Feed control apparatus of unlabelled continuous material for laser scribing

摘要

The control device has the printing fields (4) of the multilaminar endless printing belt (5) made with internal-system individual marking of the printing fields by means of the laser printing system. The effective printing fields (17) of a block length (8) of the belt are marked by laser markers applied by the laser printing system. The effective printing fields are fixed in position in the feed direction (10) of the belt by means of sensors (2) between the laser marks (1) and the developing mandrel to identify the laser markers. With congruent position of laser markers and sensor, a control magnitude is produce to drive the belt for the required extent.