IMPROVEMENTS IN OR RELATING TO CUTTING APPARATUS

摘要

A cutter for cutting transversely continuously advancing sheet material is mounted for movement along a support extending across the sheet. A first detector detects the advancing position of the sheet and a second detector detects the position of the cutter along the support. Signals from the detectors are used to control drive means for moving the cutter along the support so that the cutter and sheet move in synchronism. Means is also provided to detect the speed of the sheet and speed of the cutter and provide control signals which are also used in controlling the cutter drive means.