JPS6019064B2 - Magnetic tape running device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic tape running device for a high-speed endless playback machine.

The high-speed endless recorder consists of a master player of the high-speed endless player that plays magnetic tape, and a slave recorder that has a recording machine. Multiple slave recorders are connected in parallel to one master playback machine, and the signal played from the master playback machine is sent to multiple slave recorders at the same time ~ The same signal is transferred to the cassette tape by the slave recorder's recorder. There is also a high-speed recording system that uses magnetic recording on cartridge tapes. The magnetic tape used in the master player is the sound source sent to the slave recorder, and must be handled with care. The tape running speed of a high-speed endless playback machine is so fast that it is very difficult to make it run stably.For example, the tape speed is 19 skins/se.
c x 32 times, and the tape runs at a speed of nearly 6 speeds per second.

For this reason, various troubles occur during tape running, such as turning the tape over, entangling it, and pulling other parts of the tape, which often results in damage to the magnetic tape.
In order to eliminate the above-mentioned drawbacks, the present invention provides a suction hole in the guide wall for attracting the magnetic tape, thereby creating a certain loop and causing a wave-like meandering, thereby stabilizing the overall running of the tape.

The present invention will be explained by way of an example. FIG. 1 is a perspective view of an embodiment of the present invention, in which the pinch rollers 1 and 2 press against the capstans 3 and 4, so that the magnetic tape 9 is positioned approximately on a tangent to the rotating direction of the capstan 4. Peeling wall 6
The tape travels through the guide wall 7.

At this time, the magnetic tape 9 is attracted by the suction force of the suction hole 8 in the A part, which is always in a suction state when the machine is operating, so the running of the magnetic tape in the A part stops momentarily. Since it is continuously fed out by the pinch roller 2, the magnetic tape 9 at the rear in the direction of movement of section A separates from the guide wall surface 7, and a loop-shaped magnetic tape is formed between the detachment point B and section A at the suction hole position. Tape wavy meandering 9
When the apex of the meandering located on the opposite side of the guide wall 7 that causes the magnetic tape a comes into contact with the pulley and belt of the tape feeding device 10, which is also provided opposite the guide wall 7, the magnetic tape is energized by the belt and moves to the section A. It advances along the guide wall 7 in the sending direction C while maintaining the wavy meandering shape by overcoming the adsorption force of. Further, the shape and height of the wave-like meandering can be changed by changing the position of the suction hole in the A part, the suction force, and the distance of the feeding device 10 facing the guide drop 7. Since the height of the meandering waves of the magnetic tape is constant depending on the distance between the guide wall 7 and the belt of the feeding device 10, the bending state of the magnetic tape sent to the tape pool 11 is also constant and stable. The magnetic tape is again in the tape pool 11
The running of the tape near the point E where it is pulled out from the magnetic tape is extremely stable, and the magnetic tapes do not become entangled, turn over, or pull in.

Therefore, the magnetic tape 9 is sent to the reproducing head mechanism 12 again by stable running, and high-speed reproduction can be repeatedly performed.

The detachment of the loop of the magnetic tape from the attraction force is thought to be caused by the relationship between the elasticity of the magnetic tape and the attraction force, but it goes without saying that the loop may be created by intermittent attraction instead of continuous attraction.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention. 1 and 2 are pinch rollers, 3 and 4 are capstans, 6 is a tape peeling wall, 7 is a guide wall, 8 is a suction hole, 9 is a magnetic tape, 10 is a tape feeding device, 11 is a tape reservoir, 12
is the playback head mechanism. Figure 1

Claims (1)

[Claims] 1. A magnetic tape running device of a high-speed endless playback machine includes a playback head for playing back the magnetic tape, a pinch roller and a capstan for feeding the magnetic tape to the head,
A peeling wall for peeling off the magnetic tape from the capstan approximately tangential to the rotational direction of the capstan, a guide wall extending in the direction of guiding and sending out the magnetic tape, a suction hole for sucking the magnetic tape to the guide wall, and a peeling wall for peeling the magnetic tape from the capstan. A feeding device is installed on the opposing wall to send the magnetic tape in the sending direction, and the magnetic tape fed out by the high-speed rotation of the capstan is attracted by the suction hole, and the magnetic tape is sent out to the opposing wall while forming a loop, and the end of the loop is A magnetic tape running device characterized in that when the loop comes into contact with a feeding device, the loop moves in the sending direction and the loop separates from the attraction force, which is repeated.