| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed matter having more various sub information, and a printed matter inspection device.SOLUTION: A printed matter obtained by printing a main image on a medium includes: a first sub image that is embedded in the main image with an ink which has the same color as that of the main image in a human visual sense, and absorbs light in an infrared wavelength band at a first absorption rate; and a second sub image that is embedded in the main image with an ink which has the same color as that of the main image in a human visual sense, and absorbs light in the infrared wavelength band at a second absorption rate. |
