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    • 1. 发明授权
    • Paper feed control device
    • 送纸控制装置
    • US4540170A
    • 1985-09-10
    • US651659
    • 1984-09-18
    • Shunichi MasudaKatsushi FuruichiNaomi Takahata
    • Shunichi MasudaKatsushi FuruichiNaomi Takahata
    • B41J11/42B65H5/06B65H7/06B65H7/14G03B27/62B65H7/02
    • G03B27/625B65H7/06B65H7/14
    • The invention provides a paper feed control device having paper feed rollers for feeding a paper sheet such as an original to a predetermined position, a first sensor for detecting the paper sheet, a second sensor for detecting leading and trailing ends of the paper sheet, a microcomputer for controlling the rollers in response to the outputs signals from the sensors, and a compensating circuit for compensating the level of the output signal from the second sensor which is maintained in a non-detecting state until the paper sheet completely passes through the second sensor. Therefore, even if punched holes for filing are formed on the paper sheet, the punched hole may not be detected as the trailing end of the paper sheet, resulting in proper feeding.
    • 本发明提供了一种供纸控制装置,其具有用于将诸如原稿的纸张馈送到预定位置的进纸辊,用于检测纸张的第一传感器,用于检测纸张的前端和后端的第二传感器, 用于响应于来自传感器的输出信号来控制辊的微型计算机,以及补偿电路,用于补偿来自第二传感器的输出信号的电平,该第二传感器维持在非检测状态,直到纸张完全通过第二传感器 。 因此,即使在纸张上形成用于填充的冲孔,也可能无法将冲孔作为纸张的后端检测出来,从而适当地进给。