JP2000076632A - Magnetic disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove dirt stuck to a head when unloaded and to reduce a data read/write impediment by providing a cleaning mechanism removing the dirt stuck to a head slider when unloaded. SOLUTION: A guide 3 is set on a position avoiding the head slider and the position being in contact with a head actuator so as not to be damaged due to friction at the time when the head slider is moved. Rise and fall are provided on the guide 3 so that the head is stopped on the fixed position when unloaded, and the head actuator is stopped on the lowered position. A mechanism 4 for removing the dirt is provided, and the mechanism 4 is provided with a rugged processing surface preventing the head actuator from becoming immovable due to adhesion among a lubricant adopted to a disk surface of a magnetic disk device adopting a CSS system, a head slider surface and the mechanism 4 surface. The rugged processing surface is arranged on the position that the head slider is stopped when unloaded so as to be in contact with the head slider lower surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention is applied to a magnetic disk drive having a dynamic load / unload function.

[0002]

2. Description of the Related Art In a conventional magnetic disk drive, when the disk motor is stopped, the head is in contact with the disk surface, and when the disk rotates, the CSS (contact start / start) is lifted from that position.
Stop) method and dynamic load / unload method in which the head is moved to a place other than the disk surface when the disk motor is stopped.

[0003]

In a magnetic disk drive, during operation, the head flies over the disk surface with a very small flying height. During this operation, if lubricant or other fine dust on the disk surface adheres to the head (head slider), the flying height and flying attitude of the head are adversely affected, and data cannot be read or written normally. there is a possibility. The dirt adhering to this head is CS
S can be dropped by performing
In the magnetic disk device using the method, the occurrence of the problem can be avoided by performing the CSS.

On the other hand, in a magnetic disk drive using the dynamic load / unload method, since it is not necessary to perform CSS, the lubricant for the disk does not need to have a good lubricity required in the CSS method. Also, even when the magnetic disk drive is in operation, when it is not necessary to perform reading or writing, it can be evacuated from the disk surface to another place, so the potential of dirt on the head during operation is low, but dirt is There is no effective remedy in case of adhesion.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic disk drive having a mechanism for removing dirt attached to a head (head slider) at a position where the head is unloaded in order to solve the above-mentioned problems. Is to do.

[0006]

FIG. 1 shows an overall view of the present invention.
In FIG. 1, 1 indicates a magnetic disk, 2 (A) indicates a time when a head actuator and a head slider are positioned on the disk surface, and FIG. 2 (B) indicates a position when the head actuator and the head slider are unloaded. Represents. Three
Is a guide for loading and unloading the head. When the head is off the disk surface, the head actuator moves along the guide and stops at the unload position. At this time, the guide is installed at a position avoiding the head slider and in contact with the head actuator so that the head slider is not damaged by friction during movement.

[0007] Further, the head actuator stops at a position where the height is lowered so that the stop position of the head at the time of unloading is constant. Reference numeral 4 denotes a mechanism for removing dirt from the head, and the head actuator cannot be moved due to the adhesion between the lubricant used in the disk of the magnetic disk device employing the CSS system and the surface of the head slider and the surface of the head. It is a flat plate-like plate having a processed surface with irregularities, and is arranged to be in contact with the lower surface of the head slider at the position where the head slider stops at the time of unloading. With this, CSS is performed between the head slider and 4 at the time of load / unload,
Dirt attached to the head can be removed.

[0008]

According to the present invention, TA (thermal asperity) generated due to head contamination due to removal of contamination adhered to the head (head slider) at the time of unloading.
And other data read / write failures can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a magnetic disk drive according to an embodiment of the present invention.

[Explanation of symbols]

1 ... magnetic disk, 2 (a): position of head actuator and head slider on disk surface, 2 (b): position with head actuator and head slider loaded, 3 ... guide , 4… A mechanism to remove head dirt.

Claims (1)

[Claims] 1. A magnetic disk drive for dynamically loading and unloading a head actuator, comprising a cleaning mechanism for removing dirt attached to a head slider at the time of unloading.