JPH0573852A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To improve the floating stability of a head and the durability of the magnetic head device by periodically removing the dust sticking to the head during the working of the device. CONSTITUTION:A cleaning zone 2 for head cleaning is provided in an area having a medium surface and the head 4 is periodically moved to the cleaning 2 to remove the dust sticking to the head 4 by contact with microprojections 5 provided on the zone 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device.

[0002]

2. Description of the Related Art In a conventional magnetic disk device, a head is in a floating state by a contact start stop system (CSS system) when the device shifts from a stopped state to an operating state. The head is away from the media surface whenever the device is in operation. On the other hand, dust or the like in the apparatus is mainly adhered when the head is in a floating state, and in some cases, an adhering substance that impairs stable head flying may be deposited on the head. The deposited head deposit is accidentally removed by the contact between the head and the medium when the apparatus stops.

[0003]

In the conventional magnetic disk device, the removal of the head deposit is limited to when the device is stopped, is not performed intentionally, and is less frequent. When the amount of deposits deposited on the head increases, the flying of the head becomes unstable, which causes problems such as signal reading and writing and physical damage.

[0004]

A magnetic disk drive according to the present invention comprises an annular cleaning zone centered on the center of the medium surface, said medium surface being provided with fine projections on the entire surface of said cleaning zone. It

Further, the magnetic disk drive of the present invention may be configured to include control means for moving the head to the cleaning zone to reduce the flying height.

[0006]

The present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a medium according to an embodiment of the present invention.

On the recording surface of the medium 1, an annular cleaning zone 2 centered on the center of the medium 1 is provided, and minute projections 5 are provided on the entire surface of the cleaning zone 2.

While the head 4 having the deposit 3 deposited on the cleaning zone 2 provided on the medium 1 moves, the head 4 comes into contact with the protrusion 5 and the deposit is removed.
At this time, the flying height of the head 4 may be reduced.
The movement of the head 4 to the cleaning zone 2 is performed by internal software.

As described above, according to the present invention, since the deposits deposited on the head can be removed by the cleaning zone on the medium surface, the durability and reliability of the medium can be improved, and the flying of the head becomes unstable. This has the effect of preventing defective reading and writing of signals.

[Brief description of drawings]

FIG. 1 is a perspective view of a medium according to an embodiment of the present invention.

[Explanation of symbols]

 1 medium 2 cleaning zone 3 adhering matter 4 head 5 small protrusions

Claims (2)

[Claims] 1. A magnetic disk drive, comprising: an annular cleaning zone centered on the center of a medium surface, provided on the medium surface, and minute projections provided on the entire surface of the cleaning zone. 2. The magnetic disk drive according to claim 1, further comprising control means for moving the head to the cleaning zone to reduce the flying height.