JPS61260485A - Drive device of disk type recording medium - Google Patents

Abstract

PURPOSE:To write a signal to both disk surfaces by providing a spindle supporting part which rotates together with a rotating shaft with its one end fitted to an inversion rotating shaft and the other end supporting a spindle part and an inverting device means used for giving a rotating movement to the inversion rotating shaft. CONSTITUTION:A microscope 14 is shifted in a horizontal direction to enter the spindle part 5 and a head 11 into a view field. According to a result measured by a length measuring machine 12 at this time, the position of the head 11 with respect to the spindle part 5 is precisely measured, and the write position of a signal is decided. Then a floppy disk 7 is loaded on the spindle part 5 so as to rotate, and the signal is written on one disk surface at the decided write position by means of the head 11. The spindle part 5 is inverted as the disk 7 is loaded on the part 5, and a head table 10 is shifted to return the head 11 to its original position, while the position is strictly measured by the machine 12. The signal is written on the other disk surface of the reversed disk 7. Thus the signal can be written on both disk surfaces.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a device for writing a necessary signal to a predetermined writing position on a disk-type recording medium, and particularly to a device for writing a necessary signal to a position that exactly coincides with the predetermined writing position. It relates to something that can write signals.

[Conventional technology]

A reference disk used to adjust the tracking (radial direction), index (circumferential direction), and azimuth (angular position of the head core relative to the spindle center) of the read/write head during the manufacture of floppy disk drive devices. Due to its nature, it is required that a predetermined signal be written at a position on both disk surfaces that exactly corresponds to each predetermined writing position.The creation of such a reference disk requires a 5-inch disc. Or, in the case of an 8-inch floppy disk, a read/write head writes a signal to one disk surface of the disk that is attached to the spindle and driven to rotate, and then the disk is turned over and attached to the spindle. This was done using a method in which the same head was used to write signals on the other disk surface.

On the other hand, for 3.5-inch floppy disks, which have a chucking hub attached to the disk itself and cannot be installed upside down,
By using a chucking adapter that allows for flip-up installation, you can either write in the same way as a 5-inch or 8-inch disk, or use separate heads for each side of the disk. By providing such a disk, one of two methods has been adopted: writing to each disk surface using separate heads without turning the disk over.

[Problem that the invention seeks to solve]

However, when attaching the disk to the spindle via an adapter, chucking accuracy deteriorates due to adapter processing accuracy and positional repeatability between the adapter and spindle, resulting in a gap between the rotation of the spindle and the rotation of the disk. Eccentricity often occurs. Furthermore, when separate heads are used, work is required to ensure compatibility between both heads, and compatibility may not be fully guaranteed in some cases.

For this reason, with respect to 3.5-inch floppy disks, it is difficult to write signals on both disk surfaces at positions that exactly match the predetermined writing positions, and it is therefore difficult to create a highly reliable reference disk. The problem was that it was difficult.

This invention has been made in view of the above-mentioned points, and is a disk-type recording device that allows signals to be written in a position that exactly corresponds to a predetermined writing position even on a disk having a structure in which a chucking hub is attached to the disk itself. The present invention seeks to provide a drive device for media.

[Means for solving problems]

A drive device for a disk-type recording medium according to the present invention includes a reversing rotating shaft that is supported by a fixed frame in a position perpendicular to the rotating shaft of a spindle portion, and a reversing rotating shaft that is attached at one end to the reversing rotating shaft. It includes a spindle support part that rotates together with the rotating shaft and supports a spindle part at the other end, and a reversing drive means for imparting rotational motion to the reversing rotating shaft.

[Effect]

After a read/write head writes a signal onto one disk surface of the disk type recording medium mounted on the spindle, the reversing drive means is driven to rotate the reversing rotation axis at 18.
Rotate 0 degrees. As a result, the spindle supported by the spindle support rotates around the rotation axis for reversing with the disk-shaped recording medium attached, and when the spindle rotates exactly 1800 times (that is, when the spindle is reversed), the disk The type recording medium is exactly turned over in relation to the read/write head, and in this state, the read/write head can write signals to the other disk surface of the disk.

Therefore, a floppy disk with a chucking hub attached
For disks, signals can be applied to both disk surfaces without the need for adapters or multiple read/write heads (i.e., without eccentricity due to deterioration of chucking accuracy, and without the need to ensure head compatibility). can be written.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an apparatus employing an embodiment of a disk-type recording medium drive device according to the present invention. This device creates a reference disk for adjusting the read/write head when manufacturing a floppy disk drive device for a 3.5-inch floppy disk with a structure in which a chucking hub is attached to the disk itself. It is.

In this device, a frame 2 is fixedly provided on a base 1, and the frame 2 is oriented horizontally (in the direction of arrow A shaft 3 is supported.

One end of an abbreviated spindle support portion 4 is fixedly attached to the rotation shaft 6 for reversal. The spindle support portion 4 rotates together with the rotation shaft 3 for reversal around the rotation shaft B. A frame 6 of the spindle part 5 is fixedly supported at the tip of the spindle support part 4. The spindle portion 5 rotates around the reversal rotation shaft 6 together with the spindle support portion 4 (therefore, together with the reversal rotation shaft 6). This spindle section 5 is used to removably mount a floppy disk 7 consisting of the aforementioned 3.5-inch floppy disk and drive it to rotate. A rotating shaft 8 for rotating the disk 7 , a motor 9 for driving the rotating shaft 8 , and other parts of the spindle section 5 are attached to a frame 6 and supported by a support section 4 . The spindle support part 4 supports the spindle part 5 in such a manner that the extension line of the rotation shaft 8 of the spindle part 5 supported at its tip is perpendicular to the extension line of the rotation shaft 6 for reversal. When the reversing rotation shaft 6 is rotated 180 degrees from the position shown in FIG. 1, the spindle portion 5 is reversed to the position shown in FIG. 3 with the disk 7 still mounted thereon. The center of rotation of the rotating shaft B and the height of the disk 7 in the spindle portion 5 in FIG. The disk 7 is inverted about the axis, and although the disk 7 is located in the same space before and after the inversion, only the disk surface is inverted.

An example of a driving means for rotating the rotation shaft 6 for reversal is shown in FIG. 2. The frame 2 has a rotating shaft oriented in the horizontal direction like the rotating shaft 3 for reversing, and the end of the rotating shaft 3 for reversing on which the spindle support part 4 is not attached is on the same side as the protruding end. A rotary actuator 15 is provided with one end protruding. Boots IJ-16 and 17 are attached to the end of this reversing rotating shaft B and the end of the rotary actuator 15, respectively.
Pulleys 16 and 17 are connected by a belt 18. Thereby, when the rotary actuator 15 rotates, the reversing rotation shaft 6 rotates via the pulley 17, belt 18, and boot IJ-16.

Note that the rotary actuator 15 to the belt 18 are not shown in FIG. 1.

In FIG. 1, a head table 10 supports a read/write head 11 for writing signals to a floppy disk 7 mounted on a spindle section 5, and serves to move the head 11 in the horizontal direction. The current position of the head table 10 in the horizontal direction is determined by the length measuring device 1.
It is measured by 2. A predetermined signal for creating a reference disk is applied to the head 11 from a signal generator 16 .

The microscope 14 is movably supported in the horizontal direction by support means (not shown), and its current position in the horizontal direction is also measured by the length measuring device 12. The microscope 14 is used to verify the horizontal positional relationship between the spindle section 5 and the head 11.

An example of the operation of creating a reference disc using this apparatus is as follows. With the spindle support part 4 in the position shown in FIG. 1 (however, at this time, the disk 7 is not yet attached), the microscope 14 is moved horizontally to bring the spindle part 5 and the head 11 into view. The position of the head 11 relative to the spindle portion 5 is precisely measured based on the measurement result of the length measuring device 12 at that time, and the signal writing position is determined. Next, the floppy disk 7 is attached to the spindle section 5 according to the chucking direction and rotated, a signal is written by the head 11 at the determined writing position on one disk surface, and the head 11 is retracted. By operating the actuator 15 and rotating the rotation shaft 3 for reversal by 180 degrees, the spindle portion 5 is reversed with the disk 7 attached, as shown in FIG. Next, the head table 10 is moved to return the head 11 to its original position while the position is precisely measured by the length measuring device 12, and the head 11 sends a signal to the other disk surface of the disk 7 that has been turned over. Write.

As a result, signals are written to positions that exactly match the determined writing positions on both surfaces of the disk 11.
It is also possible to create a highly reliable reference disc for discs.

In this embodiment, a 3.5-inch floppy disk with a chucking hub attached to the disk itself was used as an example, but this drive device can of course be applied to other disk-type recording media. You can also do this.

Further, in this embodiment, the rotation shaft 3 for reversing is rotated by transmitting the rotation of the rotary actuator via a pulley and a belt, but it may be rotated using other appropriate means.

Furthermore, in this embodiment, the disk 7 is turned over in relation to the head 11 by inverting the spindle section 5, but if possible, the disk 7 can be turned over by inverting the head 11 in the same manner. 7 may be turned over relative to the head 11.

Further, in this embodiment, the drive device according to the present invention is employed in an apparatus for creating a reference disk, but other suitable devices C may be used, especially for writing signals at positions that exactly match predetermined writing positions. This drive device may be used in applications where head compatibility is a problem, etc.).

〔Effect of the invention〕

As described above, according to the drive device for a disk-shaped recording medium according to the present invention, it is possible to write signals to each disk surface using the same read/write head while the disk-shaped recording medium is attached to the spindle section. It is. Therefore, for example, even for a disk-type recording medium with a structure in which a chucking hub is attached, signals can be written on each disk surface without deteriorating the chucking accuracy and without requiring work to ensure head compatibility. Therefore, it becomes possible to write signals on both disk surfaces at positions that closely match each predetermined writing position, and it becomes possible to create a highly reliable reference disk based on this.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a drive device for a disk-type recording medium according to the present invention, and FIG. 2 is a top view showing an example of a drive means for imparting rotational motion to a rotating shaft for reversing in the same embodiment. Figure 3 shows the same embodiment (in which the spindle part is inverted). 1... Base, 2... Frame, 6... Rotating shaft for inversion, 4... - Spindle support part, 5... Spindle part, 6... Frame, 7... Floppy disk, 8
...Rotating axis, 9...Motor, 10...Head table, 11...Reading/writing head, 12...Length measuring device, 13...Signal generator, 14...Microscope, 15・・・
・Rotary actuator, 16.17...Pulley, 18...Belt.

Claims (1)

[Scope of Claims] 1. A spindle part for removably mounting a disc-shaped recording medium and rotationally driving the disc-shaped recording medium, and a fixed frame arranged perpendicular to the rotational axis of the spindle part. a rotating shaft for reversing, which is supported by a rotating shaft; a spindle support portion having one end attached to the rotating shaft for reversing and rotating together with the rotating shaft and supporting the spindle portion at the other end; and a rotational movement of the rotating shaft for reversing. and a reversing drive means for giving a reversal, and the reversing drive means rotates the reversing rotation shaft to rotate the spindle support part, and the entire spindle part supported by the other end of the spindle support part. A driving device for a disk-type recording medium, characterized in that the disk-type recording medium can be reversed together with the disk-type recording medium mounted thereon around the reversing rotation shaft. 2. The spindle part is supported by the spindle support part in such a way that the disk-shaped recording medium mounted thereon occupies the same spatial position before and after reversal. A drive device for a disk-type recording medium according to claim 1. 3. The spindle section is for mounting a floppy disk having a structure in which a chucking hub is attached to the disk itself, and this drive device is used to adjust the magnetic head when manufacturing a floppy disk drive device. A drive device for a disk-type recording medium according to claim 1 or 2, which is used in a device for writing signals necessary for use as a reference disk on both surfaces of the floppy disk. .