Verfahren zum Abtrennen eines Blattes für ein Zeichengerät

摘要

In case a long size sheet which is sandwiched by a drive roller and a pressure roller and its tip portion is suspended downwardly with its dead weight from the sheet support surface is cut off in a straight line in a crossing direction with a cutter pen of a plotter capable of shifting the sheet in a crossing direction, firstly, the sheet is cut off in a crossing direction with the cutter pen leaving a predetermined region at the center portion of the sheet. Next, a half-cut or perforation work is applied to the predetermined region at the center portion, and then, the drive roller is rotated in the positive or reverse direction, and the sheet transfers back and forth along its longitudinal direction, and the region of the sheet where the drawing has been performed is shaken off from the other portion of the sheet by the transfer, and thus, the cutting operation of the sheet is completed.