Multi-channel thin-film magnetic head, magnetic tape drive apparatus with the multi-channel thin-film magnetic head and manufacturing method of multi-channel thin-film magnetic head
AssigneeTDK Corporation
InventorsSeiji YARI, Yasufumi UNO, Yuji ITO, Hideaki SATO, Nozomu HACHISUKA
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Abstract
A multi-channel thin-film magnetic head includes a substrate, a plurality of thin-film magnetic head elements formed on the substrate, a closure fixed onto the plurality of thin-film magnetic head elements, a protection film laminated on a whole area of a TBS of the plurality of thin-film magnetic head elements and the closure, and many micro-grooves formed in a surface of the protection film.
Claims30
A multi-channel thin-film magnetic head comprising:
- a substrate;
- a plurality of thin-film magnetic head elements formed on said substrate;
- a closure fixed onto said plurality of thin-film magnetic head elements;
- a protection film laminated on a whole area of a tape bearing surface of said plurality of thin-film magnetic head elements and said closure;
- and
- many micro-grooves formed in a surface of said protection film.
A multi-channel magnetic tape drive apparatus including a multi-channel thin-film magnetic head, a magnetic tape facing to said multi-channel thin-film magnetic head, and a drive system for relatively moving said magnetic tape and said multi-channel thin-film magnetic head,
- said multi-channel thin-film magnetic head comprising:
- a substrate;
- a plurality of thin-film magnetic head elements formed on said substrate;
- a closure fixed onto said plurality of thin-film magnetic head elements;
- a protection film laminated on a whole area of a tape bearing surface of said plurality of thin-film magnetic head elements and said closure;
- and
- many micro-grooves formed in a surface of said protection film.
A manufacturing method of a multi-channel thin-film magnetic head, comprising the steps of:
- forming a plurality of thin-film magnetic head elements formed on a substrate;
- fixing a closure fixed onto said plurality of thin-film magnetic head elements of said substrate;
- forming a row bar with the thin-film magnetic head elements aligned along a longitudinal direction of said row bar, by cutting said substrate and said closure fixed to said substrate;
- and
- forming a protection film on a whole area of a tape bearing surface of said row bar, many micro-grooves running in random directions being formed on a surface of said protection film.
A manufacturing method of a multi-channel thin-film magnetic head, comprising the steps of:
- forming a plurality of thin-film magnetic head elements formed on a substrate;
- forming a chip bar with the thin-film magnetic head elements aligned along a longitudinal direction of said chip bar, by cutting said substrate;
- fixing a closure bar to said chip bar to form a row bar;
- and
- forming a protection film on a whole area of a tape bearing surface of said row bar, many micro-grooves running in random directions being formed on a surface of said protection film.
Dependencies are inferred from the claim text.