JPH03230379A - Slider for thin film magnetic head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a slider for a thin-film magnetic head used in a magnetic disk device, etc., and relates to a slider structure that is particularly lightweight and has good flying stability when the magnetic disk is flying low. The purpose of this project is to reduce the weight of the head element installation area on the levitation force generating surface and airflow outflow end surface of the ,-ru without reducing the size, and to stabilize the low levitation relative to the magnetic disk. Consisting of a pair of parallel floating rails having a force generating surface and a region in which a thin film magnetic head element is attached to the airflow outflow end surface, and a supporting member connecting these floating rails, the supporting member is opposite to the surface facing the recording medium. The back surface of the side is formed into a tapered shape that is inclined in the airflow inflow direction.

(Industrial Field of Application) The present invention relates to a slider for a thin film magnetic head used in a magnetic disk device and the like, and particularly to a slider structure that is lightweight and has good flying stability when the magnetic disk is flying low.

In recent years, with the increase in capacity and high-density recording in magnetic disk drives, it has become important to increase the track density and linear recording density of the magnetic disk, as well as to reduce the flying gap of the magnetic herad slider to the magnetic disk. ing. Furthermore, as the flying height becomes lower, the magnetic slider is more likely to come into contact with or collide with the disk surface, which tends to increase the probability of damaging the magnetic disk surface and the magnetic head.

Therefore, there is a need for a small, lightweight, and highly reliable magnetic head slider that reduces the impact when it comes into contact with the magnetic disk surface at low flying height.

[Conventional technology]

A conventional slider for a thin film magnetic head is made of, for example, Al2O3.T, as shown in FIG.
By grinding a slider substrate made of iC or ceramics, an inclined surface 3 and a levitation force generating surface 4 are formed on both sides of the airflow inflow end from the airflow inflow end on the medium facing surface side toward the outflow end. A pair of floating rails 1 and 2 are formed in parallel, and a recording/reproducing thin film magnetic head element (not shown) is attached to the airflow outflow end surface 5 of each floating rail 1.2 in this slider. The magnetic head slider is supported by an access arm via a spring arm (not shown) and applies a pressing load (
Low levitation is achieved by the balance between the spring pressure) and the levitation blades generated on each levitation force generating surface 4 of the pair of levitation rails 1.2.

[Problem to be solved by the invention]

By the way, in the structure of such a conventional thin-film magnetic head slider, as the flying height of the magnetic disk becomes lower, the probability of contact or collision with the disk surface increases. In order to improve flying stability by minimizing the impact of Efforts have been made to make the slider itself smaller and lighter to the extent possible, but there is a problem in that there are limits to such reduction in size and weight.

In addition, the pressure load applied by the spring arm to the magnetic head slider, which flies low above the rotating magnetic disk, can be reduced to reduce the impact when it comes into contact with the magnetic disk, and when the magnetic disk starts or stops rotating. If head adsorption is prevented, the flying stability of the slider will deteriorate,
There was a contradictory problem in that head crashes were more likely to occur.

In view of the above-mentioned conventional problems, the present invention has been developed by reducing the size of the henode element arrangement area on the levitation force generation surface and airflow outflow end surface of a pair of levitation rails (reducing weight and stabilizing low levitation relative to the magnetic disk). The object of the present invention is to provide a novel thin-film magnetic gutter slider that is designed to achieve improved performance.

Means for Solving 3 Problems] In order to achieve the above-mentioned object, the present invention provides a pair of magnetic head elements having a levitation force generating surface facing the magnetic recording medium and a region in which a one-film magnetic head element is attached to the airflow outflow end surface. The recording medium is composed of parallel floating rails and a supporting member that connects these floating rails, and the back surface of the supporting member opposite to the surface facing the recording medium is formed into a tapered shape that is inclined in the airflow inflow direction.

[For production]

In the slider of the present invention, the head structure is such that the airflow outflow ends of the pair of floating rails are connected by a support member having a tapered back surface in the airflow inflow direction, so that the support member between the pair of floating rails is large. Because it is reduced,
It is significantly lighter than conventional sliders, reducing the impact when it comes into contact with the magnetic disk, without reducing the area where the heave and gutter elements are placed on the levitation force generation surface and airflow outflow end surface of the pair of levitation rails. can do.

Furthermore, when the slider floats low above the disk, the airflow from the airflow inflow end is introduced onto the tapered back surface of the support member, and a pressing force is generated in the direction of pressing the slider against the disk surface. Due to the balance with the levitation blades generated on each levitation force generating surface of the levitation rail, it is possible to improve the stability of low levitation even if the load (spring pressure) from the spring arm that originally presses the slider against the disk surface is reduced. , furthermore, CSS (Co
ntactStart 5top) Reliability is improved, such as by being able to prevent the slider from sticking during operation.

;Example] Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of a slider for a thin film magnetic head according to the present invention, with its medium facing surface facing upward.

In the figure, 11.12 indicates an inclined surface 13 on the airflow inflow end side.
A pair of levitation rails are arranged in parallel and have a levitation force generating surface 14 provided with a levitation force generating surface 14. Reference numeral 15 denotes an airflow outflow end surface 16 on which a thin film magnetic head element for recording and reproduction (not shown) is attached.
An airflow outflow end having a

The pair of floating rails 11 and 12 are connected together by a supporting member 17 having a tapered back surface (surface opposite to the medium facing surface) 18 in the airflow inflow direction. Connected A 1 z(h・TiC
1 or a slider structure made of ceramic or the like.

Therefore, in the thin film magnetic head slider having such a structure, most of the supporting members between the pair of floating rails 11 and 12 are removed, so that the pair of floating rails 11 and 12 are removed.
．． The weight of the slider has been reduced by about 5% compared to a conventional slider without reducing the attachment area of the thin film magnetic head on the levitation force generating surface 14 and the airflow outflow end surface 16 of 12.
Since it is possible to reduce the weight by about 0%, the impact upon contact with the disk surface is also reduced, and the occurrence of head crashes can be significantly reduced.

Furthermore, when the slider is levitated above the rotating magnetic disk 21 as shown in FIG. A so-called pressing force Ga is generated on the shaped rear surface 18 in the direction of the disk surface, and this pressing force Ga and the levitation blades generated on each levitation force generating surface 14 of the levitation rails 11 and 12 are generated. Due to the balance with Gb, it is possible to improve the stability of low levitation even if the spring pressure (load) applied to the slider by the spring arm is reduced, and since the spring pressure can be reduced, the magnetic It is also possible to prevent the slider from sticking to the disk during the C3S operation.

〔Effect of the invention〕

As is clear from the above description, according to the slider for a thin film magnetic head according to the present invention, the weight can be reduced to about 50% compared to the conventional type of slider for a thin film magnetic head. The impact upon contact with the head is alleviated, the occurrence of head crashes is significantly reduced, the stability of low flying height is improved, and head adsorption is prevented, which significantly improves reliability. It produces valuable effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of a slider for a thin film magnetic head according to the present invention, FIG. 2 is a diagram for explaining the function and effect of the slider for a thin film magnetic head according to the present invention, and FIG. 3 is a conventional diagram. FIG. 2 is a perspective view for explaining a slider for a thin film magnetic head of FIG. 1 and 2, 11 and 12 are floating rails, 13 is an inclined surface, 14 is a levitation force generating surface, 15 is an airflow outflow end, 16 is an airflow outflow end surface, 1
7 is a support member, 18 is a tapered back surface, and 21 is a magnetic disk. Figure 3: 13f4 (1 leg) 1 parent '7h out slide εμ 1 piece of ground

Claims (1)

[Claims] a pair of parallel levitation rails (11, 12) having a levitation force generating surface (14) facing the magnetic recording medium and a region where a thin film magnetic head element is attached to an airflow outflow end surface (16);
A support member (
17), wherein a back surface (18) of the support member (17) opposite to the surface facing the recording medium is formed in a tapered shape inclined in the direction of airflow inflow.