Feed detection means connected to a web used to determine fault

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 3/00 (2006.01) B41J 29/46 (2006.01) B41J 35/28 (2006.01) B41M 3/12 (2006.01) G11B 15/32 (2006.01)

Patent

CA 2240238

Printing apparatus for printing on a web of sheet material comprising a printing head, feeding means for moving the printing head and a web of sheet material to be printed upon relative to one another while printing, a donor web bearing a transfer ink, the web lying adjacent the strip of sheet material while printing and movable by the feeding means with the strip of sheet material relative to the printing head to transfer ink in a printed pattern onto the web of sheet material, and feed detection means connected with one of the webs for detecting a fault in the movement of the webs relative to the printing head while printing.

Appareil d'impression sur un matériau d'impression en feuille enroulé sur bobine. L'appareil se compose d'une tête d'impression, de dispositifs d'alimentation déplaçant la tête d'impression et une bande de matériau d'impression, l'une par rapport à l'autre, pendant l'impression; d'une bobine portant l'encre à transférer, la bobine d'alimentation se trouvant à proximité du matériau en feuille pendant l'impression et se déplaçant au moyen des dispositifs d'alimentation, avec le matériau en feuille par rapport à la tête d'impression pour transférer l'encre sur le matériau en feuille enroulé sur bobine, ainsi que de capteurs d'alimentation reliés à l'une des bobines pour déceler les problèmes de déplacement de celles-ci par rapport à la tête d'impression pendant l'impression.

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