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Head, head suspension assembly, and disk device provided with the same

a technology of suspension assembly and disk device, which is applied in the direction of maintaining head carrier alignment, recording information storage, instruments, etc., can solve the problems of difficult suppression of the adhesion of lubricant caused by backflow, and the failure of the magnetic head to accurately write and read information to and from the disk surfa

Inactive Publication Date: 2009-06-04
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, therefore, the magnetic head may fail to accurately write and read information to and from the disk surface.
Although the adhesion of the lubricant that is attributable to the surface tension can be reduced in the conventional magnetic disk device described above, it is difficult to suppress the adhesion of the lubricant that is caused by the backflows.

Method used

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  • Head, head suspension assembly, and disk device provided with the same
  • Head, head suspension assembly, and disk device provided with the same
  • Head, head suspension assembly, and disk device provided with the same

Examples

Experimental program
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Effect test

first embodiment

[0027]A first embodiment in which a disk device according to this invention is applied to a hard disk drive (HDD) will now be described in detail with reference to the accompanying drawings.

[0028]As shown in FIG. 1, the HDD includes a case 12 in the form of an open-topped rectangular box and a top cover (not shown). The top cover is fastened to the case by screws so as to close the top opening of the case.

[0029]The case 12 contains a magnetic disk 16, spindle motor 18, magnetic heads 40, carriage assembly 22, voice coil motor (VCM) 24, ramp load mechanism 25, board unit 21, etc. The magnetic disk 16 serves as a recording medium. The spindle motor 18 serves as a drive section that supports and rotates the disk. The magnetic heads write and read information to and from the disk. The carriage assembly 22 supports the heads for movement with respect to the disk 16. The VCM 24 rotates and positions the carriage assembly. The ramp load mechanism 25 holds the magnetic heads in a retracted ...

second embodiment

[0069]FIG. 12 shows a magnetic head 40 of a disk device according to this invention. According to the present embodiment, each of embossed portions 70 formed in a slider 42 has a large width along the first direction X and extends from an outlet-side end surface 44b of the slider 42 to the vicinity of each corresponding side pad 48.

third embodiment

[0070]In a magnetic head 40 of a disk device according to this invention, as shown in FIG. 13, moreover, a pair of embossed portions 70 formed on a slider 42 are connected to each other in the position of a trailing step portion 58 and continuously extend along the second direction Y of the slider These embossed portions 70 are formed flush with an outlet-side end surface 44b of the slider.

[0071]In the second and third embodiments, the depth of the embossed portions 70 above the disk-facing surface 43 is larger than that of the trailing step portion 58. In these embodiments, moreover, other configurations of the magnetic disk device including the magnetic heads are the same as those of the foregoing first embodiment, so that like reference numbers are used to designate like portions, and a detailed description thereof is omitted. Further, the same functions and effects of the first embodiment can also be obtained with the second and third embodiments.

[0072]While certain embodiments ...

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Abstract

According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2007-311344, filed Nov. 30, 2007, the entire contents of which are incorporated herein by reference.BACKGROUND[0002]1. Field[0003]One embodiment of the invention relates to a head used in a disk device such as a magnetic disk device, a head suspension assembly provided with the head, and a disk device provided with the head suspension assembly.[0004]2. Description of the Related Art[0005]A disk device, e.g., a magnetic disk device, includes a magnetic disk, spindle motor, magnetic head, and carriage assembly. The magnetic disk is arranged in a case. The spindle motor supports and rotates the disk. The magnetic head writes and reads information to and from the disk. The carriage assembly supports the magnetic head for movement with respect to the magnetic disk. The carriage assembly includes a rotatably supported arm and a suspension exte...

Claims

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Application Information

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IPC IPC(8): G11B5/60
CPCG11B5/6005G11B5/6082
Inventor HANYU, MITSUNOBU
Owner KK TOSHIBA