Multi-Channel Thin-Film Magnetic Head And Magnetic Tape Drive Apparatus With The Multi-Channel Thin-Film Magnetic Head

• US 20100134929A1
• Filed: 12/03/2008
• Published: 06/03/2010
• Est. Priority Date: 12/03/2008
• Status: Abandoned Application

• Current Assignee: TDK Corporation
• Original Assignee: TDK Corporation
• Inventors: Ito, Yuji
• Application Number:
  US12/327,474
• Publication Number:
  US 20100134929A1
• Time in Patent Office: Days
• US Class Current: 360/313
• CPC Class Codes: G11B 5/0083 for parallel information processing, e.g. PCM recording

Abstract

A multi-channel thin-film magnetic head includes a head section provided with a plurality of thin-film magnetic head elements and a sliding surface for a magnetic tape, a slot section running in a direction perpendicular to a magnetic tape transport direction, the slot section being arranged adjacent to the head section in the magnetic tape transport direction, and an outrigger section provided with a sliding surface for the magnetic tape and arranged to separate from the head section by the slot section in the magnetic tape transport direction. The sliding surface of the outrigger section includes a sloped surface with a height that reduces as approaching the head section.

Claims

1. A multi-channel thin-film magnetic head comprising:

a head section provided with a plurality of thin-film magnetic head elements and a sliding surface for a magnetic tape;

a slot section running in a direction perpendicular to a magnetic tape transport direction, said slot section being arranged adjacent to said head section in the magnetic tape transport direction; and

an outrigger section provided with a sliding surface for the magnetic tape and arranged to separate from said head section by said slot section in the magnetic tape transport direction,

said sliding surface of said outrigger section including a sloped surface with a height that reduces as approaching said head section.

2. The multi-channel thin-film magnetic head as claimed in claim 1, wherein said multi-channel thin-film magnetic head further comprises a closure fixed on said plurality of thin-film magnetic head elements of said head section.

3. The multi-channel thin-film magnetic head as claimed in claim 1, wherein said sloped surface includes an inclined surface formed in an area of said sliding surface of said outrigger section near said head section.

4. The multi-channel thin-film magnetic head as claimed in claim 1, wherein said sloped surface includes an inclined surface formed over substantially whole area of said sliding surface of said outrigger section.

5. The multi-channel thin-film magnetic head as claimed in claim 1, wherein said sliding surface of said head section is arranged at a position nearer to said magnetic tape than a head-section side edge of said sliding surface of said outrigger section.

6. The multi-channel thin-film magnetic head as claimed in claim 1, wherein a head-section side edge of said sliding surface of said outrigger section is arranged at a position nearer to said magnetic tape than said sliding surface of said head section.

7. The multi-channel thin-film magnetic head as claimed in claim 6, wherein a height h′

is equal to or lower than a product of d×

tan θ

, where θ

is an inclination angle of said sloped surface with respect to said sliding surface of said head section, h′

is a height of said sliding surface of said head section with respect to said head-section side edge and d is a width of said slot section in the magnetic tape transport direction.

8. The multi-channel thin-film magnetic head as claimed in claim 1, wherein a width d of said slot section in the magnetic tape transport direction is larger than 0.1 mm and smaller than 2.0 mm.

9. The multi-channel thin-film magnetic head as claimed in claim 1, wherein said plurality of thin-film magnetic head elements comprise a plurality of magnetoresistive effect read head elements and a plurality of inductive write head elements.

10. The multi-channel thin-film magnetic head as claimed in claim 9, wherein each of said plurality of magnetoresistive effect read head elements comprises a giant magnetoresistive effect read head element or a tunnel magnetoresistive effect read head element.

11. A multi-channel magnetic tape drive apparatus including a pair of multi-channel thin-film magnetic heads, a magnetic tape facing to said pair of multi-channel thin-film magnetic heads, and a drive system for relatively moving said magnetic tape and said pair of multi-channel thin-film magnetic heads,

each of said pair of multi-channel thin-film magnetic heads comprising:

a head section provided with a plurality of thin-film magnetic head elements and a sliding surface for a magnetic tape;

a slot section running in a direction perpendicular to a magnetic tape transport direction, said slot section being arranged adjacent to said head section in the magnetic tape transport direction; and

an outrigger section provided with a sliding surface for the magnetic tape and arranged to separate from said head section by said slot section in the magnetic tape transport direction,

said sliding surface of said outrigger section including a sloped surface with a height that reduces as approaching said head section.

12. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein each of said pair of multi-channel thin-film magnetic heads further comprises a closure fixed on said plurality of thin-film magnetic head elements of said head section.

13. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, said sloped surface includes an inclined surface formed in an area of said sliding surface of said outrigger section near said head section.

14. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, said sloped surface includes an inclined surface formed over substantially whole area of said sliding surface of said outrigger section.

15. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, said sliding surface of said head section is arranged at a position nearer to said magnetic tape than a head-section side edge of said sliding surface of said outrigger section.

16. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, a head-section side edge of said sliding surface of said outrigger section is arranged at a position nearer to said magnetic tape than said sliding surface of said head section.

17. The multi-channel magnetic tape drive apparatus as claimed in claim 16, wherein, in each of said pair of multi-channel thin-film magnetic heads, a height h′

is equal to or lower than a product of d×

tan θ

, where θ

is an inclination angle of said sloped surface with respect to said sliding surface of said head section, h′

is a height of said sliding surface of said head section with respect to said head-section side edge and d is a width of said slot section in the magnetic tape transport direction.

18. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, a width d of said slot section in the magnetic tape transport direction is larger than 0.1 mm and smaller than 2.0 mm.

19. The multi-channel magnetic tape drive apparatus as claimed in claim 11, wherein, in each of said pair of multi-channel thin-film magnetic heads, said plurality of thin-film magnetic head elements comprise a plurality of magnetoresistive effect read head elements and a plurality of inductive write head elements.

20. The multi-channel magnetic tape drive apparatus as claimed in claim 19, wherein, in each of said pair of multi-channel thin-film magnetic heads, each of said plurality of magnetoresistive effect read head elements comprises a giant magnetoresistive effect read head element or a tunnel magnetoresistive effect read head element.