REGISTRATION CONTROL

专利名称：REGISTRATION CONTROL发明人：NELSON FRIBERG申请号：AU7667381申请日：19811021公开号：AU529747B2公开日：19830616

摘要：A registration control circuit for a printed label cutoff machine controls boththe location of the cut by performing a phase adjustment and the length of the individuallabels by performing a base speed adjustment. A strip of labels have eyemarks printedthereon for defining the location at which the individual labels are to be cut. An opticalscanner is positioned adjacent the labels and generates a scanner pulse upon detectionof an eyemark. The control circuit includes a setup control for automatically running themachine into registration from an initial setup position. The setup control functions togenerate a reference pulse a predetermined distance before the scanner is expected tosee an eyemark. When the eyemark is detected within a designated window area thecontrol utilizes the scanner pulse and the reference pulse to calculate the phase errorfor each label and generate a phase correction signal proportional to the actual phaseerror. Individual phase error signals are combined to determine the average phase errorwhich has occurred over the last predetermined number of labels. The average phaseerror is representative of an average base speed error. If the average phase errorexceeds a predetermined threshold, the control will generate a base speed correctionsignal proportional to the average base speed error. When the eyemark is detectedoutside the designated window area, the control will attempt to bring the eyemark within

the window area by performing a full speed phase adjustment. If, after a predeterminednumber of consecutive labels, the eyemark has not been moved within the window area,the control will check the base speed and perform a base speed adjustment. The controlalso includes an alphanumeric display for displaying to an operator, on a prioritized basis,messages indicating the operating status of the machine.

申请人：OWENS-ILLINOIS, INC.

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