Patent ID: 6164848
Filing Date: 2000-12-26
Classification: B41F,G03G

Abstract:
A method for printing a print image on an endless stock in relation to a predetermined position in an electrographic printer, comprising the steps of:using a stepped motor controlled by a current pulse sequence to drive a transport apparatus that drives the endless stock by one of friction and positively locked connection, said transport apparatus transports the endless stock past a transfer printing station according to a predetermined print speed,producing print images by a print control unit in a print process,successively printing on the endless stock at the transfer printing station with the print speed,producing a print image beginning signal at a beginning of printing of a print image by the print control unit,starting a count process of clock signals in a counter by said print image beginning signal,scanning the endless stock for markings that are present at regular intervals for positioning of the print images in a direction of transport, said scanning step producing a marking signal when a marking is detected,interrupting the count process upon one of occurrence of the marking signal and occurrence of a fixed number of marking signals,comparing a count result with a target value that corresponds to a counter state given offset-free positioning of the print images in relation to the markings,setting a frequency of a current pulse sequence dependent on a result of said comparing step including the frequency for the current pulse sequence by a pulse generator clocked with a basic frequency, said pulse generator outputting the current pulse sequence at an output side with a frequency related to the basic frequency by a whole number divider value, anddefining the whole number divider value dependent on the result of said comparing step.