| 摘要 |
PROBLEM TO BE SOLVED: To transfer with little collision even at an end of a plate by disposing cut-outs extended toward an inside of a plate from a bending line of a fixed tongue piece so that an operating tongue piece for containing a corresponding tongue piece of a first end of the plate is conformed to the cut-out with the result that the tongue piece is engaged with the cut-out in a tooth row-like state in a fixed state. SOLUTION: Both beveled ends 3, 4 of a plate 2 have many cut-outs 31, 32 of a width b4 of, for example, 60 mm over the entire width of the plate 2. Accordingly, the beveled ends 3, 4 are formed by many fixed tongue pieces 33, 34 or another engaging tongue pieces. The pieces 33, 34, for example, have lengths 13 of 20 mm and widths b3 of 60 m. Printing ends 17 are formed together with the flatly disposed plate 2 at an angleγof, for example, 135 deg. and formed at an angleδof, for example, 45 deg. at a print starting end 16. The ends are alternately formed with the pieces 33, 34. The angleδat the starting end is formed at an acute angle, and the angleγof the finishing end is formed at an obtuse angle.
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