The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Nov. 05, 2018
International Business Machines Corporation, Armonk, NY (US);
Kevin B. Judd, Tucson, AZ (US);
Randy C. Inch, Tucson, AZ (US);
Eiji Ogura, Yokohama, JP;
Ernest S. Gale, Tucson, AZ (US);
Pamela R. Nylander-Hill, Tucson, AZ (US);
Dale A. Christiansen, Tucson, AZ (US);
Paul M. Greco, Tucson, AZ (US);
Kevin D. Butt, Tucson, AZ (US);
Steven M. Wallace, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for characterizing a magnetic recording tape of a tape cartridge, according to one approach, includes measuring, using a magnetic head having servo readers of known pitch, a servo band difference at various locations along a length of a magnetic recording tape of a tape cartridge. The servo band difference measurements and/or derivatives thereof are stored in association with the tape cartridge. This procedure creates a characterization of the magnetic recording tape that is useful for assessing aging of the magnetic recording tape, as well as improving subsequent reading and/or writing operations.