| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine where invisible marks can be left when a board box is unsealed unlawfully. SOLUTION: A Pachinko machine 1 includes: a circuit board 90 where ROM is mounted; and a board box 50 storing the circuit board 90 by a box body 51 and a cover body 52, wherein the Pachinko machine includes a first sealing part 53 formed on the cover body 52 and having a first hole 54a; a second sealing part 56 formed on the box body 51 and having a second hole 57a connected to the first hole 54a; a caulking member 110 shaped like a cylinder having powder of magnetic resonance material on the surface; and a one-way screw 120 for fastening the caulking member 110 disposed in the second hole 57a, the box body 51 and the cover body 52. COPYRIGHT: (C)2008,JPO&INPIT
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