JPH0218748A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To stablize the recording and reproducing of information with a magnetic head integrated in a negative pressure slider by causing the inclination of the negative pressure slider to be larger in an outer peripheral side rather than the inner peripheral side of a recording medium. CONSTITUTION:A negative pressure slider 3 is fit through a conversion supporting stand 4 to a mobile stand 5 so as to be brought into contact with a disk 1. This conversion supporting stand 4 is inclined in advance and can be moved in the radius direction of the disk 1 by the mobile stand 5 which loads this stand 4. On the other hand, a sliding board 8 is provided on the flowout edge side of the disk 1 in the mobile stand 5 and slided with a press guiding rod 7 which is inclined so as to be high when it is moved in the inner peripheral side of the disk 1. Accordingly, when the mobile stand 5 is moved from the outer peripheral side of the disk 1 to the inner peripheral side, as the stand is moved, the inclination of the mobile stand 5 is changed and the inclination of the loaded negative pressure slider 3 is also changed. Thus, the contact between the negative pressure slider and disk is made stable and the recording and reproducing of the information by the magnetic head, which is integrated in the negative pressure slider, can be stablized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording/reproducing device, and particularly to a recording/reproducing device suitable for recording/reproducing information using a flexible recording medium. It is.

[Conventional technology] First, the prior art will be explained with reference to FIG.

FIG. 11 is a side sectional view showing a magnetic head support mechanism of a conventional recording/reproducing device.

The recording and reproducing device shown in FIG. 11 is a video floppy disk device.

In FIG. 11, 1 is a floppy disk (hereinafter simply referred to as a disk), 21 is a hub, 22 is a spindle, 2
3 is a pad arm, 24 is a pad, 25 is a magnetic head,
26 is a cartridge, and 27 is a helad carriage.

As shown in FIG. 11, a conventional video floppy disk device generally has a structure in which the disk 1 is pressed against the magnetic head 25 by a pad 24 in order to stabilize the contact between the disk 1 and the magnetic head 25. This magnetic head 25 is fixed to a head carriage 27, and is configured so that it only moves within the range of the pad 24 and does not change its posture.

Recently, a negative pressure slider with a built-in magnetic head has been developed relative to the rotational reference plane of the disk.

There is a magnetic recording device that records and reproduces information by tilting the outflow end of the disk so that it is separated from the inflow end, but this inclination remains the same on both the inner and outer circumferences of the disk.

In addition, as a conventional magnetic disk device, for example, the technique described in Japanese Patent Publication No. 58-15870 is known.

[Problems to be Solved by the Invention] In a magnetic recording device, stable contact between a magnetic head and a disc is important.

In a structure in which the magnetic head 25 is fixed to the spatula carriage 27 as in the prior art shown in FIG. There was no consideration given to

In addition, the slope of the negative pressure slider in which the magnetic head is incorporated is the same on both the outer and inner sides of the disk, and the position of the negative pressure slider in the direction in which it is pressed against the disk is fixed. If the distance is constant, there is a problem that the margin for stable recording and reproduction becomes smaller depending on the position (track direction) on the disk where recording and reproduction is performed.

The present invention has been made in order to solve the above-mentioned problems in the conventional technology, and it simplifies the adjustment of the mounting of the negative pressure slider, stabilizes the contact between the negative pressure slider and the disk, and increases the recording/reproducing margin. Therefore, it is an object of the present invention to provide a recording and reproducing device that can stably record and reproduce information using a magnetic head incorporated in a negative pressure slider.

[Means for Solving the Problems] In order to achieve the above object, the configuration of the recording and reproducing apparatus according to the present invention is a negative pressure type that rotates a flexible recording medium and incorporates a recording and reproducing converter. Recording and reproducing' where information is recorded and reproduced by tilting the slider with respect to the rotational reference plane of the recording medium so that the outflow end of the recording medium is separated from the inflow end.
pi, the negative pressure slider is configured such that the slope of the negative pressure slider is larger on the outer circumferential side of the recording medium than on the inner circumferential side.

Further, the slope of the negative pressure slider is set to be larger on the outer peripheral side than on the inner peripheral side of the recording medium, and the position of the negative pressure slider is set so that the position of the negative pressure slider is set relative to the rotation reference plane of the recording medium. The outer circumferential side is separated from the inner circumferential side.

More specifically, a moving stage is provided on which a negative pressure slider is mounted via a transducer support having an inclined surface, and a feed guide means for moving this moving stage from the outer periphery of the recording medium toward the inner periphery is attached to the negative pressure slider. A movable base portion is provided on the inflow end side of the recording medium in the negative pressure slider, and is provided on the outflow end side of the recording medium in the negative pressure slider as the movable base moves from the outer periphery of the recording medium toward the inner periphery. An inclined guide means is provided which operates in a direction approaching the rotation reference plane of the recording medium with the position of the feed guide means as the center of rotation.

[Operation] The magnetic head support mechanism of the recording/reproducing device using the above-mentioned technical means is capable of changing the inclination angle and the amount of pressing of the negative pressure slider against the disk depending on the position of the disk in the radial direction (track direction) relative to the recording medium. It can do the following:

The flat negative pressure slider surface facing the rotating disk is
When the outflow side of the disk is tilted away from the inflow end of the disk with respect to the rotation reference plane of the disk, negative pressure is generated due to the fluid force between the negative pressure slider and the disk, and a force to attract the disk is exerted. . A disk that rotates once generally tends to pulsate on the outer circumference side due to initial deflection flutter, so the inclination angle is increased to prevent this vibration and the suction force is increased. Furthermore, since there is less vibration on the inner circumferential side, the angle of inclination may be small. Furthermore, the apparent rigidity of the disc is greater on the inner circumferential side than on the outer circumferential side, and in addition, the circumferential speed is low, so the fluid force between the negative pressure slider and the disk is small, and the negative pressure slider is attached to the disk. press (
(contact) direction and works to make contact easier.

This makes it easy to install and adjust the magnetic head.
Furthermore, the margin for stable recording and reproduction in the track direction can be increased.

[Embodiments] Hereinafter, each embodiment of the present invention will be described with reference to FIGS. 1 to 10.

FIG. 1 is a tilted view of a magnetic head support mechanism of a recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of the apparatus of FIG. 1 as viewed from the disk outer circumferential side, and FIG. 4 is a recording/reproducing characteristic diagram when the inclination angle of the negative pressure slider is changed, and FIG. 4 is a recording/reproducing characteristic diagram when the negative pressure slider pressing displacement amount is changed.

In FIG. 1, 1 is a flexible disk (hereinafter referred to as a disk) related to a flexible recording medium, 3 is a negative pressure slider in which a magnetic head is incorporated, 4 is a transducer support having an inclination angle, and 5 is a moving table; 6 is a feed screw related to a feed guide means for moving the moving table 5 from the outer circumference to the inner circumference of the disk 1 (it can also be moved from the outer circumference to the inner circumference);
The feed screw 6 is provided so as to pass through the movable stage 5 on the inflow end side of the disk in the negative pressure slider 3.

Further, 7 is a pressing guide rod provided on the side of the moving table 5 corresponding to the outflow end side of the disk in the negative pressure slider 3;
This pressing guide rod 7 is arranged so as to be inclined so that the outer peripheral side of the disk 1 is lower and the inner peripheral side is higher. Reference numeral 8 denotes a sliding plate for sliding the movable table 5 along the pressing guide rod 7, and the pressing guide rod 7 and the sliding plate 8 are used to move the movable table 5 and adjust the axial center position of the feed screw 6. It constitutes an inclined guide means that operates the rotation center in a direction approaching the rotation reference plane of the disk 1. Reference numeral 9 denotes a rotation drive unit that rotates the feed screw 6, and details of the drive mechanism are not shown. Further, 10 indicates a base on which each of the above-mentioned parts is placed.

In the magnetic head support mechanism 11 shown in FIG. 1, the disk 1 rotates in the direction of arrow 2. As shown in FIG. The negative pressure slider 3 is
It is attached to a moving base 5 via a conversion support base 4 so as to be in contact with the disk 1 . This conversion support table 4 is inclined in advance, and can be moved in the radial direction of the disk 1 by a moving table 5 on which it is mounted. That is, in the embodiment shown in FIG. 1, the rotary drive section 9 and the feed screw 6 cause the movable table 5 to reciprocate (in the outer periphery of the disk 1 and in the radial direction between the inner layers).

On the other hand, a sliding plate 8 is provided on one end surface (the disk outflow end side) of the moving table 5, and slides against the pressing guide rod 7 which is inclined to become higher as it moves toward the inner circumference of the disk 1. do. Therefore, when the feed screw 6 is rotated and the moving table 5 is moved from the outer circumference to the inner circumference of the disk 1, the inclination of the moving table 5 changes accordingly, and the inclination of the negative pressure slider 3 mounted thereon also changes. become.

FIG. 2 shows the inclination relationship of the negative pressure slider 3 with respect to the disk 1.

As shown in FIG. 2, there is a converter support stand 4 on the moving table 5, and a negative pressure slider 3 is further mounted thereon. The inclination of the negative pressure slider 3 shown by the solid line indicates the case where it is located on the outer peripheral side of the disk 1, and the inclination is determined by the inclination of the converter support 4. This inclination is set so that the outflow end of the disc 1 is separated from the inflow end of the negative pressure slider 3 with respect to the rotational reference plane of the disc 1. From this state, when the feed screw 6 is rotated to move the movable base 5 toward the inner circumferential side of the disk 1, the movable base 5 is rotated around the axial center position of the feed screw 6 by the pressing guide rod 7 and the m moving plate 8. is tilted to the opposite side from the initial setting by a tilt angle of 12. Therefore, on the inner peripheral side of the disk 1, the negative pressure slider 3' is in the state shown by the broken line. This means that the slope of the negative pressure slider 3 is set to become smaller as it moves toward the inner circumference of the disk 1.

As mentioned above, the center of rotation of the moving table 5 is the axial center position of the feed screw 6, which is located close to the disk inlet end of the negative pressure slider 3, so the state of the negative pressure slider 3' is the same as that of the negative pressure slider. 3, this means that the rotation reference plane of the disk 1 is set closer to the rotation reference plane.

As a result of the above, the contact between the negative pressure slider 3 and the disk 1 is constant at any position in the radial direction of the disk 1.

Therefore, the recording and reproducing of information by the magnetic head incorporated in the negative pressure slider 3 becomes stable.

FIG. 3 shows the recording and reproducing characteristics when the inclination angle of the negative pressure slider with respect to the position (track) of the head according to this embodiment is changed. As can be seen from the figure, the inclination angle of the recording/reproducing area tends to be larger on the outer circumferential side than on the inner circumferential side. Furthermore, as shown by the broken line in the figure, it can be seen that when the inclination angle is fixed at 3 degrees on the outer circumference side, the recording/reproduction margin on the inner circumference side becomes smaller.

FIG. 4 shows the recording and reproducing characteristics when the amount of displacement of the head against the disk is changed with respect to the position (track) of the head according to this embodiment. From the figure, it can be seen that it is necessary to make the amount of pressing displacement smaller on the inner circumferential side than on the outer circumferential side. Here, at about -1.5m on the outer circumferential side, about -0
, 5 rivers.

In this embodiment, the recording/reproducing margin is increased by a mechanism that continuously and automatically changes the tilt angle and the amount of pressing displacement.

According to this embodiment, by changing the inclination of the negative pressure slider and the gap between the slider and the disk depending on the radial position of the disk, the contact between the negative pressure slider and the disk can be made stable. Therefore, the recording and reproducing of information by the magnetic head incorporated in the negative pressure slider becomes stable, and there are effects such as increasing the recording and reproducing margin.

Furthermore, the installation and adjustment of this negative pressure slider is simplified for the above-mentioned reason, and there is also the effect that the assembly work efficiency is improved.

5 and 6 are partially enlarged views of a magnetic head support mechanism according to another embodiment of the present invention, viewed from the disk outer circumferential side. In the figure, the same reference numerals as in FIG. 2 are the same parts as in the previous embodiment.

The explanation will be omitted.

In the embodiment shown in FIGS. 5 and 6, the negative pressure slider 3
′ indicates the amount of displacement due to pressing.

In the example of FIG. 5, the disk at load slider 3],
This shows that even when the feed screw 6 is set at the inflow end position and the negative pressure slider 3' moves toward the inner circumferential side (broken line), the inclination angle changes but the pressing displacement amount remains the same.

Furthermore, the example shown in FIG. 6 shows that when the feed screw 6 is located at the center of the moving table 5, the inclination angle changes at the center of the negative pressure slider 3, and the amount of pressing displacement becomes negative. .

Next, FIG. 7 is a perspective view of a magnetic head support mechanism of a recording/reproducing apparatus according to another embodiment of the present invention, and FIG. 8 is a partially enlarged cross-sectional view of the apparatus of FIG. 7 as seen from the outer circumferential side of the disk. In FIG. 6, the same reference numerals as those in FIGS. 1 and 2 are equivalent parts, so the explanation thereof will be omitted.

In FIGS. 7 and 8, reference numeral 13 denotes an inclined plate provided on the base 10'', and this inclined plate 13 has an inclination that increases from the outer circumference of the disk 1 toward the inner circumference.

14 is a guide plate provided on one end surface (disc outflow end side) of the moving table 5A; 15 is a holding piece fixed to the inclined plate 13 and elastically abutting on the guide plate 15; 6 is the moving table 5;
This is a submerged ball that is attached to A and moves along the inclined plate 13J-. These inclined plates 13. The guide plate 14, the presser piece 15, and the sliding member 16 constitute an inclined guide means for operating the moving table 5A in a direction approaching the rotation reference plane of the disk 1 with the precise position of the feed screw 6 as the center of rotation. There is.

According to the embodiment shown in FIGS. 7 and 8, it can be easily understood by looking at the figures that the same functions and effects as those described in the embodiment shown in FIGS. 1 and 2 can be expected.

Next, FIG. 9 is a perspective view of a magnetic head support mechanism of a recording/reproducing apparatus according to still another embodiment of the present invention.

FIG. 10 is a partially enlarged cross-sectional view of the apparatus shown in FIG. 9 as viewed from the disk outer circumferential side. In FIG. 0, the same reference numerals as those in FIGS.

In FIGS. 9 and 10, reference numeral 17 denotes a guide shaft that guides the movement of the moving table 5B in the disk radial direction. It is provided. 18 is
A drive box that also serves as the base of the magnetic head support mechanism.
Although not shown, a drive mechanism for moving the moving table 5B in the radial direction of the disk is incorporated. Reference numeral 19 denotes a bearing mounted on the movable table 5B, and this bearing 19 is a bearing member for reciprocating the movable table 5B on the guide shaft 17. 2o is a drive bin connected to the drive j mechanism in the drive box 18. These guide shaft 17, drive box 18.
Using the bearing 19 and the drive bin 20, the moving table 5B is moved from the outer circumference to the inner circumference of the disk 1 (
(also movable from the outer periphery to the inner periphery) constitutes a feeding guide means. The tilt guide means of the movable table 5B is the same as the tilt guide means shown in FIGS. 1 and 2.

According to the embodiment shown in FIGS. 9 and 10, the moving platform 5B is
It is moved by a drive mechanism in 9 via a drive pin 20, and is guided by a guide shaft 17 to reciprocate in the radial direction of the disk. Changing the inclination of the negative pressure slider and the gap between the negative pressure slider and the disk 1 depending on the radial position of the disk 1 is exactly the same as in the embodiment shown in FIGS.

[Effects of the Invention] As described above, according to the present invention, the installation of the negative pressure slider can be easily adjusted, the contact between the negative pressure slider and the disk can be stabilized, and the recording/reproducing margin can be increased. Accordingly, it is possible to provide a recording and reproducing device that can stably record and reproduce information using a magnetic head incorporated in a negative pressure slider.

[Brief explanation of the drawing]

1 is a perspective view of a magnetic head support mechanism of a recording/reproducing apparatus according to an embodiment of the present invention; FIG. 2 is a partially enlarged cross-sectional view of the apparatus of FIG. 1 as viewed from the outer periphery of the disk; is a recording and reproducing characteristic diagram when the inclination angle of the negative pressure slider is changed, FIG. 4 is a recording and reproducing characteristic diagram when the negative pressure slider pressing displacement amount is changed, and both FIGS. 5 and 6 are FIG. 7 is a partially enlarged view of a magnetic head support mechanism according to another embodiment of the present invention as seen from the disk outer circumferential side; FIG. 7 is a perspective view of a magnetic head support mechanism of a recording/reproducing apparatus according to another embodiment of the present invention; 8 is a partially enlarged cross-sectional view of the apparatus shown in FIG. 7 as viewed from the disk outer circumferential side, and FIG. 9 is a perspective view of a magnetic head support mechanism of a recording/reproducing apparatus according to still another embodiment of the present invention. Figure 10 is
FIG. 9 is a partially enlarged cross-sectional view of the device viewed from the outer circumferential side of the disk, and FIG. 11 is a side cross-sectional view showing a magnetic head support mechanism of a conventional recording/reproducing device. 1... Disc, 3, 3'... Negative pressure slider, 4.
・Converter support stand, 5.5', 5', 5A, 5B...
・Moving table, 6... Feed screw, 7... Pressing guide rod, 8
...Sliding plate, 9... Rotation drive unit, 13... Inclined plate, 14... Guide plate, 15... Holding piece, 16...
Sliding taste, 17... Guide shaft, 18... Drive box,
19... Bearing, 20... Drive bottle.

Claims (1)

[Claims] 1. A flexible recording medium is rotated, and a negative pressure slider incorporating a recording/reproducing transducer is placed so that the outflow end of the recording medium is relative to the rotational reference plane of the recording medium. A recording and reproducing device that records and reproduces information by tilting it away from an inflow end, characterized in that the negative pressure slider is configured such that the slope of the negative pressure slider is larger on the outer circumferential side of the recording medium than on the inner circumferential side. Recording and playback device. 2. Rotate the flexible recording medium and move the negative pressure slider incorporating the recording/reproducing converter so that the outflow end of the recording medium is separated from the inflow end with respect to the rotational reference plane of the recording medium. In a recording and reproducing apparatus that records and reproduces information by tilting the recording medium, the inclination of the negative pressure slider is made larger on the outer circumferential side of the recording medium than on the inner circumferential side, and the position of the negative pressure slider is adjusted so that the position of the negative pressure slider is A recording/reproducing apparatus characterized in that the recording medium is configured such that the outer circumference side of the recording medium is separated from the inner circumference side with respect to a rotation reference plane of the medium. 3. In any one of claims 1 and 2, there is provided a moving stage on which the negative pressure slider is mounted via a transducer support having an inclined surface, and the moving stage is mounted on the outer periphery of the recording medium. A feed guide means for moving the recording medium from the outer circumference toward the inner circumference is provided on the inflow end side of the recording medium in the negative pressure slider, and as the moving stage moves from the outer circumference of the recording medium toward the inner circumference, the feed guide means moves the recording medium from the outer circumference toward the inner circumference. The present invention is characterized by providing an inclined guide means for operating a movable table portion corresponding to the outflow end side of the recording medium in the pressure slider in a direction approaching the rotation reference plane of the recording medium, with the position of the feed guide means as the center of rotation. A recording/playback device for