Automatic document feeder and image forming apparatus including the same
    4.
    发明授权
    Automatic document feeder and image forming apparatus including the same 有权
    自动进纸器和包括其的成像设备

    公开(公告)号:US09075376B2

    公开(公告)日:2015-07-07

    申请号:US13896371

    申请日:2013-05-17

    IPC分类号: G03G15/00

    CPC分类号: G03G15/607 G03G15/70

    摘要: According to an embodiment, an ADF includes: a sheet-feed cover unit; a switch unit to be switched on or off depending on whether the sheet-feed cover unit is open or closed and including a first terminal, to which a first voltage, by which a driving motor is driven, is input, and a second terminal connected to the driving motor; and an open/close-detection circuit unit that includes a first switch circuit and a second switch circuit. The first switch circuit is switched on or off based on a threshold voltage that is larger than a second voltage to be generated in the driving motor by a jammed-document removing motion and smaller than the first voltage. The open/close-detection circuit unit detects that the sheet-feed cover unit is closed when the second switch circuit is energized, but detects that the sheet-feed cover unit is open when the second switch circuit is de-energized.

    摘要翻译: 根据实施例,ADF包括:送纸盖单元; 开关单元,其根据片材供给盖单元是打开还是关闭而被接通或断开,并且包括第一端子,第一端子被驱动驱动电动机驱动的第一电压,并且第二端子连接 到驱动电机; 以及包括第一开关电路和第二开关电路的开/闭检测电路单元。 第一开关电路基于通过卡纸文件移除运动而小于第一电压在驱动电机中产生的大于第二电压的阈值电压来接通或关断。 打开/关闭检测电路单元检测到当第二开关电路通电时供纸盖单元关闭,但是当第二开关电路断电时检测到供纸盖单元是打开的。