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:
Sep. 13, 2016
Filed:
Jul. 06, 2015
International Business Machines Corporation, Armonk, NY (US);
Giovanni Cherubini, Rueschlikon, CH;
Johan B. C. Engelen, Rueschlikon, CH;
Simeon Furrer, Reuschlikon, CH;
Mark A. Lantz, Rueschlikon, CH;
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A write head for writing a servo pattern to a magnetic tape medium includes a first coil configured to generate a first magnetic flux when applying an electric current to the first coil, a second coil configured to generate a second magnetic flux when applying an electric current to the second coil, and a pole piece structure configured to guide the generated magnetic flux. The pole piece includes a first ring structure for guiding the first magnetic flux, a second ring structure for guiding the second magnetic flux, and a common section of the first and the second ring structure which common section is arranged between the first coil and the second coil. The write head further includes a section containing a gap in each of the first ring structure and the second ring structure. The magnetic flux is oriented in opposite directions across the two gaps.