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Apparatus for imprinting an unmarked foil

  • US 6,564,710 B1
  • Filed: 10/29/1999
  • Issued: 05/20/2003
  • Est. Priority Date: 10/31/1998
  • Status: Expired due to Term
First Claim
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1. An apparatus for imprinting an unmarked foil with images which are arranged within sections of the foil of a predetermined length, comprising a printing device through which said foil moves continuously and in which images are imprinted centered on said foil sections, a transport device receiving said foil for transporting said foil in steps of said predetermined length, a cutting device arranged adjacent said transport device for cutting said foil into said sections of said predetermined length, a control unit, a buffer arrangement having an entrance and an exit and being disposed between said printing device and said transport device and including a first foil motion sensor at the exit of said buffer arrangement and a foil length sensor providing a signal to said control unit when the length of the foil between its end in the cutting device and the printing device is a predetermined multiple of said predetermined length, said first foil motion sensor at the exit of said buffer arrangement generating a varying foil motion signal which depends on the discontinuous motion of said transport device which signal is averaged in said control unit to represent the average speed with which said foil leaves said buffer arrangement, and the averaged signal is applied to said printing device so as to operate said printing device at the same average speed at which the foil leaves the buffer arrangement.

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