Image reading apparatus
    3.
    发明授权
    Image reading apparatus 失效
    图像读取装置

    公开(公告)号:US5287198A

    公开(公告)日:1994-02-15

    申请号:US719500

    申请日:1991-06-24

    CPC分类号: H04N1/40056

    摘要: An image reading apparatus applicable to, for example, an electronic copier or a facsimile transceiver for reading an image by use of CCDs or similar reading elements. A circuit included in the apparatus and not having a time constant is driven at the same time as the start of an image reading operation, while a circuit having a time constant is driven earlier by taking account of the time constant. The apparatus, therefore, reduces electromagnetic interference and saves power while eliminating defective image signals.

    摘要翻译: 一种图像读取装置,适用于例如使用CCD或类似读取元件读取图像的电子复印机或传真收发器。 包含在装置中并且不具有时间常数的电路在图像读取操作的开始的同时被驱动,而具有时间常数的电路通过考虑时间常数被较早地驱动。 因此,该装置降低了电磁干扰并节省了电力,同时消除了有缺陷的图像信号。

    Developing device
    4.
    发明授权
    Developing device 失效
    开发设备

    公开(公告)号:US4669859A

    公开(公告)日:1987-06-02

    申请号:US477823

    申请日:1983-03-22

    IPC分类号: G03G15/06 G03G15/10

    CPC分类号: G03G15/065

    摘要: A developing device for developing an electrostatic latent image formed on an imaging surface includes a developing electrode disposed opposite to the imaging surface and a control circuit for controlling the potential of the developing electrode. In one form, when the control circuit causes the developing electrode to be electrically floating, the upper limit of the voltage excursion is set at different levels as desired. In another form, the control circuit includes a sensor for sensing the potential of the imaging surface thereby allowing to carry out so-called fixed bias or auto-bias developing modes. In a further form, the mode of developing operation is automatically set depending upon the position of a pressure plate which is to be placed on an original for keeping the original in position during copying process.

    摘要翻译: 用于显影形成在成像表面上的静电潜像的显影装置包括与成像表面相对设置的显影电极和用于控制显影电极的电位的控制电路。 在一种形式中,当控制电路使显影电极电浮动时,根据需要将电压偏移的上限设定在不同的水平。 在另一种形式中,控制电路包括用于感测成像表面的电位的传感器,从而允许执行所谓的固定偏压或自偏压显影模式。 在另一种形式中,显影操作的模式根据要放置在原稿上的压板的位置自动设定,以便在复印过程中将原稿保持在原位置。