METHOD AND MEANS FOR THE IDENTIFICATION OF A ROLL

摘要

A method for the identification of rolls, in particular big paper rolls, by means of a code attached to or marked on the end surface of the roll. The code comprises several characters located side by side and is read by a combined optical beam transmitter-receiver, preferably a laser device, scanning a restricted angle in a plane (8). The scanning is adjusted to extend slightly over the end limit of the code at its both ends and the scanning plane is turned until at least one scanning over the entire code (4) is obtained.