| 摘要 |
PROBLEM TO BE SOLVED: To feed a paper tray having no flange part formed thereon using an automatic tray feeding device of a structure to hook a tray by a hooking claw by respectively forming a cut-out hole at least in a set of side surface parts opposite to each other of the paper tray. SOLUTION: A rectangular bottom surface part 1, a plurality of side surface parts 4 respectively extended from sides 2 and 3 thereof, a cut-out hole 5 formed in a plurality of the side surface parts 4, or a blank having an sticking piece 6 and a tongue piece 7 are cut in one cardboard, and integrated with each other by providing folds 8a, 8b and 8c at specified parts. In assembling a tray, the folds 8a and 8b are folded, side surface parts 4a and 4b are erected from a peripheral edge of the bottom surface part 1, and the sticking piece 6 and the tongue piece 7 extended from the other side surface part 4b are folded at the fold 8c and stuck to one side surface part 4a adjacent thereto in a condition where a lower edge part 7a of the tongue 7 is substantially agreed with an upper edge of the cut-out hole 5.
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