| 摘要 |
PROBLEM TO BE SOLVED: To differentiate a copied article at a glance by a color copier and to allow the article to be easily discriminable by printing a ground pattern group and a design pattern so that the pattern group surrounds the design pattern, and specifying numbers of lines and the gradations of the pattern group and the design pattern. SOLUTION: In a printed product 1 such as a commuter pass or the like, a thermal transfer image receiving layer is provided on a rear surface of a support, and printed thereon. In this case, the print is conducted by gravure printing so as to have a ground pattern group 5 and a design pattern 6, and formed so that the group 5 and the pattern 6 are not substantially continuously superposed and the group 5 surround the pattern 6. In this case, the group 5 is formed so that number of lines of the group 5 is 150 or more, an areal rate is 20 to 40% and a gradation is 90% or more. A printing density of a design pattern sealed part is substantially lowered than that of a ground pattern sealed part, and the group is formed so that number of lines of the pattern 6 is 150 or more and gradation is 30 to 50% or more. |
