JPH02168460A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent abnormal running of a tape at reversing of a magnetic tape by setting a distance between a limiter post and a capstan device to be 2.5 - 3.5 times the width of the magnetic tape. CONSTITUTION:When the magnetic tape 6 is driven forward, the position restriction of the tape with respect to heads 9, 10 is implemented by a limiter post 12. Even if the magnetic tape supply from a winding reel 3 to a capstan device 11 is somewhat twisted or implemented with an uneven supply height at the reversing drive, the tape abnormal running in the vicinity of a control signal recording and reproducing head 10 is prevented by setting the distance l between the capstan device 11 and the limiter post 12 to be 2.5 - 3.5 times the width of the magnetic tape 6 and then a damaged tape is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic tape running device for a rotary head type magnetic recording/reproducing device, and more particularly to a magnetic head for recording and reproducing control signals on a magnetic tape, and a magnetic tape running device for recording and reproducing control signals on a magnetic tape. a capstan device that reversibly drives the
Position 1 between the magnetic head and the capstan device.
The present invention has a limiter post that is easy to use, and is characterized by setting the distance between the limiter post and the capstan device.

2. Description of the Related Art A tape running system of a conventional rotary head type magnetic recording/reproducing apparatus (VTR) has the configuration shown in FIG. In other words, in Figure 2, 1 is supply! J-A/2 and take-up Lee/L/
A tape cassette containing 3 and 4a.

ab, 5a, and esb are tape pull-out pins for pulling out the magnetic tape 6 from the tape cassette 1 and winding it around the rotary head cylinder 7; 8 is an erasing head; 9 is an audio erasing head; 10 is a head for recording and reproducing control signals; 11 is a capstan device, and 12 and 13 are limiter posts that respectively regulate the running height position of the tape. Note that 16 is an impedance roller and 17 is a tension control post.

That is, during recording and reproduction, the supplied magnetic tape is wound around the rotating head cylinder 7 by the tape pull-out pins 4a, 4b, 5a, and 5b, and is wound in either the forward or reverse direction by the capstan device 11. The tape is also reversibly driven to run the tape.

Problems to be Solved by the Invention However, in the above conventional configuration, the limiter post 12
When the magnetic tape is run in reverse because the distance between the capstan device 11 and the capstan device 11 is short, the supply height of the magnetic tape entering the capstan device from winding-A/3 to the capstan device is It is necessary to keep the limiter post 13 constant, and the accuracy of the fall of the limiter post 13 must be kept constant.

Due to variations in height adjustment, the tape may be damaged by the limiter post 13.

The present invention aims to alleviate and eliminate such conventional problems.

Means for Solving the Problems In the magnetic recording/reproducing apparatus of the present invention, the distance between the limiter post 12 provided near the control recording/reproducing head and the capstan device is set to 2.5 to 3.6 times the tape width. However, the limiter post 13 between the capstan device and the tape cassette is omitted.

According to the above configuration, since the limiter post between the capstan device and the tape cassette is eliminated, damage to the tape can be eliminated, and the limiter post between the control signal recording/reproducing head and the capstan device is eliminated. The distance from the capstan device between the limiter posts placed in Since twisting is absorbed by the tape's own elasticity and the running height is regulated by the limiter post, it is possible to eliminate tape running abnormalities near the control signal recording/reproducing head.

Embodiment A magnetic recording/reproducing apparatus according to an embodiment of the present invention will be described below with reference to FIG. In FIG. 1, parts that are the same as those in the conventional structure shown in FIG. 2 are given the same reference numerals.

The feature of this embodiment is that the limiter post 13 shown in FIG. 2 is eliminated and the distance l between the limiter post 12 and the capstan device 11 is set to 2.5 to 3.6 times the tape width.

Note that 14 is an added tape drawer bin, and 15 is a guide roller. According to the above configuration, when the magnetic tape is driven in the forward direction, the position of the tape with respect to the head 9° 1o is regulated by the limiter post 12, and when the magnetic tape is driven in the reverse direction, it is wound! Capstan device 11 from J-A/3
Even if the magnetic tape is slightly twisted or the supply height is not constant, by setting the distance between the capstan device and the limiter post 12 to 2.5 to 3.5 times the width of the magnetic tape, It is possible to prevent tape running abnormalities in the vicinity of the control signal recording/reproducing head and to prevent damage to the tape.

Effects of the Invention As described above, according to the present invention, it is possible to prevent tape running abnormalities during reverse running of a magnetic tape without increasing the number of parts, thereby preventing damage to the magnetic tape and wasting valuable recordings. In addition, it is possible to eliminate the limiter post between the capstan device and the tape cassette, etc.
It is of industrial value.

[Brief explanation of the drawing]

FIG. 1 is a tape path plan view of an embodiment of the magnetic recording/reproducing device of the present invention, and FIG. 2 is a tape path plan view of a conventional device. 1... Tape cassette, 2... Supply reel, 3... Take-up reel, 4a, 4b, 5a,
sb...Tape drawer post, 6...
Magnetic tape, 7... Rotating cylinder, 8...
... Erasing head, 9... Audio erasing head, 1o... Control signal recording/reproducing head, 11... Capstan device, 12°13.
...Limiter post for tape position regulation, 14...
...Tape drawer bin, 16...Guide roller, 16...Inheat tongue roller, 17.
...Tension post.

Claims (1)

[Claims] A magnetic head for recording and reproducing control signals on a magnetic tape, a capstan device for driving the magnetic tape so that it can run reversibly in front of the magnetic head, and a capstan device located between the magnetic head and the capstan device. , a limiter post that regulates the running height position of the magnetic tape, and a distance between the limiter post and the capstan device is set to be 2.5 to 3.5 times the distance of the magnetic tape. Features of magnetic recording and reproducing device.