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MAGNETIC COPY SYSTEM

  • US 3,571,527 A
  • Filed: 01/16/1968
  • Issued: 03/16/1971
  • Est. Priority Date: 01/16/1968
  • Status: Expired due to Term
First Claim
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1. A method for producing a duplicate record media having at least one oxide surface from a master record media having at least one oxide surface and a recorded signal pattern in conjunction with magnetic transfer apparatus having provision for clamping at least one of said media during operation, said master and duplicate record media each have comparable longitudinal and transverse dimensions, and said master record media carrying a Boustrophedonic signal pattern having a plurality of signal tracks each separated by a track spacing, comprising the steps of:

  • 1. positioning said master record media in said apparatus with its oxide surface facing a first direction;

    2. positioning said duplicate record media in said apparatus with its oxide surface facing the oxide surface of said master record media in a transverse offset relation with respect to said master record media in order to provide clearance for operation of said clamping means and at least one odd number of track spacings with respect to said master record media in order to insure scanning compatibility of both master and duplicate record media in a utilization device; and

    3. operating said transfer apparatus to effect transfer of said signal pattern from said master record media to said duPlicate record media such operation producing a mirror image of said master signal pattern in said duplicate record media.

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