| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a Pachinko game machine preventing the execution of presentation based on a detection signal of an optical sensor against a player's intention due to the optical sensor being turned on by light reflected by a transparent plate when the optical axis direction of light emitted from the optical sensor is orthogonal to the transparent plate in the case of opening/closing an opening/closing door due to clogging or the like with balls in a game board. Ž<P>SOLUTION: The Pachinko game machine includes an opening/closing door SW3b detecting whether the opening/closing operation of the opening/closing door 3 is performed. A presentation control means 36 has a presentation forbidding means 36a that forbids presentation performed by a presentation means 35 based on the detection signal of an infrared sensor 18 when the opening/closing door SW3b detects that the opening/closing operation of the opening/closing door 3 is performed. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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