KR890006643Y1 - Head for floppy disk driver - Google Patents

Abstract

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Description

Head for vertical recording / playback of floppy disk driver

Fig. 1 (a) and Fig. 1 (b) are explanatory diagrams showing a conventional head and a head body. Fig. 1 (a) is an explanatory diagram showing a conventional head configuration. Fig. 1 (b) is a conventional head. Bottom view of the head body.

2 is an explanatory diagram showing a state in which a data signal is recorded on a floppy disk by a conventional head.

3 (a) is an explanatory view showing the head and the head body according to the present invention, 3 (a) is a front view showing the head configuration of the present invention, 3 (b) is a head body composed of the head of the present invention Bottom view of.

4 is an explanatory diagram showing a state in which a data signal is recorded on a floppy disk as a head of the present invention.

* Explanation of symbols for main parts of the drawings

11: ferrite core 22: intermediate vertical portion

3, 13 ': Both sides vertical 14, 16: Inclined

17: vertical portion 18: magnetic material

19: ceramic

The present invention relates to a head body of a floppy disk driver used as an auxiliary storage device of a computer, and more particularly to a head body for vertical recording / reproducing of a floppy disk driver which enables data signals to be recorded and reproduced vertically on a floppy disk. .

The head used in the conventional floppy disk driver forms a predetermined cap (2) on the bottom surface of the ferrite core (1) having a substantially rectangular shape as shown in FIG. 1 (a), and faces each other at a portion where the gap (2) is formed. And a pair of electrodes (3) and (3 ') are wound to form a pair, and the coil (4) is wound around the ferrite core (1), and the head is thus shown in FIG. Likewise, one is placed in front and operated as the recording / reproducing head 1a, and one is placed in the rear of both sides of the head 1a, respectively, and operated as the erasing heads 1b and 1c, respectively. The head body was manufactured by integrally molding with the ceramic 5 so that the electrodes 3 and 3 'of 1b) and 1c may be exposed to the bottom face.

Therefore, as shown in FIG. 2, the ferrite core of the recording / reproducing head 1a when the head tracks on the track 6b of the floppy disk 6 having a permalloy layer formed on the disc 6a. When a data signal is applied to the coil 4 wound around 1), a magnetic field is generated in the nose 1, and the core 1 and the track 6b form a magnetic closure circuit so that the magnetic field of the applied data signal is track 6b. ), The erase heads 1b and 1c also generate a constant magnetic field, and the magnetic field recorded on the track 6b exists only within a certain width, and has no effect on adjacent tracks on both sides. This eliminates the magnetic fields recorded on both sides of the track 6b.

When the head 1b deviates from the track 6b in which the magnetic field is recorded, the core 1 and the track 6b form a magnetic closed circuit by applying the induced voltage to the coil 4 by the recorded magnetic field. As a result, the data signal recorded at the induced voltage is reproduced.

However, such a conventional head can be recorded on a floppy disk because data signals are horizontally memorized in a track of a floppy disk and occupy a large area. However, the amount of other signals is not large and the gap gap must be maintained accurately. Therefore, there is a defect in that the contrast is not easy, and the processing speed of the data signal, that is, the recording and reproducing speed of the data signal is slow, and the magnetic field strength of the data signal to be recorded is weak, resulting in high error rate.

Further, according to Japanese Patent Laid-Open Publication No. 59-229716, an electromagnetic coil is provided at the center angle of a core made of a magnetic body having a center angle and a side angle, and an end portion which forms a high part and a low part is provided at this center angle. The main magnetic pole excitation type vertical magnetic device, which is fixed on the core, is made of a nonmagnetic material, and extends the magnetic thin film made of the main play to the lower part of the central angle to widen the junction between the magnetic thin film and the core. Magnetic heads for locks are known.

However, in such a conventional magnetic head for vertical magnetic recording, there is a limit to connecting the magnetic field generated in the core, and the contact area between the magnetic thin film and the center angle which becomes the main magnetic pole is not so wide, Since the two non-magnetic bodies fixedly attached are formed differently in New Year, not only the manufacturing process is complicated, but also the structure thereof is complicated.

Therefore, an object of the present invention is to record and play back data signals on a track of a floppy disk vertically without recording and playing them horizontally, thereby narrowing the area occupied by each data signal, thereby recording and playing more data signals on a floppy disk. This, of course, speeds up the processing of data signals.

Another object of the present invention is to securely connect the magnetic field generated in the core, and to greatly improve the contact area between the middle vertical portion of the core and the ferromagnetic material of the ceramic, and to fix the left and right nonmagnetic ceramics fixed on the core. It is to simplify the manufacturing process and structure thereof by the same shape and the same size.

The purpose of the present invention is to provide a ferrite core It is formed into a shape, and the lower portion of the middle vertical portion of the core forms a sharply inclined portion, and the ferromagnetic material sputtered in contact with the inclined portion forms a very narrow electrode. This can be achieved by forming electrodes, respectively.

Hereinafter, the configuration and operation effects of the present invention will be described in detail with reference to FIGS. 3 (a), 3 (b) and 4 as follows.

In FIG. 3 (a), reference numeral 11 has an intermediate vertical portion 12 and both vertical portions 13 and 13 '. The ferrite core is shown in the figure. The intermediate vertical portion 12 of the ferrite core 11 is slightly shorter than both vertical portions 13 and 13 ', and the inclined portions are formed on both lower sides of the intermediate vertical portion 12. 14 to form a sharpened and wound coil 15, the inclined portion 16 and the vertical portion 17 having the same slope as the inclined portion 14 on one side to form the inclined portion 16 And the ceramic 19 sputtered with the ferromagnetic material 18 on the vertical portion 17, and the intermediate and both vertical portions 12, (so that the ferromagnetic material 18 of the inclined portion 16 is in contact with the inclined portion 14). 13) and 13 'to form the electrode 20, while the one such head is positioned forward one as shown in FIG. Also, each of them is positioned at the rear of both sides of the head 11a, respectively, and operated by the erasing heads 11b and 11c. Bottom electrode (21 ') The head body is formed by integrally molding the heads 11a, 11b and 11c with the ceramic 22 so that the 21 'is exposed to the bottom surface.

According to the present invention configured as described above, an electrode 20 is formed to be extremely narrow under the middle vertical portion 12 of the core 11, and a wide electrode 21 (below the both vertical portions 13 and 13 ′). 21 '), a pulmalloy layer 23b is formed on the upper plate 23a as shown in FIG. 4, and a track 23c is formed on the upper portion of the cobalt chromium (co-cr) layer. When a data signal is applied to the coil 15 when tracking a floppy disk 23, a magnetic field is generated in the core 11 while the electrode 20, the track 23c, the permalloy layer 26b, and the track 23c. As the magnetic closing circuit is formed by the two electrodes 21 and 21 ′, a very narrow electrode 20 has a very strong N pole or S pole according to the applied data signal. The magnetic field is also recorded very strongly vertically in the track 23C positioned at the magnetic field, and the magnetic field is also recorded vertically in the track 23C below the both electrodes 21 and 21 '. 21 ') has a large area so that the magnetic field is very weak, so that the magnetic field on which the data signal is recorded by the electrode 20 has no effect.

In this way, when the recording / reproducing head 11a tracks the magnetic field, which is a data signal, perpendicularly to the track 23c, the magnetic field is generated by the erasing heads 11b and 11c. Leaving only the width, the outer magnetic field is erased so that the magnetic field recorded in the adjacent track 23c has no effect.

When the recorded data signal is reproduced, if the electrode 20 is positioned above the track 23c on which the magnetic field is recorded, the electrode 20, the track 23c, the permalloy layer 23b, A magnetic closure circuit is formed from the track 23c and the electrodes 21 and 21 ', and an induced voltage is generated in the coil 15 by the recorded magnetic field, and the data signal is reproduced by the induced voltage.

Meanwhile, in the above, the electrode 20 is formed by sputtering the magnetic body 18 on the inclined portion 16 and the vertical portion 17 of the two ceramics 19, but the magnetic body 18 is formed on only one ceramic 19. The electrode 20 may be formed by sputtering. When the electrode 20 is formed only in one ceramic 19 as described above, the width thereof becomes narrower to record the data signal more closely to the floppy disk 23. There are many benefits to doing so.

As described above, the present invention records and reproduces a large amount of data signals on a floppy disk by vertically recording and reproducing the data signals on a floppy disk, and also has a large contact area between the intermediate vertical portion of the core and the ferromagnetic material, Since the magnetic field generated in the core can be focused and concentrated, the interval between recorded data signals is so close that the processing speed of the data signals is very fast, and the magnetic field strength of the recorded data signals is very strong, resulting in very small error occurrence rate. There is no need to form a gap that requires precision as in the prior art, and since the left and right ceramics of the bar magnetic body fixedly attached to the core are formed in the same shape and the same size, the production thereof is easy and the structure is simplified. .

Claims (1)

In the head in which the intermediate vertical portion 12 and the both vertical portions 13 and 13 'are formed on the fate core 11 and the coil 15 is wound around the intermediate vertical portion 12, The intermediate vertical portion 12 is formed to be shorter than the two vertical portions 13 and 13 ', and the inclined portion 14 is formed on both lower sides thereof, and the inclined portion 14 is formed on the ceramic 19 which is a magnetic material. And the inclined portion 16 and the vertical portion 17 having the same inclination degree, and sputtering the magnetic body 18 thereon, and the ceramic 19 is formed in the intermediate vertical portion 12 and both vertical portions 13. A head body for vertical recording / playback of a floppy disk driver, characterized in that the head is formed between the 13's.