| 摘要 |
PROBLEM TO BE SOLVED: To provide various kinds of cards with identification marks added, with which truth/false can be easily and surely judged and forgery is made difficult. SOLUTION: On the surface or a plastic member's card 1, a title 2 of '○○card' and a member's name indication 3 are printed and displayed, and a member's number 4 and an identification mark 5 corresponding to this member's number 4 are provided by laser working. Then, for the member's number 4, a serial number which is added in the order of card issue is displayed in a visually recognizable size and on the other hand, the identification mark 5 is formed in such a small size as forms can not be identified while making alphabets correspondent to respective numerals from 0 to 9. |
