CPC B65H 7/10 (2013.01) [B65H 7/14 (2013.01); B65H 7/20 (2013.01); B65H 9/002 (2013.01); B65H 9/20 (2013.01); G02B 17/023 (2013.01); G07D 11/237 (2019.01); G07D 11/40 (2019.01); B65H 2553/412 (2013.01); B65H 2553/414 (2013.01); B65H 2553/416 (2013.01); B65H 2701/1912 (2013.01); G07D 2211/00 (2013.01)] | 18 Claims |
1. A sensing apparatus configured to detect an edge of a paper received in an automated transaction machine (ATM) comprising:
a light emitter positioned along a path of movement of the paper and on a first side of said path, said path defined in the ATM, said light emitter directed to emit light across said path to a second side of said path, said second side of said path the opposite of said first side of said path;
a light detector positioned along said path on said first side of said path with said light emitter, said light detector configured to detect light and emit a signal corresponding to an amount of detected light;
a control circuit configured to control a flow of power to said light emitter and to receive the signal emitted by said light detector;
a light guiding trough positioned on said second side of said path and having first and second faces, each of said first and second faces facing said path, said first face positioned to confront said light emitter and thereby receive light emitted by said light emitter, said second face positioned to confront said light detector and thereby emit light toward said light detector; and
wherein said light emitter and said light detector are offset from each other in a direction transverse to said path of movement of the paper.
|