发明名称 Optical media detector and method of operation thereof
摘要 An optical media detector, for use in a media transport mechanism, the detector comprising a light source and an optical sensor, is described. The light source and sensor are optically coupled via two distinct optical paths which are formed in part by a pair of optical light guides, each of which is formed into part of a pinch roller adapted to contact or being close to contacting media being transported.
申请公布号 US7194151(B2) 申请公布日期 2007.03.20
申请号 US20040922485 申请日期 2004.08.20
申请人 NCR CORPORATION 发明人 TENNANT ALAN W.;LYONS ERIC G.
分类号 G02B6/00;B65H7/14;G02B6/12;G02B6/42 主分类号 G02B6/00
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