| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a card having a scratch layer printed with code data capable of making the value of the card double by varying the code data printed on the card using a scratch technique used in a public lottery system in a game machine using a premium card printed with the code data such as QR codes. <P>SOLUTION: A character picture 2 is printed on the center upper part of a card base 3. A QR code (B) 4 is printed underneath thereof. A scratch layer 5 is formed so as to cover the QR code (B) 4. A QR code (A) 6 is printed on the scratch layer 5. The scratch layer 5 can be scratched off with a nail tip or a member having a spired end, and then a hidden QR code (B) 4 is appeared when scratching off. The card is used as the QR code (A) 6 printed on the scratch layer as it is or as the QR code B (4) as scratching off the scratched layer. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
