JPH03288353A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To facilitate the control of a magnetic head to a magnetic tape and to execute recording and reproducing with high accuracy by regulating the travel of the magnetic tape so that the magnetic surface side of the magnetic tape can be projecting shape or a plane shape. CONSTITUTION:The travel of a magnetic tape 100 is regulated by a guide 2 so that the magnetic surface side of the magnetic tape 100 can be the projecting shape or the plane shape. At an interval to this guide 1, the magnetic tape 100 is interposed and a magnetic head 1 is provided to be faced to the guide 2. Then, information is recorded and reproduced to the magnetic tape 100 by the magnetic head 1. Thus, since the traveling path of the magnetic tape 100 is decided independent of the magnetic head 1 and the degree of freedom for the magnetic head 1 is enlarged, the magnetic head 1 can be easily controlled to the magnetic tape 100 and recording and reproducing can be executed with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing apparatus, and particularly to a magnetic recording/reproducing apparatus that records or reproduces information using a magnetic tape.

[Prior Art] Conventionally, magnetic recording and reproducing apparatuses that record or reproduce information using magnetic tapes are becoming increasingly high in recording density and reliable. In order to increase recording density, it is necessary to shorten the recording wavelength and achieve high track density. In order to achieve higher recording densities, the development of conventional narrow gap magnetic heads, thin film magnetic heads, and high performance tape running systems has been promoted. In addition, for high track density,
Development of narrow track width heads and tracking technology is progressing. 2. Description of the Related Art Conventionally, a data streamer for backing up information device data has been known as an example of a magnetic recording/reproducing device.

FIG. 4 is a perspective view showing a magnetic head portion of a conventional magnetic recording/reproducing device used in a data streamer or the like.

Referring to FIG. 4, a magnetic head 1 used in a conventional magnetic recording/reproducing apparatus has a recording/reproducing surface longer in length than the width of a magnetic tape 100. As shown in FIG. The magnetic tape 100 is then pressed against this information recording/reproducing surface to record or reproduce information.

FIG. 5 is a plan view of the magnetic head portion shown in FIG. 4. The operation will be explained with reference to FIGS. 4 and 5. Magnetic tape 100 is supplied from a tape supply reel (not shown) and transferred to a tape take-up reel (not shown). A magnetic head 1 is disposed during the transfer of the magnetic tape 1.
Perform magnetic recording/reproduction to 00. Here, magnetic tape 1
00 are wound around the magnetic head 1 at an angle θ, and are in contact or almost in contact with each other at this portion, and recording and reproduction are performed by magnetic interaction.

That is, the magnetic tape 100 runs with its magnetic surface side concave near the magnetic head 1, and its running path is regulated by the magnetic head 1.

[Problems to be Solved by the Invention] As described above, in the conventional magnetic recording/reproducing device, the magnetic head 1 has a recording/reproducing surface longer than the width direction of the magnetic tape 100. Information was recorded and reproduced by running it so that the magnetic surface side was concave. However, in this conventional method, the magnetic head 1
Because of the large size, it was difficult to improve the processing accuracy of the magnetic head 1, and it was also difficult to reduce the size of the device. By the way, making the length of the magnetic recording/reproducing surface of the magnetic head 1 longer than the width of the magnetic tape 100 is because the magnetic head 1 also performs the running regulating function of the magnetic tape 100. It is necessary to prevent the entire width of the magnetic tape 100 from protruding from the magnetic head 1 when the magnetic tape 100 is moved the most in the direction, and from this point of view, there is a problem that the length of the magnetic recording/reproducing surface of the magnetic head 1 cannot be shortened. As a result, in addition to difficulties in improving processing accuracy and downsizing the device, there is also the problem that the weight of the magnetic head 1 is large.
This also poses a problem in controlling the movement of the zero in the width direction.

Conventionally, the contact state of the magnetic head 1 with the magnetic tape 100 has been controlled by controlling the winding angle of the magnetic head 1 of the magnetic tape 100 and the tension of the magnetic tape 1. As a result, in the past, it was necessary to control the tape tension of the magnetic tape 100 with high precision, resulting in a problem that the control became complicated.

In other words, in the past, since the magnetic head also had the function of regulating the running of the magnetic tape, it was subject to various restrictions such as difficulty in controlling the magnetic head relative to the magnetic tape. It was difficult to do.

The present invention was made in order to solve the above-mentioned problems, and an object of the present invention is to provide a magnetic recording and reproducing device that can easily control a magnetic head for a magnetic tape and perform highly accurate magnetic recording and reproducing. purpose.

[Means for Solving the Problems] A magnetic recording and reproducing apparatus according to the present invention is a magnetic recording and reproducing apparatus that records or reproduces information using a magnetic tape, and the magnetic recording and reproducing apparatus records or reproduces information using a magnetic tape. A magnetic tape is interposed between the running regulating means and the running regulating means for regulating the running of the magnetic tape, and the magnetic tape is provided opposite to the running regulating means, and information is transmitted to the magnetic tape. and a magnetic head for recording or reproducing information.

[Function] In the magnetic recording and reproducing device according to the present invention, the running of the magnetic tape is regulated by the running regulating means so that the magnetic surface side of the magnetic tape is convex or flat, and the magnetic tape is interposed between the running regulating means and the magnetic tape. A magnetic head is provided interposed therebetween and facing the running regulating means, and the magnetic head records or reproduces information on the magnetic tape.
The travel path of the magnetic tape is determined independently of the magnetic head, increasing the degree of freedom of the magnetic head.

Embodiment of the Invention FIG. 1 is a perspective view showing the vicinity of a magnetic head of a magnetic recording/reproducing apparatus according to an embodiment of the invention. Referring to FIG. 1, the magnetic recording and reproducing apparatus is provided between a guide 2 for regulating the running of a magnetic tape 100 and the guide 2, facing the guide 2 with a magnetic tape 1o○ interposed therebetween; A magnetic head 1 for recording or reproducing information on a magnetic tape 100, and a magnetic head support 3 for keeping the magnetic head 1 in contact with the magnetic tape 100 with a constant force.
including. The magnetic head 1 has a magnetic recording/reproducing surface shorter than the width of the magnetic tape 100, and is configured to move in the width direction of the magnetic tape 100 during recording or reproduction. Further, the magnetic surface of the magnetic tape 100 is configured to have a convex shape with respect to the magnetic head 1, unlike conventional magnetic tapes.

As described above, in this embodiment, the running path of the magnetic tape 100 is regulated by the guide 2, and the magnetic head 1 is configured so that the magnetic surface side of the magnetic tape 100 is convex. It is not necessary to wrap the magnetic tape 100 around the magnetic head 1 as in the conventional case, and the width of the magnetic head 1 can be made smaller than the width of the magnetic tape 100.

As a result, it is possible to improve the machining accuracy of the magnetic head 1 and to downsize the device. Furthermore, by reducing the weight of the magnetic head 1, the movement of the magnetic head 1 in the width direction of the magnetic tape 100 can be easily controlled. Further, the travel path of the magnetic tape 100 is regulated by the guide 2, and the contact (or proximity) state between the magnetic head 1 and the magnetic tape 100 is controlled separately from tape tension control. In other words, even if the tape tension control is less accurate than conventional tape tension control, it is sufficient as long as the winding of the magnetic tape 100 around the guide 2 is stable, and the contact state between the magnetic head 1 and the magnetic tape 100 can be controlled by the control of the magnetic head 1. This can be done by applying a pressing force to the magnetic tape 100 separately from the tape tension.

FIG. 2 is a schematic diagram for explaining a recording and reproducing method using the magnetic recording and reproducing apparatus shown in FIG.

The operation will be explained with reference to FIGS. 1 and 2. First, the magnetic tape 100 is pulled out from a tape supply reel (not shown) and wound onto a tape take-up reel (not shown). Information is recorded on or reproduced from the magnetic tape 100 by a magnetic head 1 installed between these reels. The magnetic head 1 has a magnetic tape 100
It is movable in the width direction (in the direction of arrow B), and can be moved, for example, to positions P-1 to P, (P, an integer where al is an integer). Here, at the head position P, the magnetic head 1 records the magnetic tape 1.
n or more recording and reproducing sections are provided so that recording and reproducing can be performed on n recording tracks 12 of 00 (n is an integer equal to 1). When the magnetic head 1 is at an arbitrary position, the magnetic head 1 does not need to be in contact with or close to all of the recording tracks 12 on the magnetic tape 100, but must be wide enough to interact with at least n recording tracks 12. It would be good if there was. To record and reproduce information on the magnetic tape 100, move the magnetic head 1 to head position P-.
All the recording tracks (t-1 to trm) 12 are moved over n recording tracks 12 on the magnetic head 1 by repeatedly recording and reproducing the n recording tracks 12 on the magnetic head 1.
can be recorded and played back. In addition, the magnetic head 1
The distance between each head position does not have to be constant,
For example, in P-1 to m, the movement is performed by a distance equal to the width of the recording track 12, and in P-m-m+1, the movement is performed by m x (n-1) times the width of the recording track 12. Good too.

As described above, in this embodiment, since the travel path of the magnetic tape 100 is determined independently of the magnetic head 1, there is no need to wrap the magnetic tape 100 around the magnetic head 1.
The degree of freedom of the magnetic head 1 can be expanded. As a result, the width of the magnetic head 1 in the width direction of the magnetic tape 100 can be freely determined, and by using the magnetic head 1 narrower than the width of the magnetic tape 100, it is lightweight and can be used in the width direction of the magnetic tape 100. It is possible to improve the control performance of the movement of. In addition, since the magnetic head 1 only needs to have a small shape, it can be manufactured with higher precision than in the past, and the number of magnetic heads 1 that can be manufactured from the same amount of material can be increased, resulting in lower costs. But it will be advantageous. Furthermore, the entire magnetic surface side of the magnetic tape 100 is not always in contact with the magnetic head 1, but only the recording track 12 on which recording/reproduction is being performed and the vicinity thereof is in contact with the magnetic head 1, so that damage to the magnetic tape 100 can be minimized. Therefore, the life of the magnetic tape 100 can be improved. In this way, this embodiment can provide a magnetic recording and reproducing device that is excellent in terms of performance and cost.

FIG. 3 is a perspective view showing the vicinity of a magnetic head of a magnetic recording/reproducing apparatus showing another embodiment of the present invention. Referring to FIG. 3, in this embodiment, the shape of the guide 2 near the magnetic head 1 is a planar shape. Even with this configuration, the same effects as the embodiment shown in FIG. 1 can be obtained.

[Effects of the Invention] As described above, according to the present invention, the running of the magnetic tape is restricted by the running regulating means so that the magnetic surface side of the magnetic tape becomes convex or flat, and there is no space between the running regulating means and the magnetic tape. By interposing a magnetic tape and providing a magnetic head opposite the running regulating means, and recording or reproducing information on the magnetic tape with the magnetic head, the running path of the magnetic tape can be changed without depending on the magnetic head. Since the degree of freedom of the magnetic head is increased, the magnetic head can be easily controlled with respect to the magnetic tape, and highly accurate magnetic recording and reproduction can be performed.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view showing the peripheral portion of a magnetic head of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of the magnetic recording/reproducing apparatus shown in FIG. 1. A schematic diagram for explaining the recording and reproducing method, FIG. 3 is a perspective view showing the peripheral part of the magnetic head of a magnetic recording and reproducing apparatus showing another embodiment of the present invention,
FIG. 4 is a perspective view showing a magnetic head portion of a conventional magnetic recording/reproducing device used in a data streamer, etc., and FIG. 5 is a plan view of the magnetic head portion shown in FIG. 4. In the figure, 1 is a magnetic head, 2 is a guide, 3 is a magnetic head support, 11 is a magnetic recording/reproducing section, 12 is a recording track, and 100 is a magnetic tape. Note that in each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A magnetic recording/reproducing device for recording or reproducing information using a magnetic tape, wherein the magnetic tape is run so that the magnetic surface side of the magnetic tape is convex or flat. interposing the magnetic tape between a travel regulating means for regulating and the traveling regulating means;
A magnetic recording/reproducing device, further comprising: a magnetic head provided opposite to the running regulating means for recording or reproducing information on the magnetic tape.