| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for forming fine characters and graphics of two-dimensional codes or the like on the surfaces of a matter to be printed such as ink blurring paper and a transparent body or the like on which laser marking can not be directly executed. <P>SOLUTION: On the surface of a transparent plastic bag 10, a beltlike printing surface 4 is formed using black ink, on which a laser beam is momentarily radiated with a laser marker to partially sublimate the ink film 6 to remove it, leaving the part as a white cell 2b and the part left with the ink film 6 as a black cell 2a to form the two-dimensional code 1. <P>COPYRIGHT: (C)2004,JPO |
