| 摘要 |
PROBLEM TO BE SOLVED: To allow an improvement in a manufacturing efficiency of a sheet and an improvement in a printing speed via a smooth sheet supply (particularly via a continuous sheet supply) at the time of using to be suitably compatible. SOLUTION: The sheet is provided by constituting by laminating a printing base 1 and a backup base 2, providing cutouts 12a, 12b at a predetermined region 11 of the base 1, and releasing a release piece 43 of an opening 21 for rear surface printing at a site corresponding to an inside from the region 11 of the base 2. In this case, the pieces 43 are integrally released in a coupling direction (X-axis direction) in a state in which the pieces 43 are connected via coupling pieces 41, 42 to be released from between adjacent openings 21. The pieces 41, 42 are set to a narrow width so as to retain at the base 1 side in a state in which the base 2 substantially backs up the cutout 12b of a width direction (Y-axis direction) perpendicularly crossed with the coupling direction.
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