JPH03130976A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent a head crush due to abraded powder by providing sticky layer for sticking dust in one part of a magnetic head or in the vicinity of the magnetic head. CONSTITUTION:The sticky layer 5 is provided on an airflow inlet end surface 4 of the magnetic head 2. The sticky layer 5 is formed by applying a tacky adhesive material approximately over the whole surface of the airflow inlet end surface 4. The abraded powder 6 generated by contacting the magnetic head 2 with a magnetic recording medium 1 is brought to the tip of the magnetic head again by rotating the magnetic recording medium 1 and stuck to the sticky layer 5. The sticky layer 5 consists of a high tacky adhesive material, and the abraded powder 6 once stuck to this can hardly be removed. Consequently, the abraded powder will never enter between the magnetic head 2 and the magnetic recording medium 1, thus preventing the head crush due to the abraded powder.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic disk device, and particularly relates to a magnetic disk device in which abrasion powder generated by contact between a magnetic recording medium and a magnetic head causes a head crash. be.

[Prior Art] FIG. 4 is a simplified diagram showing a medium and a head of a conventional magnetic disk device using, for example, a floating magnetic head. In the figure, 1 is a disk-shaped magnetic recording medium that is rotationally driven;
Reference numeral 2 denotes a floating magnetic head that performs recording and reproduction on and from the medium 1, and the magnetic head 2 is slightly lifted from the surface of the magnetic recording medium 1 by an air flow 3 caused by relative movement between the magnetic recording medium 1 and the magnetic head 2. It is driven to levitate.

[Problems to be Solved by the Invention] However, in this type of magnetic disk device, abrasion powder is generated due to contact between the medium and the head during contact start/stop, etc., and adheres to the air flow inlet end surface of the head. Since this adhesion force is weak, once the amount of adhesion reaches a certain level, it falls off all at once and gets between the medium and the head, which is a major cause of head crashes.

This invention was made in order to solve the above-mentioned problems, and it is possible to obtain a magnetic disk device in which head crashes are less likely to occur by preventing abrasion particles attached to the head from entering between the medium and the head. purpose.

[Means for Solving the Problems] A magnetic disk device according to the present invention is provided with an adhesive layer for adhering dust to a part of the magnetic head or in the vicinity of the magnetic head.

[Function] In the present invention, the abrasion powder generated by contact between the magnetic head and the medium and attached to the magnetic head is made to adhere to the adhesive layer and prevented from coming off. This makes it possible to effectively prevent the abrasion particles that adhere to and accumulate on the magnetic head from coming off all at once and entering between the medium and the head, causing a head crash, as in the conventional case.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the main structure of the embodiment. In this embodiment, an adhesive layer 5 is provided on the airflow inlet end surface 4 of the magnetic head 2. FIG. This adhesive layer 5 is formed by applying an adhesive over almost the entire surface of the air flow inflow end face 4.

Next, the operation will be explained with reference to FIG.

FIG. 2 is a diagram showing how abrasion powder adheres to the adhesive layer 5. Abrasion particles 6 generated by the contact between the magnetic head 2 and the magnetic recording medium 1 come to the tip of the magnetic head again due to the rotation of the magnetic recording medium 1 and adhere to the adhesive layer 5. Since this adhesive layer 5 is made of a highly adhesive substance, the attached abrasion powder 6 does not easily come off. Therefore, the abrasion powder that has accumulated on the magnetic head 2 does not come off all at once and enter between the magnetic head 2 and the magnetic recording medium 1, unlike in the conventional case, and head crashes due to the abrasion powder do not occur.

In the above embodiment, the adhesive layer 5 is provided on the airflow inflow end surface 4 of the magnetic head 2, but the adhesive layer 5 is provided on the side surface of the magnetic head or on the ventral surface between both air bearing surfaces 6a and 6b on the lower surface of the magnetic head as shown in FIG. Even if the adhesive layer 5 is provided on the tire 7, the generated abrasion powder can be kept adhesive.

Further, in the above embodiment, the adhesive layer is provided on the magnetic head itself, but the same effect can be obtained even if the adhesive layer is provided on a part of the suspension that holds the magnetic head.

In addition, in the above embodiment, adhesive was applied, but
Adhesive tape or the like may be attached.

[Effects of the Invention] As described above, according to the present invention, an adhesive layer for adhering dust to a part of the magnetic head or the vicinity of the magnetic head is provided. This makes it possible to prevent the abrasive powder from entering between the head and the medium, thereby eliminating head crashes caused by the abrasive powder.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main structure of an embodiment of the present invention;
FIG. 2 is a simplified diagram showing the abrasion powder adhesion situation in the above embodiment, FIG. 3 is a perspective view showing another embodiment of the present invention, and FIG.
The figure is a simplified diagram showing the main structure of a conventional magnetic head device. 1 is a magnetic recording medium, 2 is a magnetic head, 3 is an air flow, 4 is an air flow inflow end face, 5 is an adhesive layer, and 6 is abrasion powder. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] A magnetic disk device comprising a magnetic recording medium and a magnetic head facing the magnetic recording medium, characterized in that an adhesive layer for adhering dust is provided on a part of the magnetic head or in the vicinity of the magnetic head. magnetic disk device.