US 11,741,992 B2
Management of head and media dimensional stability
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); and Steven M. Wallace, Tucson, AZ (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by International Business Machines Corporation, Armonk, NY (US)
Filed on Jul. 31, 2019, as Appl. No. 16/528,458.
Application 16/528,458 is a continuation of application No. 16/181,210, filed on Nov. 5, 2018, granted, now 10,460,757.
Prior Publication US 2020/0143830 A1, May 7, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. G11B 5/596 (2006.01); G11B 15/18 (2006.01); G11B 5/008 (2006.01)
CPC G11B 15/18 (2013.01) [G11B 5/00813 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for characterizing a magnetic recording tape, the method comprising:
measuring, using a magnetic head having two servo readers of known pitch, a servo band difference at various locations along a length of a magnetic recording tape wherein each servo band difference measurement is based on position measurements of both servo readers; and
storing the servo band difference measurements and/or derivatives thereof in association with the magnetic recording tape.