JPH03212879A - Magnetic disk cleaner - Google Patents

Abstract

PURPOSE:To surely eliminate dust biting into the plane of a magnetic disk by stopping the magnetic disk transiently when the collision of a cleaning head with the dust is detected with a sensor unit, and rotating the disk in a backward direction. CONSTITUTION:The magnetic disk 6 is rotated in a forward direction at con stant speed after the cleaning head 1 is loaded on the magnetic disk 6 with an actuator 2, and the cleaning head 1 is floated over at constant floating height. Next, when the collision of the cleaning head 1 with the dust 7 is detected when the cleaning head 1 is sought by stepping to the inner peripheral side of the magnetic head 6, the magnetic disk 6 is stopped transiently, then, reverse rotation is started. After that, the magnetic disk 6 is returned to a forward rotating state, and the cleaning head 1 is sought by stepping to the inner peripheral side of the magnetic disk 6 again with the actuator 2. In such a way, it is possible to easily and surely eliminate the dust biting into the plane of the magnetic disk from the plane of the magnetic disk.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a magnetic disk cleaning device that reliably removes dust on the surface of a magnetic disk for cleaning.

[Prior Art] FIG. 4 is a schematic diagram showing the configuration of a conventional magnetic disk cleaning device. In the figure, l is a cleaning head, 2 is an actuator that holds and seeks the cleaning head 1, 3 is a sensor unit that detects a collision between the cleaning head l and dust (not shown),
6 is a magnetic disk, 4 is a spindle motor to which the 81 disk 6 is attached and rotated, and 5 is a control unit for controlling each of the above members.

FIG. 5 is a flowchart for explaining the operation of the magnetic disk cleaning device of FIG. 4, and FIG. 6 is an explanatory diagram showing a manner in which dust is removed by the magnetic disk cleaning device of FIG. 4. In the figure, 1 is a cleaning head, 6 is a magnetic disk, and 7 is dust.

Next, the operation of the above-described conventional magnetic disk cleaning device will be explained. First, the magnetic disc 6 is attached to the rotating shaft (not shown) of the spindle motor 4. Next, the cleaning rod 1 is loaded onto the magnetic disk 6 by the actuator 2. Thereafter, the magnetic disk 6 is rotated forward in one direction at a constant speed by the spindle motor 4, and at this time, the cleaning head 1 flies to a constant flying height. Next, the actuator 2 step-seeks the cleaning head l toward the inner circumferential side of the magnetic disk 6, and at this time, when the sensor unit 3 detects a collision between the cleaning head 1 and the dust 7, the cleaning head 1 moves for a certain period of time. to float between. By repeatedly colliding the cleaning head l with the dust 7 while the magnetic disk 6 rotates forward in one direction, the dust 7 on the surface of the magnetic disk 60 is removed and the entire surface of the magnetic disk 6 is cleaned. reactor. Once the entire surface of the magnetic disk 6 has been cleaned, the magnetic disk 6 is stopped, the cleaning head 1 is unloaded, and then the magnetic disk 6 is removed from the rotating shaft of the spindle motor 40.

[Problems to be Solved by the Invention] The conventional magnetic disk cleaning device described above is configured as described above, so that the collision between the cleaning head 1 and the dust 7 can be avoided during the forward rotation of the magnetic disk 6 in one direction. By repeating this process, the dust 7 present on the surface of the magnetic disk 6 is removed and the entire surface of the magnetic disk 6 is cleaned, as shown in FIG. 6(a). In this way, the cleaning head l and the dust 7 repeatedly collide in the same direction, and the dust 7 on the surface of the magnetic disk 6 is removed.
As a result, if the dust 7 digs into the surface of the magnetic disk 6 as shown in FIG. 6(h), the dust 7 is present on the surface of the magnetic disk 6. Even though the cleaning head 1 and the dust 7 sometimes no longer collide, it is erroneously determined that the dust has been removed from the surface of the magnetic disk 6. However, due to the vibration of the magnetic disk 6 and the elasticity of the magnetic layer on the magnetic disk 6, the dust 7 is generated again.
There is a problem in that the dust 7 rises above the surface of the magnetic disk 60 and collides with the cleaning spatula I'1.

This invention was made to solve the above-mentioned problems, and even if dust gets stuck on the surface of the magnetic disk, the dust can be reliably removed from the surface of the magnetic disk. The purpose is to obtain a magnetic disk cleaning device.

[Means for Solving the Problems] In the 81 disk cleaning device according to the present invention, in addition to rotating the magnetic disk forward at a constant speed in one direction using a spindle motor, a sensor unit detects a collision between the cleaning head and dust. The device is equipped with a magnetic disk reverse rotation control mechanism that temporarily stops the magnetic disk and reversely rotates it in the other direction.

[Function] The magnetic disk reverse rotation control mechanism provided in the magnetic disk cleaning device of the present invention temporarily stops the magnetic disk when the sensor unit detects a collision between the cleaning head' and dust. Since it is controlled so that it rotates in the opposite direction, even if there is dust that conventionally could not be removed because it had gotten stuck inside the surface of the magnetic disk, the dust can be reliably removed from the surface of the magnetic disk. can be removed.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure is a schematic diagram showing the configuration of an 81-kilometer disk cleaning device which is an embodiment of the present invention.

In the figure, 1 is a cleaning head, 2 is an actuator that holds and seeks the cleaning head 1, 3 is a sensor unit that detects a collision between the cleaning spatula F1 and dust (not shown), 6 is a magnetic disk,
4 is a spindle motor for rotating the magnetic disk 6; 8 is a function for temporarily stopping the spindle motor 4 and rotating the spindle motor 40 in the opposite direction, that is, temporarily stopping the magnetic disk 6; A magnetic disk reverse rotation control mechanism 5a having a function of rotating the magnetic disk 6 in the opposite direction is a control unit that controls each of the above-mentioned members.

FIG. 2 is a flowchart for explaining the operation of the magnetic disk cleaning device of FIG. 1, and FIG. 3 is an explanatory diagram showing a manner in which dust is removed by the magnetic disk cleaning device of FIG. 1. In the figure, l is a cleaning head, 6 is a @air disk, and 7 is dust.

Next, the operation of the magnetic disk cleaning device according to the embodiment of the invention described above will be explained.

First, the magnetic disk 6 is mounted on the rotating shaft (not shown) of the spindle motor 4. Next, it is loaded onto the magnetic disk 6 by the cleaning head 1 or the actuator 2. Thereafter, the magnetic disk 6 is rotated forward in one direction at a constant speed by the spindle motor 4, and at this time, the cleaning head 1 flies to a constant flying height. Next, the actuator 2 stepseeks the cleaning head l toward the inner circumferential side of the magnetic disk 6, and at this time, when the sensor unit 3 detects a collision between the cleaning head 1 and the dust 7, the magnetic disk in the control unit 5a reversely rotates. The control mechanism 8 temporarily stops the forward rotation of the magnetic disk 6 in one direction, and starts the reverse rotation in the other direction. Thereafter, the magnetic disk 6 returns to its original state of forward rotation in one direction, and when the sensor unit 3 confirms that there is no collision between the cleaning head 1 and the dust 7, the actuator 2 again moves the cleaning head l to the magnetic disk. Step seek to the inner circumference side of 6.

Then, when the cleaning head 1 reaches the innermost position of the magnetic disk 6, the series of operations described above ends.

According to the magnetic disk cleaning device according to the present invention, by performing the above-described series of operations, unlike the conventional magnetic disk cleaning device described above, the magnetic disk 6 does not dig into the surface of the magnetic disk 6 and can be sufficiently removed. Even if there is Dust 7 that could not be created, the third
As shown in FIGS. (a) and (b), by temporarily rotating the magnetic disk 6 in a reverse direction, the dust 7 is excavated from within the surface of the magnetic disk 6 by receiving a force in a direction opposite to that of the conventional device. Therefore, the dust 7 can be easily and reliably removed from the surface of the magnetic disk 6.

In the above embodiment, the magnetic disk reverse rotation control mechanism 8 is provided to temporarily rotate the magnetic disk 6 in reverse. However, when the magnetic disk 6 is rotating at a low speed, the cleaning head l is A control mechanism may be provided to perform a one-step seek reciprocating operation in the radial direction of the magnetic disk 6, and the same effect as in the above embodiment can be obtained.

[Effects of the Invention] As described above, according to the magnetic disk cleaning device of the present invention, in addition to rotating the magnetic disk forward at a constant speed in one direction using the spindle motor, it also prevents the sensor unit or the cleaning head from colliding with dust. It is equipped with a magnetic disk reverse rotation control mechanism that temporarily stops the magnetic disk and rotates it in the other direction when it is detected. Highly reliable magnetic disk cleaning that can be easily and reliably removed from the surface of the magnetic disk even if there is dust that has become embedded in the surface of the magnetic disk, and also helps prevent head crashes. The device has excellent effects.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the configuration of a magnetic disk cleaning device according to an embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of the magnetic disk cleaning device shown in FIG. 1, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a schematic diagram showing the configuration of a conventional magnetic disk cleaning device, and FIG. 5 explains the operation of the magnetic disk cleaning device shown in FIG. 4. FIG. 6 is an explanatory diagram showing a manner in which dust is removed by the magnetic disk cleaning device of FIG. 4. In the figure, 1... cleaning head, 2... actuator, 3... sensor unit, 4... spindle motor, 5, 5a... control unit,
6...Magnetic disk, 7...Dust, 8...Magnetic disk reverse rotation control mechanism. In addition, the same symbols in the figures indicate the same or equivalent parts. Agent Masuo Oishi Diagram Cleaning Edge "Ac-5-, L Sensor Unit Spindle Motor Control Unit Private Disk Reverse Rotation Control Inkstone" 1 Diagram Diagram (G) 6 1゜Cleaning Head , Izuku 7: Dust diagram (b)

Claims (1)

[Claims] A cleaning head, an actuator that holds and seeks this cleaning head, a sensor unit that detects a collision between the cleaning head and dust, a spindle motor that rotates a magnetic disk mounted thereon, and a spindle motor that controls each of the above members. In a magnetic disk cleaning device comprising a control unit, when the sensor unit detects a collision between the cleaning head and dust while the magnetic disk is rotating normally in the forward direction, the magnetic disk temporarily rotates in the reverse direction. A magnetic disk cleaning device characterized by being equipped with a disk reverse rotation control mechanism.