JPH02132622A - Magnetic disk recorder - Google Patents

Abstract

PURPOSE:To simultaneously write signals in plural recording tracks by providing plural and independent magnetic gaps to a 1st leg part of a magnetic head having a groove provided between the 1st leg part and a 2nd leg part, along a radial direction of a magnetic disk. CONSTITUTION:Each of the upper and lower magnetic heads 2 and 3 is provided with the 1st leg part imbedded with plural magnetic core heads 7 and the 2nd leg part 12 having a wide width for stabilizing a wobble of the disk 1 and moreover the groove part 11 between these two leg parts 7 and 12. The magnetic cores 7a and 7b have their respective coil windows 13a and 13b, where coils 14a and 14b are wound. Then, the 1st magnetic gap 15 is formed in the middle part of the 1st magnetic core 7b, and the 2nd magnetic gap 16 is composed in the middle part of the 2nd magnetic core 7a. Thus, since plural and independent magnetic gaps 15 and 16 are provided along the radial direction of the disk 1, when the disk 1 is traveled, plural tracks are recorded at the same time with their respective information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk recording device, and particularly to a double-sided magnetic disk recording device suitable for recording and reproducing a magnetic recording medium having magnetic layers on both sides.

[Conventional technology]

Conventional examples of magnetic head devices are shown in FIGS. 4 and 5. Fourth
The figure is a schematic perspective view of one of the magnetic heads constituting the magnetic head device. The magnetic head 21 includes a core holder 22, a recording/reproducing core 23 and an erasing core 24 embedded in the core holder 22, and a recording/reproducing core 23 embedded in the core holder 22. It consists of a coil wound around. The core holder 22 is provided with a first leg portion 26 having a flat disk sliding surface 26a on the side in which the magnetic core 23.24 is embedded, and has a flat disk sliding surface 27a parallel to the first leg portion 26. A second leg 27 is provided and an air vent groove 28 is formed between the first and second legs 26,27.

The other magnetic head constituting the magnetic head device also has the same configuration as the magnetic head 21, and as shown in the schematic cross-sectional view of FIG.
6.27 respectively connect the second and first legs 27.2 of the other magnetic head 30 via the double-sided floppy disk 29.
It is arranged so as to face 6.

[Problem to be solved by the invention]

That is, in the conventional device shown in FIG.
and erase core 24 constitute one magnetic core, and this magnetic core sequentially writes information to each of the two recording tracks of a floppy disk (magnetic disk).

Therefore, this conventional device has the disadvantage that it takes time to write information to the magnetic disk.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic disk recording device that eliminates the drawbacks of the conventional devices described above, can simultaneously write signals to a plurality of recording tracks, and has excellent head contact.

[Means to solve the problem]

For the above purpose, the present invention provides a first double-sided magnetic disk recording device in which a flexible magnetic disk is sandwiched between magnetic beds from both sides and information is recorded and reproduced by rotating the magnetic disk. a leg portion, a second leg portion formed from a part of the core holder, the first leg portion and the second leg portion;
A plurality of independent magnetic gaps are provided along the radial direction of the magnetic disk in the first leg portion of the magnetic head, which has a groove provided between the first leg portion and the leg portion.

[Effect]

In the present invention, since a plurality of independent magnetic gaps are provided in the first m section of the magnetic head along the radial direction of the magnetic disk, signals can be written to a plurality of recording tracks simultaneously.

In addition, since the first leg faces the groove of the opposing magnetic head and the second leg prevents disk deformation, an appropriate pressing force can always be obtained.

〔Example〕

FIG. 1 is a perspective view of essential parts of a double-sided magnetic disk recording device according to an embodiment. A double-sided magnetic disk 1 rotating in the direction of arrow 6 is held between magnetic heads 2.3. A plurality of two or more magnetic core heads 7 are embedded in each magnetic head 2.3. Further, the magnetic head 2.3 is attached to upper and lower slider plates 4.5, and the upper slider plates 4 are attached to a support spring 8. As a result, the upper magnetic head 2 is pressed in a direction in which it comes into contact with the disk l. This pressing force is the support vi. The pressing force can be adjusted by a pressing force adjusting screw 10 via a pressing force 9.

The upper and lower slider plates 4 and 5 and the support plate 9 move in the radial direction of the disk 10 to simultaneously position the magnetic heads 2 and 3 on arbitrary plural tracks.

FIG. 2 is a sectional view taken along the line AA' in FIG. 1. The upper and lower magnetic heads 2 and 3 each have a first leg portion in which a plurality of magnetic core heads 7 are embedded, and a wide second leg portion 12 for stabilizing surface wobbling of the disk 1. Furthermore, a groove 1) between the two legs is provided. As shown in the figure,
Both magnetic heads 2 and 3 are combined so that the respective groove portions 1) of the upper and lower magnetic heads 2.3 and the first leg portions (which also serve as the magnetic core head 7 in this embodiment) face each other. In this configuration, when the disk 1 rotates, the magnetic head 2
．． Each of the grooves 1l of the disk 1 acts as an air pad, and the disk 1 is pressed against the plurality of upper and lower magnetic core heads 7.

FIG. 3 is a schematic perspective view of the magnetic head 2 or 3. The magnetic core head 7 is composed of a plurality of magnetic cores and a plurality of spacers, and in this embodiment, two magnetic cores 7a, 7
b and one spacer 7C are shown. The spacer 7C is for separating the magnetic fields of the magnetic cores 7a and 7b, and is made of the same material as the wide second leg portion 12. magnetic core 7a,
7b has winding windows 13a and 13b, respectively, and the coil 1
4a and 14b are wound. and the first magnetic core 7
b forms a first magnetic gap 15 in its center,
The second magnetic core 7a defines a second magnetic gap 16 at its center.

In this manner, a plurality of independent magnetic gaps 15, . 16, so disk 1
When running, information can be recorded on multiple tracks within the same time, and in particular, when recording servo signals and format signals, processing can be done in a short time.

〔Effect of the invention〕

As described above, according to the present invention, information such as servo signals and format signals can be simultaneously recorded on a plurality of tracks, and information can be recorded at high speed.

In addition, the first leg made of a plurality of magnetic cores faces the groove of the opposing magnetic head, and the second leg prevents disk deformation, so the pressing force of the magnetic head on the magnetic disk is weak. Even in such a case, an appropriate pressing force can be obtained, and a plurality of magnetic cores can be pressed against the disk at the same time.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a magnetic disk recording device according to the present invention;
2 is a sectional view taken along the line A-A' in FIG. 1, FIG. 3 is a schematic perspective view of a magnetic head according to an embodiment of the present invention, and FIG. FIG. 5 is a sectional view thereof. ■． ．． ．． Magnetic disk, 2, 3...Magnetic head, 7.
...Magnetic core head (first part 1), l1...groove, 12...second leg, 15.16...magnetic gap. Figure 1 Figure 2 μ10a 17+D

Claims (2)

[Claims] (1) In a double-sided magnetic disk recording device in which a flexible magnetic disk is sandwiched between magnetic heads from both sides and information is recorded and reproduced by rotating the magnetic disk,
The first leg of the magnetic head has a first leg, a second leg formed from a part of the core holder, and a groove provided between the first leg and the second leg. 1. A magnetic disk recording device, characterized in that one leg is provided with a plurality of independent magnetic gaps along the radial direction of the magnetic disk. (2) With the first magnetic head and the second magnetic head facing each other via the magnetic disk, the first leg of the first magnetic head is in contact with the groove of the second magnetic head and the second magnetic head is in contact with the groove of the second magnetic head. 2. The magnetic disk recording device according to claim 1, wherein the first leg portions of the two magnetic heads are arranged to face the groove portions of the first magnetic head.