发明名称 Double document detection system
摘要 A system for detecting the presence of more than one document along a path during the processing of the documents. A capacitance is introduced by the plural documents in contact with each other and wherein a delay signal is combined with an original signal to generate a multiple document detect signal for indicating the presence of the multiple documents.
申请公布号 US4243216(A) 申请公布日期 1981.01.06
申请号 US19790047460 申请日期 1979.06.11
申请人 NCR CANADA LTD. - NCR CANADA LTEE 发明人 MAZUMDER, ALI T.
分类号 B65H7/12;B42C19/08;G06K13/067;(IPC1-7):B65H7/06 主分类号 B65H7/12
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