| 摘要 |
The present invention provide a planographic printing plate (2) cutting method for cutting a sheaf (1) of a plurality of planographic printing plates (2) by pressing down a cutting blade (12), wherein a moving speed of an edge of the cutting blade (12) moving across the sheaf (1) of the planographic printing plates (2) is equal to or not less than 205 mm/s but equal to or not more than 260 mm/s. Therefore, the sticking of aluminum to the edge of the cutting blade (12) is prevented and thereby preventing from damaging the cut faces of the planographic printing plate (2), even if the large number of the planographic printing plate (2) are cut.
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