B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
B41F 19/06 (2006.01) B44C 1/17 (2006.01)
Patent
CA 2266646
A technique and machine for transferring discrete areas of material, such as hot stamping foil (F), from a carrier onto positions spaced apart along a substrate (5), such as paper. The carrier is dispensed at a rate that is much less than the speed of movement of the substrate. During transfer, a segment of the carrier is moved at the same speed as the substrate while, in between such material transfers, the speed of the carrier is sharply reduced and even reversed in direction in order to maintain the average speed of this carrier segment equal to the reduced speed at which the carrier is being dispensed. This is accomplished by a shuttle mechanism (18) that is moved by its own motor, under control of a microprocessor-based motor control system, in synchronism with the speed of the substrate and transfer operations. This significantly improves the utilization of the material on the carrier, with an improved flexibility to adapt to various substrate speeds and ease of implementation in machinery.
Technique et machine permettant de transférer des zones discontinues de matériau, tel qu'une feuille à marquer à chaud (F), depuis un support jusqu'à des positions espacées le long d'un substrat (5), tel que du papier. Le support est distribué à une cadence très inférieure à la vitesse de déplacement du substrat. Durant le transfert, une partie du support est déplacée à la même vitesse que le substrat tandis que, entre les transferts, la vitesse du support est brusquement réduite et même inversée en ce qui concerne sa direction, de façon à maintenir la vitesse moyenne de cette partie du support égale à la vitesse réduite à laquelle le support est distribué. Ceci se fait au moyen d'un mécanisme navette (18) déplacé par son propre moteur, sous le contrôle d'un système de commande de moteur basé sur un microprocesseur, en synchronisme avec la vitesse du substrat et les opérations de transfert. Ce procédé améliore sensiblement l'utilisation du matériau sur le support; il est souple, ce qui permet de l'adapter à diverses vitesses du substrat, et facile à mettre en oeuvre dans une machine.
Cassan Maclean
Total Register Inc.
LandOfFree
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