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:
Dec. 18, 2012
Filed:
Dec. 20, 2010
Diane L. Brown, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Chang-man Park, Mountain View, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Eileen Yan, San Jose, CA (US);
Diane L. Brown, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Chang-Man Park, Mountain View, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Eileen Yan, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method for manufacturing a magnetic tape head having a data sensor and a servo sensor. The data sensor and servo sensor are each separated from first and second magnetic shields by a non-magnetic gap layer, and the gap thickness for the servo sensor is larger than the gap thickness for the data sensor. The method involves depositing a first gap layer over shield structures, then depositing a second gap layer using a liftoff process to remove the second gap layer over the data sensor region. A plurality of sensor layers are then deposited, and a stripe height defining mask structure is formed over the data and servo sensor regions, the mask having a back edge that is configured to define a stripe height of the data and servo sensors. An ion milling is then performed to define the stripe height and to remove gap material from the field.