| 摘要 |
PROBLEM TO BE SOLVED: To make the identification code for administration provided in slips inconspicuous and also to facilitate confirmation of whether a plurality of slips accumulated at every stage of the progress of accumulation are properly arranged in the accumulation process of accumulated articles, and to adjust the appearance of the slips, and to obtain delivery articles in which the slips are properly accumulated. SOLUTION: Each of a plurality of slips 21, 22, 23 lying one over another is provided with an identification code 24 formed by transparent infrared stealth ink emitting infrared rays by infrared excitation in a position in which they are slightly shifted from each other in a slip accumulated state. The identification code 24 of each of the slips 21, 22, 23 emitting infrared rays by infrared excitation can be read out on slip accumulation.
|
