| 摘要 |
PROBLEM TO BE SOLVED: To enable an operator to visually recognize the time when ink reaches a desirable cured state.SOLUTION: The ink configuring a printed layer P1 related to image data is exposed to ultraviolet light having an initial irradiation amount for obtaining an outer surface of the ink, wherein the outer surface of the ink proceeds to a desired cured state from an initial cured state corresponding to an exposure amount of ultraviolet light caused by: reaching time corresponding to time point information or term information related to a printed layer P2; and then elapse of time. A printing head 101 prints the time information related to the time point information or the term information on a part different from the image data, of a medium 104 to be printed as the printed layer P2. |
