are adjustable to enhance a first color of an original to be copied while suppressing the second color. The power input to the lamps is also continually adjustable to maintain a desired exposure level at an imaging plane. In a preferred embodiment, a dichroic reflector is utilized with each lamp to enhance system efficiency.

    摘要翻译: 选择性彩色可复制照明器包括具有互补光谱发射的一对灯。 灯输出的比率是可调节的,以便在抑制第二颜色的同时增强要复制的原稿的第一颜色。 输入到灯的功率也是连续可调的,以便在成像平面上保持期望的曝光水平。 在一个优选实施例中,与每个灯一起使用二向色反射器以提高系统效率。

    Electrophotographic reproduction machine with document exposure system
directly coupled to ac line input
    4.
    发明授权
    Electrophotographic reproduction machine with document exposure system directly coupled to ac line input 失效
    电子照相复印机与文档曝光系统直接耦合到交流线路输入

    公开(公告)号:US4794422A

    公开(公告)日:1988-12-27

    申请号:US125795

    申请日:1987-11-27

    IPC分类号: G03G15/04 G03G15/20

    摘要: In a full-frame flash electrophotographic printing machine, an imaging system is provided which incorporates a flash lamp directly coupled to an ac line input to enable document exposure. The imaging system also includes a lens whose movement is synchronized with a moving photoreceptor so that an exposure occurs registered at the same image area of the photoreceptor. The invention further includes circuit means for detecting zero crossing points of the line voltage and for generating signals which are used to trigger the lamp into operation at some point during an 8 msec, half cycle of line operation. Further circuit means are provided for controlling exposure levels to conform to detected density of the document being copied. In a second embodiment, the control circuitry is used to couple the ac line into a flash fuser assembly to fuse a transferred image on an output record medium.

    摘要翻译: 在全帧闪光电子照相印刷机中,提供了一种成像系统,其包括直接耦合到AC线输入的闪光灯,以实现文档曝光。 成像系统还包括其运动与移动感光体同步的透镜,使得在感光体的相同图像区域登记曝光。 本发明还包括电路装置,用于检测线电压的过零点,并且用于产生用于在8毫秒,半周期的线路操作期间的某一点触发灯投入运行的信号。 提供了进一步的电路装置,用于控制曝光水平以符合被检测文件的检测密度。 在第二实施例中,控制电路用于将ac线耦合到闪光定影组件中,以将转印的图像熔合在输出记录介质上。

    Phase controlled regulated power supply
    5.
    发明授权
    Phase controlled regulated power supply 失效
    相控稳压电源

    公开(公告)号:US4423478A

    公开(公告)日:1983-12-27

    申请号:US285236

    申请日:1981-07-20

    IPC分类号: G05F1/56 H05B39/04 G05F1/64

    CPC分类号: H05B39/042 Y02B20/14

    摘要: A circuit is provided for regulating the application of power to a load which is relatively insensitive to rapid power fluctuation of the type exemplified by typical AC line sources. In one embodiment, an AC line source is applied at a controlled rate to a tungsten lamp whose operation is controlled by a transistor switching network. The transistor operation, in turn, is controlled by comparing a portion of the rectified signal with a signal proportional to the light output of the lamp.

    摘要翻译: 提供了一种用于调节对典型AC线源所示类型的快速功率波动相对不敏​​感的负载的功率的施加电路。 在一个实施例中,将AC线源以受控速率施加到钨灯,其操作由晶体管切换网络控制。 通过将整流信号的一部分与与灯的光输出成比例的信号进行比较来控制晶体管操作。