JPH02232876A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent attraction between a magnetic disk and a magnetic head slider when the magnetic disk is stopped by providing a fringe on the magnetic disk and providing a projecting part to be abutted to the fringe on the magnetic head slider. CONSTITUTION:While a magnetic disk 1 is rotated, there is the void of sub micron between the facing surfaces of a magnetic head slider 3 and the magnetic disk 1. In this state, a projection 6 of a suspension 4 is controlled not to be in contact with a fringe 2 in the outer circumferential part of a CSS zone in the disk. When the magnetic disk 1 is stopped, there is the magnetic head in the CSS zone near the fringe 2. However, before attraction is generated, the projecting part, namely, the projection 6 of the suspension 4 is moved to a position to be abutted to the fringe and the slider is separated from the surface of the magnetic disk 1.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic disk device K. % relates to a mechanism that prevents the magnetic disk from sticking to the magnetic head slider when the magnetic disk is stopped. [Prior art] Figure 4 shows. For example, Japanese Patent Application Laid-Open No. 62-20124 K
FIG. 4 is a partial sectional view showing the main parts of the conventional magnetic disk drive shown in FIG.
Figure 4 (bl shows the state when the magnetic disk is rotating. In the figure, <<1>> is the a-type disk, (31 is the floating magnetic head slider, (41 is the magnetic head slider +
Suspension that supports 31. (51 is an arm that moves the magnetic head slider (31).The K operation will be explained next.In recent magnetic disk drives. !》 at high speed (for example, 31i00
rpm). The air flow generated by this rotation causes the & air head slider《31 to operate on the principle of an air bearing. ffl Air disk <<1>> Floats while maintaining a submicron gap from the surface. In other words, as shown in Figure 4 (bl K), the pressing force of the suspension <<41> and the upward force of the air flow are balanced,
The a-head slider (3) floats stably. 10,000, When the a-disk device is not used, the rotation of the magnetic disk (1) is stopped and the rotation of the magnetic disk (1) is stopped, and the rotation of the magnetic disk (1) is stopped and the
,ia head slider (31 is suspension《4》
It is pressed by and comes into contact with the magnetic disk <11.

[The problem that the invention aims to solve]

Now, in recent years, as the demand for higher density magnetic disk devices has increased, the flying clearance of the magnetic head slider (3) has been miniaturized. Improvements have been made in the surface accuracy of head sligs (3). %, the surface roughness of the magnetic disk (1) has significantly improved, compared to the conventional roughness Rrr1ax200.
0X is now approaching Rmax100'A. However, with the improvement of surface precision, new problems have arisen. When the magnetic disk drive is stopped, the magnetic head slider (3) and magnetic disk (1)
It is a problem that people are concerned about. When suction occurs, even if the air disk 11) begins to rotate, the air outlet head slider <<31>
could not float, and the a-head slider (3) was damaged. a
There was a problem in that the surface of the air disk (1) was scratched.

This invention was made to solve the above-mentioned problems. The purpose is to pray for a magnetic disk device that can prevent this. [Means for Solving the Problems] A magnetic disk device according to the present invention includes a magnetic disk that is an information recording medium, and a magnetic disk that records and stores information on the magnetic disk.
In a magnetic disk device K equipped with a magnetic head slider for reproduction, a fixed fringe is provided on a magnetic disk and protrudes beyond the information recording portion of the magnetic disk. and is provided on the magnetic head slider to prevent fringe K when the magnetic disk stops.
It is equipped with a protrusion that can be touched. [Function] In the magnetic head device of the present invention, when the magnetic disk is stopped, the fringe is provided on the magnetic head slider and comes into contact with the nine protrusions, thereby separating the magnetic head slider from the surface of the magnetic disk. This prevents the magnetic head slider from sticking to the magnetic disk surface when the disk is stopped. [Example] An example of the present invention will be explained below with reference to the drawings. 1al and 1al (bl) are a top view and a sectional view showing a changing disk according to an embodiment K of the present invention, and FIG.
t and (b) are top and side views showing a magnetic head slider support device according to this embodiment, and FIG. 3 is a partial cross-sectional view showing essential parts of the magnetic disk device according to this embodiment. (a) shows the state when the magnetic disk is stopped, (b)
is state 1 when the magnetic disk is rotating! ll't-show. Next, we will explain the operation. While the disk (1) is rotating, there is a submicron gap between the opposing surfaces of the magnetic head slider (31) and the magnetic disk (41). In this state, the protrusion 61 of the suspension 41 is controlled so as not to contact the fringe 21 on the outer periphery of the disk CSS zone. In case the magnetic disk +11 stops, use the fringe
2) There is a magnetic head in the nearby CSS zone, but before the attraction action occurs, move it to a position where it contacts the protrusion 1611k fringe of the suspension [4]. As shown in Figure 3(a), remove the slider from the surface of the magnetic disk (1). In the above embodiment, the fringe (21) is provided at the outermost circumference of the magnetic disk, but it goes without saying that in the case of a 1-arm, 4-head slider, the fringe (21) is provided at the center of the magnetic disk. However, it may be provided in one part if the magnetic disk stop position is controlled.
When a full-circumference K fringe (21) is provided, a series of operations may be performed while the a-air disk is rotating. [Effects of the Invention] As described above, according to this invention, the magnetic A magnetic disk device Vci is equipped with a disk and a magnetic head slider for recording and reproducing information on the magnetic disk. By providing a protrusion that can come into contact with the fringe when the magnetic disk is stopped, the protruding part of the fringe K can be lifted up.It is possible to easily prevent adhesion when the magnetic disk is stopped.It is inexpensive. This has the effect of making it possible to create a highly reliable magnetic disk device.

[Brief explanation of the drawing]

Figure 1 (al, bl is a top view and sectional view showing a base air disk according to an embodiment of the present invention, Figure 2 (al,
(b) is a top view and side view showing the magnetic head support device used in this embodiment, FIG. 3 is a sectional view showing the main parts of the magnetic disk device according to the embodiment, and FIG. 4 is a conventional magnetic disk device. This is a partial cross-sectional view showing the main parts of. In the figure, 《l》 is a magnetic disk. (21 is a fringe, (3) C magnetic head thruster {/, (41 is a suspension, +51 q arm, <<6I is a protrusion. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In a magnetic disk device comprising a magnetic disk as an information recording medium and a magnetic head slider for recording and reproducing information on the magnetic disk, a fringe provided on the magnetic disk and protruding from an information recording section of the magnetic disk; A magnetic disk drive characterized by comprising a protrusion that is provided on a magnetic head slider and that can come into contact with the fringe when the magnetic disk is stopped.