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:
Mar. 22, 2011
Filed:
Apr. 19, 2007
Masayuki Kurita, Kanagawa, JP;
Toshiya Shiramatsu, Kanagawa, JP;
Masanori Tanabe, Kanagawa, JP;
Takayoshi Ohtsu, Kanagawa, JP;
Masayuki Kurita, Kanagawa, JP;
Toshiya Shiramatsu, Kanagawa, JP;
Masanori Tanabe, Kanagawa, JP;
Takayoshi Ohtsu, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands, B.V., Amsterdam, NL;
Abstract
According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusion attributable to heat generated by a recording current or environmental temperature. A magnetic head slider includes a thin-film head unit including a read element, a heater having a thin heating line extended above and below the read element, a write element, and an insulating layer of alumina (AlO) or the like insulating those components. The thin heating line of the heater is formed from a thin resistive film of NiCr or the like. The thin heating line of the heater is extended above and below the read element so as to meander in a zigzag shape in a direction perpendicular to the device forming surface. The thin heating line has a thickness between about 0.1 and 0.2 μm, a width between about 1 and 3 μm, a length of about 100 μm, and a resistance between about 50 and 500 Ω.