JPH01128217A - Cleaning disk - Google Patents

Abstract

PURPOSE:To attain the cleaning of a holding part and to prevent the occurrence of data errors by constituting a cleaning disk for a recording reproducing device by means of a first cleaning member which is slidably brought into contact with a head and a second cleaning member which is slidably brought into contact with the disk holding part in a disk rotary system. CONSTITUTION:For cleaning a spindle hub 6 part, a rotary block pin 5 is engaged into a cassette 1, a wiping material 4 is overlapped on the hub 6 part in a fixed state. A spindle 10 is inserted into the wiping material 4 and the holes 4a and 4b of a center hub 3, and the hub 3 is attracted by a magnet 9, whereby the wiping material 4 is pressure-welded on the surfaces of a disk holding stand 7 and a driving pin 8. Thus, a cleaning sheet 2 is locked by the rotation blocking pin 5 and a disk mainbody is set to be unable to rotate. The hub part 6 is set to be able to rotate and the wiping material 4 which does not rotate is abutted on the hub 6. For cleaning the head, the wiping material 4 is peeled, the pin 5 is pulled out, and the disk is set to rotate, whereby the sheet 2 is abutted on the disk.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Applications] The present invention relates to a cleaning disk used in a disk recording and reproducing apparatus that records or reproduces information on a disk as a rotating recording medium using a predetermined method using a recording or reproducing head. It is something.

[Prior Art] In a magnetic disk recording and reproducing device such as a floppy disk drive device, as the number of times the magnetic disk medium is used increases, magnetic powder or other dust is peeled off from the surface of the medium.
Dust etc. adhere to the magnetic head. For this reason, the recording and reading operations performed on the medium by the magnetic head may not be performed normally.

For this reason, the above-mentioned cleaning disk has conventionally been loaded into a magnetic disk recording and reproducing device in the same way as a magnetic disk of a recording medium, and is driven to rotate so that it slides into contact with a magnetic head, and removes magnetic particles and dust that have adhered to the magnetic head. 2. Description of the Related Art A cleaning disk equipped with a cleaning member that performs cleaning by removing deposits such as dirt and dust is known.

[Problems to be Solved by the Invention] In a magnetic disk recording/reproducing device, it is not only the magnetic head that needs to be kept clean; in particular, the disk holding section of the drive system that rotates the magnetic disk needs to be kept clean. be. This is because if foreign matter adheres to the disk holding portion, the sliding friction between the disk holding portion and the disk changes, and the state of transmission of rotational force changes. In order to accurately perform the so-called chucking process that holds the magnetic disk, and to accurately align the tracks on the media with the track positions on the magnetic head, it is necessary to accurately perform recording and reproducing operations.
A constant rotational torque must always be transmitted from the disk holder to the disk.

On the other hand, with magnetic disks such as 3.5-inch floppy disks, the center hub fixed to the center of the medium is exposed from the disk cassette, so when the user handles the disk by hand, the center hub is exposed. Grease and other foreign substances often adhere to them. When the disk is loaded into a magnetic disk recording and reproducing apparatus, the above-mentioned deposits such as grease are transferred from the center hub of the disk to a disk holding portion that holds the center hub of the disk, such as a so-called spindle hub.

In this way, when oil or foreign matter adheres to the spindle hub, the sliding friction between the spindle hub and the disk changes, and when chucking the disk starts rotating before it is accurately positioned, preventing eccentricity and ensuring accurate chucking. Track slippage is likely to occur. This causes errors in recorded and reproduced data.

Furthermore, if the above-mentioned deposit is a solid substance, a clearance may occur between the disk sliding surface of the magnetic head and the magnetic film surface of the disk medium, and this loss may similarly cause an error.

Conventional cleaning disks cannot prevent these problems because they only clean the magnetic head. If errors caused by deposits as mentioned above occur frequently, service personnel must disassemble the magnetic disk recording/reproducing device and clean the spindle hub, which wastes unnecessary time for the user. There was a problem in that the service cost was extremely high as well as resulting in a loss of target.

[Means for Solving the Problems] In order to solve these problems, the present invention provides a disc recording/reproducing method in which information is recorded or reproduced in a predetermined manner using a recording or reproducing head on a disc as a rotating recording medium. In the cleaning disk used in the device, a first disk that comes into sliding contact with the head to clean the head.
and a second cleaning member that cleans the medium disk by slidingly contacting the disk holding section of the rotational drive system that rotationally drives the medium disk of the disk recording and reproducing apparatus.

[Function] According to the structure of the leaning disk, it is possible to clean the recording or reproducing head as well as the disk holding portion of the disk rotation drive system, which could not be done with conventional cleaning disks.

[Embodiments] Details of embodiments of the present invention will be described below with reference to the attached drawings.

1 and 2 are a sectional view and a plan view illustrating the structure of a cleaning disk according to an embodiment of the present invention.

This cleaning disk is configured to be used in a 3.5-inch floppy disk drive (hereinafter referred to as FDD) as a magnetic disk recording/reproducing device, and the main body of the cleaning disk is housed in a cassette 1. ing.

The cassette 1 is constructed as a flat rectangular hollow casing similar to a 3.5-inch floppy disk cassette, and a center hole 1a is formed as an opening in the center of one surface. Further, a cylindrical convex portion 1b is formed on one inner surface of the cassette 1 facing the center pole 1a.

Furthermore, a rotation prevention bin 5 for preventing rotation of the cleaning disk body, which will be described later, is detachably attached to the cassette 1. The rotation prevention pin 5 is made of a material having suitable elasticity, such as plastic. Further, the rotation prevention bottle 5 has a triangular protrusion 5a and a groove 5b formed at one end thereof, and is inserted through holes 1c and ld formed oppositely in the upper and lower sides of the cassettes 1-1. Protrusion 5
The insertion of the 8 parts is done by elastically constricting the end of the rotation prevention pin 5 through the groove 5b. The inserted protrusion 5a enters a similarly triangular groove formed on the inner surface of the hole IC, and the end of the rotation prevention bottle 5 spreads, and the rotation prevention bottle 5 is engaged with the groove, whereby the rotation prevention bottle 5 is inserted into the cassette. !・
It is locked at 1 and removed. Also rotation prevention bin 5
By pressing the upper end face of the bottle in FIG. 1, the projection 5a is disengaged and the rotation prevention bottle 5 can be easily pulled out and removed.

Further, a head window 1e is formed in the cassette 1 as an opening for bringing a cleaning sheet 2, which will be described later, into sliding contact with the magnetic head.

On the other hand, the main body of the cleaning disk housed in the force set 1 is composed of a cleaning sheet 2, a center hub 3, and a wiping moon 4, and is formed into a circular shape with the same size as the media of a 35-inch floppy disk. A center hub 3 is fixed to the center of the seat 2, and a wiping material 4 is further fixed to the lower surface of the center hub 3.

As will be described later, the cleaning sheet 2 comes into sliding contact with the magnetic head to clean the magnetic head, and is made of paper, nonwoven fabric, or the like, and is impregnated with a cleaning agent such as a nonvolatile surfactant.

Further, the cleaning sheet 2 is formed with a hole 2a through which the rotating element bin 5 is passed. When the rotating element bin 5 is loaded into the cassette 1 through the hole 2a, the cleaning sheet 2 is locked to the rotating element bin 5, and the rotation of the disk body is prevented.

Further, the center hub 3 is formed into a disk shape with a flange 3a made of magnetic metal, and the cleaning sheet 2 is fixed to the flange 3a. Also, in the center of the cleaning sheet 2 is a hole 3 into which a spindle shaft, which will be described later, is inserted.
b is formed, and a hole 3C for inserting a drive bin, which will be described later, is similarly formed in the vicinity of the hole 3C.

Next, the wiping moon 4 is for cleaning the spindle hub part of the FDD, which will be described next. It is formed into a thick circular sheet made of nonwoven fabric, etc., and is impregnated with a cleaning agent such as a non-volatile surfactant. has been done. A hole 4a is formed in the center of the wiping material 4 into which the spindle shaft of the FDD is inserted. Also, the center hub 3 is attached to the wiping material 4.
A protrusion 4b is formed at a position corresponding to the hole 3c,
It is fitted in such a way as to close the hole 3c and abuts against the convex portion 1b of the cassette 1, so that the wiping material 4 will not be dented even if it is pressed by a drive bottle, which will be described later. The wiping moon 4 is fixed to the center hub 3 with a weak adhesive so that it can be easily peeled off.

Next, the FD to which the cleaning disk of this embodiment is installed
The structure of the spindle hub section D is shown in FIG. 3 and will be explained.

In FIG. 3, reference numeral 10 denotes a spindle shaft which is the output rotation shaft of a spindle motor (not shown) which is a rotational drive source for the floppy disk. At the tip of the spindle shaft 10 is a spindle hub 6 for holding a floppy disk.
is fixed.

The spindle hub 6 is formed into a disk shape, and a disk holding base 7 formed into a ring-shaped plate is fixed to the upper surface of the spindle hub 6. A magnet 9 for attracting the center hub of the floppy disk is fixed to the inside of the disk holding stand 7 on the upper surface of the spindle hub 6.

Furthermore, a drive pin 8 for rotating the disk is attached to the spindle hub 6. The drive bin 8 is supported by a leaf spring 11 provided on the lower surface of the spindle hub 6, is supported so as to be movable up and down through a hole formed in the spindle hub 6, and is always biased upward in the figure. .

Next, the cleaning operation of this embodiment will be explained.

When cleaning the spindle hub 6, the disk of this embodiment is stacked and mounted on the spindle hub 6 in the state shown in FIG. 1, that is, with the rotating element pin 5 fitted and the wiping material 4 fixed. Ru. The spindle shaft 10 is inserted into the holes 4a and 3b of the wiping material 4 and the center hub 3, and the center hub 3 is attracted by the magnet 9, and the wiping material 4
is pressed against the upper surface of the disk holding table 7 and the upper surface of the drive pin 8. In this state, the cleaning sheet 2 is locked by the rotating element pin 5, so that the main body of the disk is in an unrotatable state.

Then, as the spindle motor (not shown) is driven and the spindle hub 6 rotates, the non-rotating wiping material 4 comes into sliding contact with the upper surfaces of the disk holding table 7 and the drive pin 8 to remove grease and foreign matter adhering to them, thereby cleaning them. It is done.

Next, when cleaning the magnetic head, remove the disk from the state shown in FIG. 1 by peeling off the wiping material 4, remove the rotating element pin 5, and stack the disk body on the spindle hub 6 with the disk body rotatable. It will be installed. The spindle shaft 10 is inserted into the hole 3b of the center hub 3, the center hub 3 is attracted by the magnet 9, and the drive pin 8 is fitted into the hole 3C of the center hub 3 and engaged, so that the center hub 3 is moved onto the spindle hub 6. is chucked by.

Then, the spindle hub 6 is driven by the spindle motor.
rotates, the center hub 3 is rotationally driven via the drive bin 8, and the cleaning sheet 2 is rotationally driven. The cleaning sheet 2 is attached to the head window 1e of the cassette 1.
Cleaning is performed by removing magnetic particles and other foreign matter adhering to the magnetic head that is in sliding contact with the magnetic head through the magnetic head.

As described above, according to the cleaning disk of this embodiment, the wiping material 4 can be attached and detached, and the rotating element pin 5 can be attached and detached.
By switching the disk body between a rotatable state and a non-rotatable state, both the magnetic head cleaning and the spindle hub 6 portion can be cleaned. Since the spindle hub 6 can be cleaned, which was not done with conventional cleaning disks, accurate chucking can be performed in the FDD, recording and reproducing operations can be performed accurately, and data errors can be prevented. Not only can the life of the FDD be extended, but the cleaning of the spindle hub 6 by a service technician is no longer necessary, and service costs can be significantly reduced.

By the way, the switching between the rotatable and non-rotatable states of the main body of the disk can be performed not by the above-mentioned rotation prevention pin 5 but also by other structures. Examples thereof are shown and explained in FIGS. 4 to 6.

In the structure shown in FIGS. 4 to 6, a rotation preventing member 12 similar in appearance to a write protector notch of a floppy disk prevents and releases the rotation of the main body of the disk.

The rotation blocking member 12 is made of a material having suitable elasticity such as plastic, and has two arm portions 12a, 12a for sandwiching the disk cleaning sheet 2, and a knob 12b for operating the rotation blocking member 12. . The rotation prevention member 12 is attached to one corner of the cassette 1 by an arrow A.
, B can be moved in the directions of arrows A and B by pressing the knob 12b with a finger through an elongated hole 1f formed in the male cassette 1, which is slidably fitted in the direction of arrows A and B.

On the other hand, on the inner surface of the force set 1, convex portions 1g and Ig having sloped surfaces facing upward and downward are protrudingly provided in areas where the arm portions 12a and 12a of the rotation preventing member 12 move.

With this structure, when the rotation preventing member is moved in the direction of arrow B as shown in FIG.
2a are spaced apart, and the cleaning sheet 2 is in an unrestricted rotatable state. That is, the disk body is in a rotatable state.

Next, when the rotation blocking member 12 is moved in the direction A as shown in FIG. 2 is held and pressed against it. The rotation of the cleaning sheet 2 is prevented by the frictional force between the arms 12a, 12a and the cleaning sheet 2, and the entire disk body becomes unrotatable. In this way, rotation of the disk body can be prevented and released, and the same effects as those of the previously described embodiments can be obtained. In addition, in this structure, the frictional force acting between the arm portions 12a and the cleaning sheet 2 is further increased by forming a non-slip material such as a knurling on the inner surface of the end portion of the arm portions 12a, 12a that comes into contact with the cleaning sheet 2. Something will happen.

As mentioned above, the leaning disk can be used not only in 35-inch FDDs but also in various types of disk recording and reproducing devices, and of course similar effects can be expected.

[Effects of the Invention] As is clear from the above description, according to the present invention, cleaning is performed for use in a disk recording and reproducing apparatus that records or reproduces information on a disk as a rotating recording medium using a predetermined method using a recording or reproducing head. In the disk, a first member slides into contact with the head to clean the head.
The structure includes a cleaning member and a second cleaning member that cleans the disk by slidingly contacting the disk holding section of the rotation drive system that rotationally drives the medium disk of the disk recording/playback device. In addition to cleaning the disc holder, it is also possible to clean the disc holder, which could not be done with conventional cleaning discs. By cleaning the disc holder, the disc recording and reproducing device can stably and reliably transmit the rotational driving force to the disc, ensure that the disc is chucked accurately, perform recording and reproducing operations accurately, and prevent data errors. Occurrence can be prevented. Furthermore, the life of the disk recording/reproducing device can be extended. Further, by using the cleaning disk of the present invention, excellent effects such as significantly reducing service costs can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of a cleaning disk according to an embodiment of the present invention, FIG. 2 is a plan view of the same disk, and FIG. 3 is a sectional view showing the structure of the spindle hub portion of an FDD using the same disk. , FIG. 4 is a cross-sectional view of a main part of a cleaning disk according to another embodiment of the present invention in a rotation-blocking state, FIG. 5 is a cross-sectional view of a main part of the same embodiment in a rotation-blocking state, and FIG. FIG. 3 is a plan view of a disk according to an example. 1... Cassette 2... Cleaning sheet 3... Center hub 4... Wiping material 5... Rotation prevention pin 6... Spindle hub 8... Drive bin 10... Spindle shaft 12.・Rotation prevention member

Claims (1)

[Claims] In a cleaning disk used in a disk recording and reproducing device that records or reproduces information in a predetermined manner on a disk as a rotating recording medium using a recording or reproducing head, a first cleaning member that comes into sliding contact with the head and cleans the head; A cleaning disk characterized by comprising a second cleaning member that comes into sliding contact with a disk holding section of a rotational drive system that rotationally drives the medium disk of a disk recording and reproducing device to clean it.