Electrophotographic copying machine
    2.
    发明授权
    Electrophotographic copying machine 失效
    电子照相复印机

    公开(公告)号:US4785328A

    公开(公告)日:1988-11-15

    申请号:US946080

    申请日:1986-12-24

    IPC分类号: G03G15/00 G03G15/04

    摘要: An electrophotographic copying machine has a flash lamp for applying a flash of light to a document to be copied. The copying machine also includes a sensor for detecting whether the flash lamp is energized or not. When there is no signal indicating that the flash lamp is energized even in the presence of a command to energize the flash lamp, a control circuit determines that the flash lamp has failed to emit light at a predetermined exposure timing, and produces an output signal to effect a predetermined operation upon non-energization of the flash lamp. An arrangement for effecting such a predetermined operation may for example be a switch of an erase lamp, a control circuit for controlling operation of a copy counter, a switch of a motor for driving image developing rollers, a control circuit for controlling a developing bias, a switch of an image transfer charger, a control circuit for controlling a separator finger for changing feed paths of travel of an image transfer sheet, a control circuit for controlling a shutter to cover an image transfer charger, or a switch for driving rollers which feed an image transfer sheet.

    摘要翻译: 电子照相复印机具有用于将闪光照射到要复印的文件上的闪光灯。 复印机还包括用于检测闪光灯是否通电的传感器。 当没有指示闪光灯即使在存在对闪光灯通电的命令的情况下也被激活的信号的情况下,控制电路确定闪光灯在预定的曝光定时不能发光,并产生输出信号 在闪光灯不通电时影响预定的操作。 用于实现这种预定操作的装置可以是例如擦除灯的开关,用于控制复印计数器的操作的控制电路,用于驱动图像显影辊的电动机的开关,用于控制显影偏压的控制电路, 图像转印充电器的开关,用于控制用于改变图像转印片的行进的馈送路径的分离器手指的控制电路,用于控制快门以覆盖图像转印充电器的控制电路或用于驱动辊的开关 图像转印表。