JPH0355134Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a magnetic head device used in a magnetic recording/reproducing device.
The present invention relates to a rotary magnetic head device that can rotate once and change the upper and lower channels of opposing magnetic tapes.

[Conventional technology]

A rotary magnetic head device that can rotate 180 degrees facing a magnetic tape and change the upper and lower channels of the opposing magnetic tape is effective for tape recorders that perform auto-reverse operation. FIG. 2 shows a conventional rotary magnetic head device used in a 4-track, 2-channel tape recorder. This rotary head device has two recording and reproducing heads 21 and 22 for left and right channels as recording and reproducing heads, and an erasing head 23 provided adjacent to and corresponding to these recording and reproducing heads 21 and 22. head 21-2
3 is integrally attached to the rotating body 24.
Further, a tape guide 25 is disposed adjacent to the recording and reproducing heads 21 and 22 and on the opposite side from the erasing head 23, and a magnetic tape 26 is guided by this, and the magnetic tape 26 is guided by the tape guide 25. It is designed to move while sliding in contact with the surface.
Also, in the illustrated position, the recording/playback head 2
1 and 22 and the erasing head 23 are connected to the magnetic tape 2.
The recording/playback head 21, 22 and erasing head 23 are rotated 180 degrees together with the rotating body 24, so that recording/playback is performed on the lower channel. The recording and reproducing heads 21 and 22 and the erasing head 23 face the upper recording and reproducing channel of the magnetic tape 26, and are capable of recording and reproducing information on this upper channel. Such a rotary magnetic head device is used especially when a recording/playback operation is completed to the end of one channel of the magnetic tape 26 for auto-reverse operation.
This is a magnetic head device that is effective for rotating 180 degrees and continuously recording and playing back to the other channel.

[Problem that the invention attempts to solve]

By the way, when dubbing a magnetic tape in a tape recorder having a conventional rotary magnetic head device as shown in FIG. Since they are provided facing each other only on the channel side, it is necessary to perform two separate dubbing operations for the upper and lower channels of the magnetic tape 26, resulting in a problem that dubbing takes a long time.

An object of the present invention is to provide a magnetic head device that can shorten the dubbing operation of a magnetic tape when used in a tape recorder.

[Means for solving problems]

In order to solve the above problems, the magnetic head device of the present invention is a magnetic head device used in a tape recorder that performs recording and playback by dividing a magnetic tape into a plurality of channels symmetrically in the width direction. a recording/playback head provided in the recording/playback head, an individual erasing head provided corresponding to one of the recording/playback heads corresponding to one of the symmetrically provided channels, and each of the recording/playback heads and the individual erasing head integrally formed. a first position in which the individual erase head and one record/playback head face one channel and the other record/playback head faces the other channel; a rotary body for rotating each recording/playback head and an individual erase head so that the other recording/playback head can be set in a second position opposite to one channel; A wide erase head is provided at a position facing the magnetic tape and extending in the width direction of the magnetic tape so as to cover all channels of the magnetic tape.

[Effect]

The magnetic head device according to the present invention has a recording/reproducing head provided for each channel and a wide erasing head extending in the width direction of the magnetic tape so as to cover all channels of the magnetic tape. It is now possible to dub recorded signals at the same time, and since an individual erasing head is provided for one channel, the individual erasing track and the corresponding recording/playback head can be used to Not only can recording and playback operations be performed separately for each channel, but also an auto-reverse operation can be performed by rotating the recording and playback head and the individual erasing head by 180 degrees using a rotating body.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a magnetic head device according to an embodiment of the present invention. The magnetic head device shown in the figure is used in a 4-track, 2-channel tape recorder, and has four recording/playback heads 2, 3, 4, 5 are provided respectively. Recording and playback heads 2 and 3 for the lower channel provided on the lower side constitute the left and right stereo channels, respectively, and recording and playback heads 4 and 5 for the upper channel provided on the upper side similarly configure the left and right channels. It consists of The recording and playback heads 2 and 3 for the lower channel have an erasing head 6, that is, an individual erasing head 6, adjacent to the magnetic tape 1 in the longitudinal direction.
is arranged, and this individual erasing head 6 faces the lower channel together with the recording and reproducing heads 2 and 3.

The recording/reproducing heads 2, 3, 4, 5 and the individual erasing head 6 are integrally attached to a rotating body 7. The rotating body 7 has its center of rotation located at the center in the width direction of the magnetic tape 1, and is configured to be able to rotate 180 degrees about this center of rotation by a mechanism not shown. As a result, the rotating body 7 is moved to a first position, as shown, in which the recording/playback heads 2, 3 and the individual erasing heads 6 face the lower channel, and the recording/playback heads 4, 5 face the upper channel; From the first position, the rotating body 7 rotates 180 degrees to a second position in which the recording/playback heads 2, 3 and the individual erasing heads 6 face the upper channel, and the recording/playback heads 4, 5 face the lower channel. This makes it possible to obtain a rotary magnetic head device. The configuration of this rotary magnetic head device is suitable for auto-reverse operation. That is, in the auto-reverse operation, after the recording/reproducing operation is completed for one channel of the magnetic tape 1, for example, the lower channel, by the recording/reproducing heads 2, 3 and the individual erasing head 6, the magnetic tape 1 is
By rotating the rotating body 7 by 180 degrees at the end of the channel, the upper channel can be continuously recorded and reproduced by the recording/reproducing heads 2, 3 and the individual erasing head 6.

Also, adjacent to the recording/playback heads 2, 3, 4, 5, and on the opposite side from the individual erasing head 6, there is a tape guide 8.
is provided to guide the running of the magnetic tape 1.

A magnetic tape 1 is placed on both sides of the rotating body 7.
Wide erasing heads 9 and 10 extending in the width direction of the magnetic tape 1 are provided facing the magnetic tape 1, respectively.
The wide erasing heads 9, 10 extend almost the entire width of the magnetic tape 1 so as to cover at least four tracks and erase the four tracks simultaneously.

In the magnetic head device configured as described above, normal recording and playback operations can be performed for each upper and lower channel using the recording and playback heads 2 and 3 and the individual erasing head 6, and in this case, the above-mentioned Auto-reverse operation can also be performed by rotating the rotating body 7 by 180 degrees as described above.

Further, by using the four recording/reproducing heads 2, 3, 4, 5 and the wide erasing head 9 or 10, dubbing operations can be performed simultaneously on the upper and lower channels in a short time, that is, in half the time required in the conventional system. In this case, since the wide erasing heads 9 and 10 are provided on both sides of the recording and reproducing heads 2 to 5, dubbing can be performed even when the magnetic tape 1 is running in either the forward or reverse direction. ing.

That is, by using the recording/reproducing heads 2 to 5 and the wide erasing head 9, it is possible to simultaneously dub four tracks of the upper and lower channels while running the magnetic tape 1 to the left in the figure.
Furthermore, by using the recording and reproducing heads 2 to 5 and the wide erasing head 10, it is possible to simultaneously dub four tracks while running the magnetic tape 1 in the right direction.

Note that the wide erase head can be of either a current type or a permanent magnet type, but if a permanent magnet is used, such as a multi-pole magnet, it will not work under normal conditions. may be configured to be moved backward away from the magnetic tape 1 and come out at a predetermined position where it comes into contact with the magnetic tape 1 only during dubbing.

Further, in the above embodiment, the wide erasing head is disposed on both sides of the rotating body, but the invention is not limited to this, and the wide erasing head may be disposed only on one side of the rotating body. This means that dubbing can be performed only when the magnetic tape runs in the direction in which the wide erasing head is provided, but it is possible to dub all tracks at the same time.

Further, in the above embodiment, the case of 4 tracks and 2 channels has been described, but the present invention is not limited to this. Each track and channel are provided symmetrically in the width direction of the magnetic tape, and one symmetrical track and the other channel are provided symmetrically in the width direction of the magnetic tape. It is also applicable to a plurality of other configurations, such as 8 tracks and 4 channels, as long as the 1 and 2 are interchangeable by rotating the rotating body.

[Effect of idea]

As explained above, according to the present invention, a recording/reproducing head is provided for each channel of the magnetic tape, and a wide erasing head extending in the width direction of the magnetic tape is provided to cover all channels of the magnetic tape. Since the recording/playback head and the wide erase head are used, all channels can be dubbed simultaneously, and the dubbing time can be reduced to half of the conventional time. In addition, an individual erasing head is provided corresponding to one of the recording/playback heads, and each of these heads is attached to a rotating body and can be rotated 180 degrees to correspond to either channel. In addition to being able to perform normal recording and playback operations for each channel, it is also possible to perform auto-reverse operations.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a magnetic head device showing an embodiment of the present invention, and FIG. 2 is a plan view of a conventional magnetic head device. In the figure, 1...magnetic tape, 2, 3, 4,
5...Recording/playback head, 6...Individual erasing head,
7...Rotating body, 9, 10... Wide erasing head.

Claims (1)

[Claims for Utility Model Registration] (1) In a magnetic head device used in a tape recorder that divides a magnetic tape into a plurality of channels symmetrically in the width direction and performs recording and playback, a recording and playback head provided for each channel. and an individual erasing head provided corresponding to one recording/playback head corresponding to one of the symmetrically provided channels, and each recording/playback head and individual erasing head are integrally attached, and the individual erasing head a first position in which the head and one record/playback head face one channel and the other record/playback head face the other channel; a rotating body for rotating each recording/playback head and an individual erasing head so that the recording/playback head can be set at a second position opposite to one channel; and a wide erasing head extending in the width direction of the magnetic tape so as to cover all channels of the magnetic tape. (2) The magnetic head device according to claim 1, wherein the wide erasing head is disposed on both sides of a rotating body. (3) The plurality of channels are composed of two channels, each channel is composed of two tracks for left and right channels, and each recording and playback head is composed of two recording and playback heads for left and right channels. A magnetic head device according to claim 1 or 2 of the claimed utility model.