Patent ID: 6277230
Filing Date: 2001-08-21
Classification: B41F,B41P,Y10S,Y10T

Abstract:
A method for efficiently using media that can be stamped on a substrate, comprising the steps of:providing the media with a first velocity component from a feedroller;providing the media with a second velocity component that is a function of a velocity of a shuttle, the shuttle moving linearly with the velocity being variable and periodic;urging the media against a substrate, the media and the substrate having same velocity, during the urging, in a stamping area of a cylinder with at least one die, the substrate having a greater average velocity than an average velocity of the media; andmaintaining a registration between the media and the substrate via a control arrangement by detecting a position of at least one of at least one registration mark on the media, the feedroller and the cylinder and by modifying a gear ratio to reduce errors in the registration based upon the detected position, the gear ratio representing a ratio between a cycle on the media and a cycle on the substrate,wherein the step of maintaining the registration includes the steps of calculating a pitch error, filtering the pitch error, calculating a new expected pitch length and determining a new gear ratio.