发明名称 Document Inspection System
摘要 Document inspection system comprising a transport system for transporting documents along a transport path (12) through an inspection station. At least one ultrasonic inspection apparatus at the inspection station, the apparatus including ultrasonic transmitting and receiving transducers (42,44) arranged on opposite sides of the transport path, and a processing system for monitoring ultrasonic signals received by the receiving transducer. An ultrasonic absorbing material (300) is provided around the transducers and facing the transport path for absorbing Document guide apparatus (312,314), having a lower coefficient of friction than the absorbing material, extends partially over the absorbing material (300) so as to prevent documents contacting the absorbing material in use while leaving the absorbing material exposed to the transport path at least adjacent the transducers.
申请公布号 US2009260440(A1) 申请公布日期 2009.10.22
申请号 US20060989227 申请日期 2006.08.08
申请人 DE LA RUE INTERNATIONAL LIMITED 发明人 PELLATON CYRIL;BLAIR RONALD BRUCE;EDWARDS JERRY;MOUSER JOHN
分类号 G01N29/11;G07D7/08 主分类号 G01N29/11
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