JPS6151616A - Magnetic head floating body - Google Patents

Abstract

PURPOSE:To attain high-density recording by placing a main part recording and reproducing of vertical magnetism of a head to a flowing end of air flow produced with a recording medium face. CONSTITUTION:The head 22 is placed on the air flowing end of a floating body 21 to keep stable floating attitude by checking the rail width and shape and processing a taper 23 at the flowing-out end. The head floating body 21 is floated with a distance (h) to a recording medium 24 running in a speed of (u) at the flowing-in end D and the flowing-out end E to attain recording and reproduction. Since a head pattern forming face C is exposed externally, wiring is attained wasily. Thus, this method is suited to high-density recording and a magnetic disc device with small size and large capacity is attained.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to floating bodies for magnetic transducers, and more particularly.

A perpendicular magnetic recording head with good recording and reproducing characteristics.

Regarding floating objects for floating.

[Background of the invention]

Various types of magnetic transducers that float relative to the magnetic recording medium have been devised so far, but in the longitudinal magnetic recording method, all of them are A converter (head) is located on the outflow end side of the converter. That is, as a typical example is shown in FIG. 1, the head portion 2 is formed on the air outflow end side of the head floating body 1. Symbol 3 indicates a gap portion for performing magnetic conversion, 4 is a floating surface, and 5 is an inflow end tapered portion. In the operating state as shown in FIG. 2, the floating head floats a certain distance from the recording medium 6, which travels (rotates) at a speed U, and performs recording and reproduction. The head floating body 1 also serves as a part of the herad core. In high-density recording, the magnetic field generated in areas other than the gap must be reduced as quickly as possible so that the magnetization recorded on the medium is not demagnetized by the strong magnetic field in the gap. Therefore, the thinner side (A side) of the head core with the steeper distribution of the generated magnetic field has a traili
The head (gap) is formed on the outflow end side so that the head finally passes through one point on the recording medium. In order to stably float in such a state, the floating body is processed by appropriately selecting the rail width W and the tapered portion 5.

Recently, a thin film head, the cross section of which is shown in FIG. 3, has been proposed as a head for high-density recording using the perpendicular magnetic recording method (Japanese Patent Application Laid-Open No. 71115/1983).

Such a head includes a substrate 11 and a main magnetic pole 12. which generates a steep magnetic field. It consists of a coil 13, an auxiliary magnet 1i14 that generates a broad magnetic field, and the like. Therefore, when such a head is positioned on the outflow end side and a floating body is implanted, the 0 side of the thin film head 15 is placed on the floating body 16 so that the main pole side (B side) becomes the trailing edge.
It was necessary to join it with the toga structure shown in Figure 4. However, magnetic poles, coils, etc. are formed on the zero surface, and it is actually very difficult to connect this surface to the floating body, especially the wiring for passing current through the coil.

[Purpose of the invention]

An object of the present invention is to provide a perpendicular magnetic recording head floating body suitable for high-density recording.

[Summary of the invention]

By locating the head on the air inflow end side of the floating body, problems in producing a head floating body were solved.

At this time, the stability of the floating posture is determined by considering the rail width and shape,
This can be ensured by taper machining on the outflow end side. In addition, the gimbal can be installed by changing its position so that the head part that performs recording and playback is closest to the recording medium, so if the present invention is implemented, there will be no practical obstacles. Does not occur.

[Embodiments of the invention]

FIG. 5 shows a cross section of the head floating body of the present invention.

Symbol 21 is a floating body, 22 is a head portion, and the 0 side of the head shown in FIG. 3 corresponds to the 0 side of 22. 23 is an outflow end tapered portion. In the operating state, as shown in FIG. 5, the head floating body floats at the inflow end and the outflow end E, keeping a certain distance from the recording medium 24 traveling (rotating) at a speed U to perform recording and reproduction. In this embodiment, the head pattern forming surface C for coils and the like is exposed to the outside, so wiring is easy. Also, using a 5'φ disk, 3
It was confirmed that when rotated at 600 rpm, it floats stably at h~0.2 μm.

〔Effect of the invention〕

According to the present invention, since a floating head for perpendicular magnetic recording can be easily obtained, a compact and large-capacity magnetic disk device becomes possible.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an example of a conventional head floating body, Figure 2 is a perspective view showing an example of a conventional head floating body;
The figure is a side sectional view to explain the operating principle, Figure 3 is a cross-sectional view showing an example of a thin film head for perpendicular magnetic recording, and Figure 4 is a thin film head for perpendicular magnetic recording attached to a conventional head floating body. FIG. 5 is a side sectional view showing an embodiment of the head floating body of the present invention. DESCRIPTION OF SYMBOLS 1... Head floating body, 2... Head part, 3... Gap part, 4... Floating surface, 5... Inflow end taper part,
6...Medium, 11...Substrate, 12...Main magnetic pole, 1
3... Coil, 14... Auxiliary magnetic pole, 15... Thin film head, 16... Head floating body, 21... Head floating body, 22... Head section. High 1 Figure t 3 Figure

Claims (1)

[Claims] 1. A floating body for supporting a head with respect to a moving recording medium, on the inflow end side of an air flow generated between the surface of the recording medium,
A magnetic head floating body characterized in that a main part for recording and reproducing the head is located therein. 2. The magnetic head floating body according to claim 1, wherein the head is for perpendicular magnetic recording.