| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for printing extended information using colors by a higher information density than that of simple black and white printing. SOLUTION: A method for printing information on a medium, comprising a step of receiving first data representing first information, a step of receiving second data representing second information, a step of attaching a first color mark according to the first data, and a step of printing the first information and the second information on the medium and attaching at least a second color mark according to the second data so as to be detected from the printing medium as the individual first information and second information, is provided.
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