| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine in which opening of a substrate case may be easily determined even in a case where a seal pasted on the substrate case is detached and then pasted again.SOLUTION: A seal 400 for maintaining the sealed state of a base member and a cover member constituting a substrate case capable of storing a game control board comprises first solvent use indicating parts 450A to 450D indicating a sign in which solvent A had been used when the solvent A is used and second solvent use indicating parts 460A to 460D indicating a sign in which solvent B had been used when the solvent B is used. The first solvent use indicating parts 450A to 450D and the second solvent use indicating parts 460A to 460D are printed on positions where they do not overlap with corner parts of the substrate case when the seal 400 is pasted on the substrate case. The seal 400 also comprises a seal substrate 401 showing a different color (for example, blue) from a color (for example, red) which is shown by aging. |
