JPS5830294Y2 - magnetic recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording device having a flexible magnetic recording medium and a recording head for a plurality of tracks.

Conventionally, a magnetic recording device using a flexible magnetic recording medium is generally known as a flexible desk device.

The magnetic head of this device is a single head with one track, and writing and reading operations are performed by moving this single head to the track 1 to be accessed.

However, this method of addressing by moving the head has the disadvantage that the access time is extremely long.

Therefore, the concept of "multi-head" has recently been developed, and magnetic heads are arranged over all the tracks, making it possible to access the necessary tracks.

Initially, this device had the disadvantage that the recording medium and the magnetic head were significantly worn out due to the rotational friction of the recording medium, as the magnetic head was arranged so that it was in constant contact with the magnetic head, which could accommodate multiple tracks. .

Therefore, as a means to further eliminate these drawbacks, the first method is
As shown in the figure, a multi-head is being considered in which a minute gap is provided between a recording medium and a recording head corresponding to a plurality of tracks.

However, although the above-mentioned drawbacks have been solved in the above-mentioned multi-head, the following new problems have occurred.

That is, it is difficult to maintain a uniform gap between the recording medium and the recording head corresponding to a plurality of tracks.

For example, even if only the recording heads at both left and right ends of the multi-head 8 are placed at an appropriate gap during 10 rotations of the recording medium, the gap at the center of the multi-head is too wide, making recording difficult ( On the contrary, if the central part of the multi-head 1 is arranged with an appropriate gap, there will be no gap between the left and right ends, so the wear at both ends of the recording medium 1 and the multi-head will be significant, and as mentioned above, However, this method has the disadvantage of shortening the lifespan of the recording medium and the recording head.

This invention maintains the gap between the recording medium and the recording head corresponding to multiple tracks stably at an almost uniform minute interval over the entire recording head, thereby extending the life of the recording medium and the recording head, and at the same time maintaining the gap in the track direction. The present invention aims to provide a magnetic recording device that requires very short selection time and is inexpensive.

An embodiment of the present invention will be described below with reference to FIGS. 3 to 5.

In the figure, 1 is a flexible disk-shaped magnetic recording medium, 2 is a disk-shaped table having a through hole 2a in the center, and is fixed to a frame (not shown).

Further, reference numeral 3 denotes a rotating shaft loosely fitted into the through hole 2a of the table 2, and this rotating shaft 3 is supported by a frame (not shown).

The head 3a of the rotating shaft 30 has an upper surface protruding from the upper surface of the table 2 at an appropriate distance, and the center of the recording medium 1 is attached to the upper surface of the head 3a, and the lower end A pulley 4 is fixed to the portion and is connected via a belt 5 to a motor 6 serving as a drive source, so as to rotate the recording medium 1 at high speed.

Note that 7 is a nut for attaching the recording medium 1 to the head 3a of the rotating shaft 30.

10 is a recording head which is provided through a long hole 2b drilled in the chiffle 2 and corresponds to a plurality of tracks; located on the front side of this recording head 10 is a plurality of through holes 11a; 11b... are bored in the tape 2.

Next, in explaining the operation of the present invention based on the above configuration, a comparison will be made with the conventional apparatus shown in FIGS. 1A and 2.

When a flexible magnetic recording medium 1 placed on the top surface of a book table 2 is rotated at high speed via a belt 5 by a motor 6 as a driving source, the recording medium 1 is rotated through a through hole 2a formed in the table 2. In order to draw outside air from below the elongated hole 2b, the air flow is moved as the recording medium rotates ten times.

When the air flow generated in this manner collides with the recording head 4 corresponding to a plurality of tracks, the atmospheric pressure in the vicinity increases, causing a phenomenon in which the recording medium 1 is pushed up against the base of the recording head.

However, while the air at both left and right ends of the recording head base flows outward from the recording head base, the air at the center has difficulty flowing, and as a result, the air pressure at the center is lower than the air pressure at both ends. The air pressure increases and creates a void 9.

(See FIG. 2) Therefore, there was a difference in the gap between the recording medium 1 and the recording head base, and the center tended to be wider than both ends.

On the other hand, in the device of the present invention shown in FIG.
A transparent hole 11a having different diameters is located on the front side of the central part of 0,
11b... are bored in the table 2, so air generated by rotating the recording medium 1 at high speed passes through the through holes 11a, 11b... before reaching the recording head 10.
・Emitted to the outside from.

That is, the high air pressure generated above the central portion of the recording head 10 can be released to the outside, and a substantially uniform gap can be maintained over the entire surface of the recording head hammer.

Specifically, the air pressure changes by drilling through holes 11a, 11b, etc., which have a cross-sectional area commensurate with the level of air pressure generated, in the front table of the recording head 10 corresponding to multiple tracks. This makes it possible to achieve the above-mentioned effects.

In addition, as shown in FIG. 6, the through holes 1 have the same cross-sectional area.
1... may be bored in the table 2 in a number corresponding to the level of air pressure.The point is to equalize the gap across all heads for multiple tracks by adjusting the air pressure, so each of the above holes may be made. The present invention is not limited to the embodiments, and any form may be used as long as it achieves the above-mentioned objective.

As explained above, in the present invention, a flexible magnetic recording medium and a recording head corresponding to a plurality of tracks are provided facing each other, and the relative movement between the recording medium and the recording head generates an air flow to connect the recording medium and the recording head. This problem occurs when the recording medium rotates at high speed because a through hole for air pressure adjustment is located near the recording head and is bored in the chiffle in order to obtain a minute gap between the recording medium and the recording head. The air is discharged to the outside according to the size or quantity of the through holes, and this provides practical effects such as maintaining minute gaps substantially uniform over the entire surface of the recording head.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing a conventional magnetic recording device, and FIG. 2 is a front view showing a state in which the recording medium of the device is damaged during rotation.
FIG. 3 is a schematic perspective view of a magnetic recording device showing an embodiment of the present invention, FIG. 4 is a side view showing the state in which the recording medium of the device is rotating, and FIG. 5 is a front view thereof. FIG. 6 shows another embodiment of the present invention, and is a schematic plan view of the main part with the recording medium removed. 1... Magnetic recording medium, 10... Recording head, 2...
・Tiful, 11a, 11b, 11...Through hole.

Claims (1)

[Scope of utility model registration request] It has a table to which a flexible magnetic recording medium and a recording head corresponding to a plurality of tracks are integrally attached, and a minute gap is maintained between the recording medium and the recording head to record the recording medium. For devices that perform magnetic recording and reproducing, an air adjustment hole located in front of the recording head and having a high aperture ratio in the center is formed in the table, so that the air can be spread across each head of the recording head. A magnetic recording device characterized in that the gap between the recording medium and the recording medium can be made substantially uniform.