JPH03150783A - Magneto-optical disk device - Google Patents

Abstract

PURPOSE:To prevent the entered dust from affecting a floating type magnetic head by providing a dust eliminating member and bending the tip of this member to the upper part to secure a contact with the upper surface of a magneto- optical disk. CONSTITUTION:A sleigh-shaped dust eliminating member 20 is adhered to a pressurizing member 21 and has its tip bent upward. Then the member 20 attracts and eliminates the dust attached to the surface of a magneto-optical disk 1. The member 20 is attached to the arms 14 and 14a which support a floating type magnetic head 10 and provided at an advanced position against the head 10 and in the revolving direction A of the disk 1. When the disk 1 is revolved toward an arrow A, the head 10 floats slightly by the function of an air current 15 together with the member 20 touching the upper surface of the disk 1. Thus the member 20 can attract and eliminate the dust entered into a cartridge and attached to the surface of the disk 1. As a result, the dust never reaches the head 10.

Description

[Detailed Description of the Invention] [General a] Regarding a magneto-optical disk device that performs override using a magnetic field modulation method, to provide an angle surface that prevents the influence of VP dust that has entered, such as a head crash, from affecting a floating magnetic head. The purpose of this system is to use an optical head that irradiates a magneto-optical disk with a laser beam, and a floating IS that levitates due to the air flow generated by the rotation of the magneto-optical disk and applies a magnetic field to the magneto-optical disk! In the magneto-optical disk device that connects the magnetic head, a removal member that adsorbs and removes dust attached to the surface of the magneto-optical disk is mounted on the floating '! A part that is attached to an arm that supports the magnetic head and that precedes the floating magnetic head in the rotational direction of the magneto-optical disk (
It is configured by providing it in Q.

[Industrial application field]

The present invention relates to a magneto-optical disk device that performs override using a magnetic field modulation method.

[Conventional technology]

FIG. 3 shows a schematic configuration of the main parts of a conventional magneto-optical disk device.

Reference numeral 1 denotes a magneto-optical disk with a magneto-optical recording film 3 and a protective film 4 formed on the upper surface (the surface) of a transparent substrate 2.

Reference numeral 5 denotes an optical head, which consists of a half-body V6, an objective lens 7, and the like. The optical head 5 is located below the magneto-optical disk 1, and the laser beam 8 is focused on the recording film 3.

Reference numeral 10 denotes a floating magnetic head, which has a structure consisting of a floating slider 11 and a magnetic head section 12 at the rear end of the floating slider 11, and is supported via a rod arm 13 on the tip side of a support 7-m 14, and is a floating type magnetic head. It is arranged on the upper side of the magneto-optical disk 1, facing the magneto-optical disk 5.

The magneto-optical disk 1 rotates at high speed in the direction of the arrow Ah, and the airflow 15 generated on its surface at this time causes the magnetic head 10 to rotate.
(slightly) rises as shown in Figure 3. .

In order to continue recording and reproducing normally, it is necessary for the magnetic head 10 to stably maintain the above-mentioned floating state.

[Problem to be solved by the invention] In a general magneto-optical disk drive δ, the magneto-optical disk is fixed to a motor spindle and has a sealed structure, so the inside is shielded from dust in the outside air and the magnetic head 10
The masonry was constructed in a stable float state for the first time, and there were no particular problems.

In recent years, there has been a movement toward cartridges for 3-inch or 5-inch magneto-optical disks. In this case, the magneto-optical disk cannot have a sealed structure in order to enable the loading and unloading of the cartridge.

For this reason, there is little chance of dust entering the interior, and in some cases, ignoring the risk of causing a head crash due to the influence of dust. ? do not have.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magneto-optical disk IC neck that can prevent the influence of invading dust from reaching a floating magnetic disk.

[Means to solve the problem]

The present invention relates to an optical head that irradiates a magneto-optical disk with a laser beam, and a floating magneto-optical head that floats due to an air flow generated by the rotation of the magneto-optical disk and applies a magnetic field to the magneto-optical disk. In the magneto-optical disk device, a dust removal member that adsorbs and removes dust adhering to the surface of the magneto-optical disk is attached to an arm supporting the floating magnetic head, and The above-mentioned floating magnetic head is provided at a position preceding the floating magnetic head.

(Function) The dust removal member attracts and removes dust that adheres to the top surface of the magneto-optical disk and tries to reach the magnetic head, and
! ! To prevent harmful effects of dust on a magnetic head.

Since the dust removal member is attached to the arm that supports the magnetic head, the dust removal member functions normally with respect to the magnetic head no matter where the magnetic head is accessed.

Since the dust removal member is located at a position preceding the magnetic head in the rotational direction of the magneto-optical disk, 04J/A is the magnetic head before the first rotation of the magneto-optical disk is completed, that is, immediately after the rotation. Prevent this from happening.

〔Example〕

FIGS. 1 and 2 show the main parts of a magneto-optical disk device d which is an embodiment of the present invention. In each figure, parts that substantially correspond to those shown in FIG. 3 are given the same reference numerals.

20 is a dust removal member, for example, linen paper or Miracrayon (trade name of Toshi), which absorbs dust 1
6 Right function.

This D dust removing member 20 is bonded to a pressurizing member 21 such as rubber or sponge, and has a warped shape, and the tip thereof is curved upward.

The pressurizing member 21G is bonded to the tip of the extending arm portion 14a formed by extending a part of the support arm 14.

Further, the hard dust removing member 20 is located at a position 1 degree ahead of the magnetic head 10 in the direction of rotation of the magneto-optical disk 1 (in the direction of arrow A7'J). In FIG.
and the optical head 5 are moved in the direction of arrow B within one body.

The cartridge 30 containing the magneto-optical disk 1 is
As shown in the figure, the disc is mounted in a magneto-optical disc device with the shutter 31 moved and the window 32 open.

The tip side of the support arm 14 enters into the window 32, and the dust removing member 20 lightly contacts the upper surface of the magneto-optical disk 1 at a portion preceding the magnetic head 10 in the rotational direction of the magneto-optical disk 1.

When the magneto-optical disk 1 rotates at high speed in the direction of the arrow, the first
As shown in the figure, the magnetic head 10 is for n air flow 15 and is very small. 7 up.

The vp dust removal member 20 is kept in contact with the upper surface of the magneto-optical disk 1.

Therefore, even if dust from the outside air enters the device, further into the cartridge 30, and adheres to the top surface of the magneto-optical disk 1, this Vp dust will not reach the magnetic head 10. The dust is attracted by the dust removing member 20 and removed from the upper surface of the magneto-optical disk 1, and there is no i at the magnetic head 100.

This avoids the risk of the magnetic head 10 crashing due to the influence of dust entering from the outside.

That is, when looking at the magnetic head 10, the state of dust is the same as in the case of a sealed structure, and the magnetic head 10 stably maintains a state above the predetermined η.

In addition, the contact pressure of the dust removal section (420) to the magneto-optical disk 1 is very small, and the dust adsorbed by the section 1420 causes scratches that extend beyond the chemical film 4 and reach the magneto-optical recording layer g13. There's nothing wrong with that.

Further, if the dust removing section 4420 itself has a suitable impact, the pressurizing member 21 is not necessary.

Also, gP! Since the dust removing section 4A20 is located at a position preceding the magnetic head 10 in the rotational direction of the magneto-optical disk 1, the member 20 functions from the first rotation and dust is removed from the magnetic head 10 immediately after the rotation. prevent this from happening.

Further, the dust removal member 20 is attached to a part of the support arm 14 (=j), and when accessed, it moves together with the magnetic head 10, and its position relative to the magnetic head 10 does not change. No matter where the head 10 is located, the dust removal member 20 functions to adsorb and remove particulate matter that is about to reach the magnetic head 10 immediately before it.

〔Effect of the invention〕

As explained above, according to the present invention, dust adhering to the surface of the magneto-optical disk can be removed by adsorption whenever the magnetic head is in any position after being accessed, or immediately after the magneto-optical disk rotates. I can do it. This makes it possible to reliably prevent the influence of dust from reaching the magnetic head, which is effective when applied to cartridge loading/unloading where a dense RFFL JM structure cannot be used.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. . In the figure, 1 is a lunar magneto-optical disk, 2 is a transparent substrate, 3 is a magneto-optical recording film, 4 is a protective film, 5 is an optical head, 10 is a floating magnetic head, 11 is a floating slider, and 124 is a magnetic head section. , 13 is a rod arm, 14 is a support arm, 14a is an extended 7-arm portion, and 20 is g! dust removal member; 21 is the 5th part member; 25 is the actuator 1 member; I-evening, 30 is car 1-ridge, 31 (shutter, 32 shows no window).

Claims (1)

[Claims] An optical head (
5) and a floating magnetic head (10) which is levitated by an air flow generated by the rotation of the magneto-optical disk and applies a magnetic field to the magneto-optical disk, wherein the magneto-optical disk (1) A dust removing member (20) that adsorbs and removes dust attached to the surface of the magnetic head is attached to the arm (14, 14a) that supports the floating magnetic head,
A magneto-optical disk device configured to be provided at a position preceding the floating magnetic head (10) in the rotational direction (A) of the magneto-optical disk.