| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in that a latent image printed on a non-streak part between barrel-like streaks cannot be visualized in any observation angle, so that printing has to be performed by avoiding the non-streak part, or the width of the latent image streak has to be set wider than the width of the non-streak part.SOLUTION: The invention is configured so that barrel-like pixels are arranged in a checker state or a matrix state. In a direction orthogonal to the streak direction of the latent image streak, there is no non-streak extending over a whole surface of a printing area. |
