| 摘要 |
PROBLEM TO BE SOLVED: To prevent the fraudulent action of causing a token detection sensor to malfunction using a fraudulent implement. SOLUTION: A slot machine has a token path where supplied tokens flow down while rolling. The token path is provided with a token detection sensor group for detecting the tokens. The token detection sensor group includes two upstream side sensors arranged vertically so as to be orthogonal to a token flow-down direction and two downstream side sensors disposed in the same column as the upstream side sensors. The control part of the slot machine selects one of the upstream side sensors and one of the downstream side sensors by drawing at prescribed timing and drives them. When the non-selected sensor detects light, the control part executes error processing. COPYRIGHT: (C)2011,JPO&INPIT
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