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METHODS FOR PRODUCING AND/OR TESTING MAGNETIC HEADS USING CLASSIFICATIONS

  • US 20110134559A1
  • Filed: 12/08/2010
  • Published: 06/09/2011
  • Est. Priority Date: 12/09/2009
  • Status: Active Grant
First Claim
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1. A manufacturing method for magnetic heads, comprising:

  • classifying each of a plurality of magnetic heads into one of;

    a first tested head class, and a non-test-candidate head class;

    determining characteristic values of the magnetic heads classified in the first tested head class;

    screening magnetic heads in the first tested head class based on the determined characteristic values of the magnetic heads classified in the first tested head class;

    estimating characteristic values of the magnetic heads classified in the non-test-candidate head class, wherein the estimating is based on the characteristic values of the magnetic heads classified in the first tested head class;

    classifying each of the magnetic heads classified in the non-test-candidate head class into one of;

    a second tested head class, and a non-test head class, wherein the classifying is based on the estimated characteristic values of the magnetic heads classified in the non-test-candidate head class;

    determining characteristic values of the magnetic heads classified in the second tested head class; and

    screening magnetic heads in the second tested head class based on the determined characteristic values of the magnetic heads classified in the second tested head class.

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