| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a label having a function of announcing the arrival of an expiration date caused by a change in the color of a release board with the passage of time. Ž<P>SOLUTION: A label piece 2 is temporarily bonded to a release board 3 by an adhesive, and an expiration date warning mark 11 is formed on the backside of the release board 3. In the expiration date warning mark 11, a ground tint is printed by one fixed color even with the passage of time, and a character "usable" is printed thereon by ink changed to the same color as that of the ground tint with the passage of time by a color tone different first from the ground tint. Thus, when the expiration date passes, the character "usable" is concealed behind the ground tint so as to be unreadable. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
