Magnetic head slider

• US 6,249,402 B1
• Filed: 03/08/1999
• Issued: 06/19/2001
• Est. Priority Date: 03/12/1998
• Status: Expired due to Fees

• Current Assignee: Toshiba Storage Device Corp (Toshiba Corporation)
• Original Assignee: Fujitsu Limited
• Inventors: Katayama, Masaki
• Primary Examiner(s): Klimowicz, William
• Application Number:
  US09/264,360
• Time in Patent Office: 834 Days
• Field of Search: 360/234.7, 360/294.1, 360/294.4, 360/294.3
• US Class Current: 360/234.7
• CPC Class Codes: G11B 5/5552 using fine positioning means for track acquisition separate from the coarse (e.g. track changing) positioning means
• CPC Class Codes: G11B 5/59683 for magnetoresistive heads
• CPC Class Codes: G11B 5/6005 Specially adapted for spacing from a rotating disc using a fluid cushion

Abstract

In a magnetic head slider, in which a slider film is formed on the surface of a substrate or on the surface of a sacrificial layer provided on the substrate so that the substrate or the substrate and the sacrificial layer are separate from the slider film, in an MR head on the inductive layer on the track of a medium, there is provided a rotary mechanism 21 supported by the stationary section 20a of the slider film so that a portion 24 of the slider film can be rotated on a surface substantially parallel to the surface of the recording medium and, in the movable section 24 of the rotating mechanism, there is provided an opposing magnetic pole of the magnetic head element 22 which is opposed to at least the recording medium.

Claims

1. A magnetic head slider adapted to be opposed to a recording medium comprising:

a slider film body provided on a surface of a substrate or on a surface of a sacrificial layer provided on a substrate, the substrate or the sacrificial layer and substrate being separate from the slider film body;

a rotating mechanism supported by a stationary section of the slider body so that a movable section of the rotating mechanism which is a portion of the slider body can be rotated in a plane substantially in parallel to a surface of the recording medium, and at least an opposed magnetic pole of a magnetic head element adapted to be opposed to the recording medium, provided in a movable section of the rotating mechanism;

said rotating mechanism comprising a plurality of support springs arranged along a periphery of said movable section at certain intervals of angles to support said movable section onto the stationary section so that said movable section can be rotated with respect to the stationary section wherein said movable section is coupled to said stationary section by said support springs.

2. A magnetic head slider as set forth in claim 1, wherein the head slider further comprises a drive-force-generating section for driving the movable section with respect to the stationary section against an elastic force of the support spring, by an electrostatic attraction force acting between the opposed surfaces of the movable and the stationary sections when a voltage is applied between opposed surfaces.

3. A magnetic head slider as set forth in claim 2, wherein the drive-force-generating section comprises a stationary section having a plurality of teeth parallel to each other, a movable section having a plurality of teeth parallel to the teeth of the stationary section, said support spring for supporting the movable section so that the movable section can be moved with respect to the stationary section in a tooth width direction, and said drive-force generating section for moving the movable section to a position at which an electrostatic attraction force in the tooth width direction, generated when a voltage is applied between the teeth of the stationary section and those of the movable section, is balanced by said elastic force of the support spring.

4. A magnetic head slider as set forth in claim 1, wherein a drive mechanism for driving the movable section with respect to the stationary section is composed of a piezoelectric element.

5. A magnetic head slider as set forth in claim 1, wherein the movable section is driven with respect to the stationary section so that an orientation of the magnetic head element and a direction of a track of the recording medium agree.

6. A magnetic head slider as set forth in claim 1, wherein the movable section is driven with respect to the stationary section so that an orientation of the magnetic head element follows a direction of a track of the recording medium agree.