JPS62248192A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To reduce the occurrences of read errors and damages on information by fixing fine substances by means of an adhesive applied to the inner surface of a case and thereby cleaning the air closed up tightly or halfclosed in the case. CONSTITUTION:When a magnetic disk 2 fixed on a rotary spindle 5 rotates at high speed, an air current 7 is generated in the closed case 1 due to the centrifugal force. The fine substances inside the case are moved by the air current 7, however, when the air passes through an air filter 3 provided in the case 1, these substances are eliminated. Such fine substances which can not be eliminated even with the filter 3 are fixed by the adhesive 4 applied on the surface. As a result, the air inside the case can be cleaned, and accordingly the destruction that may occur to the information due to read errors or head crushes are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a 9-air cleaning mechanism in a sealed or semi-closed case that houses a magnetic disk and a magnetic head in a magnetic disk device.

[Conventional technology]

In conventional magnetic disk drives, the recording medium fixed to the same rotating shaft and the magnetic disk used to read the written information are housed in a sealed or semi-sealed case, and the rotating shaft rotates at high speed. This magnetic disk device uses a method in which all the generated airflow is filtered by an air filter provided inside the case.

[Problem that the invention seeks to solve]

In the above-mentioned conventional magnetic disk device, there are minute particles that cannot be filtered out by the air filter provided in the sealed or semi-sealed case, and it is difficult to read information from the plurality of recording media of the magnetic disk device. It has the disadvantage of causing defects or bed crashes.

[Means for solving problems]

According to the present invention, a magnetic disk is characterized in that it houses a plurality of recording media fixed to the same rotating shaft and a magnetic head for recording and reproducing, and is characterized in that the inner surface of a sealed or semi-sealed case is coated with an adhesive. A device is obtained.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of the present invention.

This embodiment consists of a magnetic disk 2, a rotating shaft 5 for fixing the magnetic disk 2, a sealed case 1, an air filter 3 for purifying the air inside the case, and a coating applied to the inner surface of the case 1. It has an adhesive 4 and an actuator 6 for moving the magnetic head.

When the magnetic disk 2 fixed to the rotating shaft 5 rotates at high speed, an air flow 7 is generated within the sealed case due to centrifugal force. Due to this airflow 7, minute particles floating inside the case are moved, but the air filter 3 installed inside
By passing through the air, fine particles contained in the air are filtered out. However, minute objects that cannot be filtered by the air filter 3 are fixed by the applied adhesive 4, and the air inside the case can be thoroughly purified.

The location where the adhesive 4 is applied on the inner surface of the case 1 and the viscosity of the adhesive 4 are determined by the structure of the magnetic disk device, the gust flow rate, and the flow velocity, and must be set to optimal conditions.

〔Effect of the invention〕

As explained above, the present invention purifies the air inside a sealed or semi-sealed case by fixing minute objects with an adhesive applied to the inner surface of the case of a magnetic disk drive. Failure to read information written on multiple distribution media.

This has the effect of reducing damage to magnetic disks and magnetism caused by head crashes.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

Claims (1)

[Claims] In a magnetic disk drive that houses a plurality of recording media fixed to the same rotating shaft and a magnetic head for recording and reproducing and has a sealed or semi-sealed case, the inner surface of the case is coated with an adhesive. Features of magnetic disk device.