JPH01285057A - Endless tape housing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endless tape storage device that is suitable for use in, for example, a videotape duplication printer and enables endless operation of long tapes.

[Summary of the invention]

The present invention is an endless tape storage device that enables endless operation of a long tape suitable for use in a videotape duplication puller, for example, and has an inlet and an outlet, and has a gap between the inlet and the outlet. The part of the flat tape storage body placed on the entrance side is made into a movable structure, and this movable part is made to move sequentially (single motion) to move the stored tapes in the direction of the exit of the flat tape storage body by means of vibration means. Therefore, mff1 remains constant regardless of the quantity and quality of tape stored.
The machine can be operated without damaging the tape by simply performing the following steps, and it is also possible to store a larger amount of tape than before.

(Prior Art) As an endless tape storage device that operates magnetic tape endlessly, for example, there is a duplication printer that transfers video tape at high speed.
In No. 16, we proposed a duplication printer as an endless tape storage device having U-shaped tape storage bodies arranged vertically. In the endless tape storage device proposed in Japanese Patent Application No. 61-259916, the bottom of the U-shaped tape storage body is vibrated to keep the stored tape in a floating state, making it possible to perform endless operation of long tapes. However, the length of the tape that can be stored is limited to relatively long tapes, and the tape tends to fall over inside the tape storage body.

In order to eliminate these inconveniences, the applicant has filed a patent application in 1982-
In No. 140690, an endless tape storage device shown in FIG. 9 was proposed. In the conventional example shown in FIG. 9, (2) indicates, for example, a two-hour endless master magnetic tape, and this master magnetic tape (2) magnetically records an inverted magnetic pattern that is an inversion of the normal recording pattern. ing. (12) is a flat tape storage body that stores a master magnetic tape and vibrates; (17) is a mechanical panel with a printer unit arranged horizontally; (16) is a mechanical panel (
17) is a base on which it is placed. In this case, the master magnetic tape (2) is placed at the outlet (1) of the flat tape storage body (12).
The transfer drum (2b) is disposed facing the transfer magnetic field head (3a) which is part of the printer unit.
3) and then the entrance (1) of the flat tape storage body (12).
2a) and an unrecorded slave magnetic tape (6) from the slave supply reel (5).
) is wound around the transfer drum (3) and then taken up by the slave reel take-up reel (7), and this transfer drum (
In 3), the slave magnetic tape (6) and the master magnetic tape (2) are moved by the transfer magnetic field head (3a) while applying air pressure to press and feed the slave magnetic tape (6) and the master magnetic tape (2) with their magnetic surfaces aligned.
The master magnetic tape (
The magnetic pattern of 2) is reversely transferred onto the slave magnetic tape (6). Also, (8), (10), (18
).

(19) is an air tension device, (20),
(21> is a capstan, (22a),
(22b) are air nozzles.

In the example shown in FIG. 9, the planar tape storage body (12) is separate from the mechanical panel (17) and is constructed in a movable structure as shown in FIGS. 9 and 10. That is, a frame (23) supporting the tape storage body is provided on the back side of the bottom plate of the flat tape storage body (12), and a base (26) is attached to the base (24) via an anti-vibration spring (25). A leaf spring (1) is provided between the base (26) and the frame (23).
5a) and (15b) are provided, and this leaf spring (15a)
, (15b), a flat tape storage body (1
2) is supported on the base (26). In this case, the leaf spring (
15a) and (15b) are provided on the entrance (12a) side of the tape storage body (12) so as to be inclined at a predetermined angle as shown in FIG. Also, the base (26) has an electromagnet (
13), the yoke (14) is connected to the tape storage body (
The electromagnet (13), the a-ri (14) and the leaf spring (15a) are fixed to the frame (23) of 12).
, (15b), the tape storage body (12) is photographed at a predetermined frequency and a predetermined amplitude in a direction (θ direction) perpendicular to the leaf springs (15a) and (15b). In this case, the tape storage body (1
The bottom of the tape (2) first moves from position A to position B, and at this time, the tape (2) is moved by gravity to the exit (1) in front of the bottom.
2b), and then when this bottom surface returns from position B to position A and then moves to position C, the tape (2) is accelerated in the forward diagonal direction and the leaf springs (15a), (
15b). In this case, the length of this master magnetic tape (2) is 250-1.
2b) The length between is approximately 1.5+, and from the B position of this bottom surface C
If the amplitude a1 of the positional progress locus is about 0.5W and the frequency of this vibration is 50Hz, then the moving speed Vm of this master magnetic tape (2) will be approximately 4a+ by adjusting the vibration frequency. / sec or 5++
+/sec high speed running and synchronization can be achieved.

When duplicating a large number of 2-hour magnetic tapes, the length of the master magnetic tape (2) will be approximately 250 m, and the length of the slave magnetic tape (6) will be approximately 4000 to 5000 m.
It is set to w. Therefore, by setting the slave magnetic tape (6) once on the slave supply reel (5) and driving the master magnetic tape (2) endlessly, approximately 16 to 20 volumes of magnetic tape can be duplicated.

In this case, the feed speed of the master magnetic tape (2) is 5 m.
+/sec, the time required to duplicate 16 to 20 volumes of magnetic tape is approximately 13 to 16 minutes.
・It is a minute.

[Problem to be solved by the invention]

When the endless tape storage device shown in FIG. 9 stores an amount of master magnetic tape (2) commensurate with its storage area and adjusts the tape feeding speed, the exit (12b) as shown in FIG. The tape (2) flowing out from the outlet side wall (t2
c), so no damage to the tape occurs; however, in this example in Figure 9, tape (2)
When the feeding speed of the tape (2) is increased, as shown in FIG.
) at part A, the tape (2) is blocked, and the curved part of the tape (2) is crushed at the exit (
12b), there is a problem that the tape may be damaged.

In this way, in the example of FIG. 9, the tape storage body (12)
The amount of tape that can be stored without damaging the tape (tape length) at the feeding speed of the tape is determined by the elasticity of the curved part of the tape being stored, so when actually operating this endless tape storage device, This method has the disadvantage that the tape feeding speed (imaging frequency and/or vibration amplitude of the tape storage body (12)) must be adjusted depending on the quantity and quality of the master magnetic tape (2) to be stored. Therefore, it was not possible to store a larger amount of tape.

Particularly recently, various special tapes such as metal tapes that are weak against curvature have been developed, and changing the tape feeding speed depending on the quality of the tape to be stored is time-consuming and complicated.

The present invention has been developed in view of these points, and its purpose is to be able to operate without damaging tapes by just making certain adjustments, regardless of the quantity and quality of tapes to be stored, and to be able to handle larger amounts of tape than before. To propose an endless tape storage device capable of storing tapes.

[Means to solve the problem]

The endless tape storage device according to the present invention has an inlet (12a) and an outlet (12b) as shown in FIG. Its entrance (12a) in the body (33)
The side part (31) has a movable structure, and this movable part (31
) (diaphragm) as the vibrating means (13).

(14), (15a), and (15b) vibrate to move the stored tape (2) sequentially toward its exit (12b).

[Effect]

According to the present invention, the vibration means (13), (14)
).

(15a) and (15b) cause the diaphragm (31
) is provided with an imaging component that sequentially moves the tape (2) stored in the exit (12b) direction, thereby causing the tape (
2) is given the feeding force. Further, a portion (32a) (first
(see figure) is fixed, so the tape (2) fed by its diaphragm (31) is decelerated by the braking effect of its fixed portion (32a). Therefore, as shown in FIG. 2, for example, the curved state of the tape (2) in the vicinity of the boundary (33a) between the diaphragm (31) and the fixed portion (32a)<v! i
The tape (2) near the entrance (12a) is denser than the curved state determined by its own elasticity, and the overall amount of tape (2) that can be stored in the same storage area is larger than before. be able to.

In addition, although the tape (2) is curved tightly near the boundary (33a), the force acting on the tapes is just that of the tapes pressing against each other, and no damage to the tape occurs. The tape (2) that has been pushed out toward the fixed part (32a) can be pulled out from the outlet (12b) at the point where it slowly expands due to its own elasticity, so that vibrations can be reduced depending on the quantity and quality of the tape. Board (31)
It is not necessary to individually adjust the amount of vibration of the vibration means (13), (1), and if the storage area is the same, the applied area of the vibration plate (31) can be made smaller than before.
4).

(15a) and (15b) can be simplified.

〔Example〕

Hereinafter, an embodiment of a videotape duplication printer as an example of the wireless end tape storage device of the present invention will be explained with reference to FIGS. 1 to 7. In FIGS. 1 to 3, FIGS. Portions corresponding to those in FIG. 10 are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

In this example, as shown in FIG. 1, the printer unit is placed horizontally on the mechanical panel (17) placed horizontally on the base (16), and the master magnetic tape (2 ) to run endlessly. That is, the master magnetic tape (2) that has rotated around the transfer drum (3) placed on the mechanical panel (17) is transferred to the air tension device (8).
) and the capstan (20) to the entrance (12a) of the flat tape storage body (33). The master magnetic tape (2) passes through the flat tape storage body (33) and exits from the outlet (12b) of the tape guide roller (3).
7d), an endless operation is performed to return to the transfer drum (3) via the capstan (21) and the air tension device (10).

In this example, the surface of the flat tape storage body (33) is made substantially the same as the upper surface of the mechanical panel (17), and the tape storage body (33) is separate from the mechanical panel (17) at its entrance. The part on the (12a) side is configured to have a movable structure. That is, the entrance (1) of this flat tape storage body (33)
2a) side as the imaging plate (31), its exit (12b)
The side is used as a fixed plate (32a). This fixed plate (32a)
The upper plate of the fixed stand (32) erected on the base (33) is used as it is. Also, the vibration & (31) is provided with a leaf spring (15a) as shown in Fig. 3.

(15b) are fixed at one end, and these leaf springs (15b) are fixed at one end.
a) and (L5b) to the base (3
9), and this base (39) is placed on a base (33) via a vibration spring (25). Then, an electromagnet (13) is fixed to this base (39) via an angle (13a), and its vibration &(3
1) with its electromagnet (13) acting on the yoke (14).
) is fixedly provided, and this electromagnet (13).

Yoke (14) and leaf spring (15a), (15
b) to connect this diaphragm (31) to this slope spring (15a).
) and (15b) in a direction (θ direction) at a predetermined frequency and a predetermined amplitude. In this case, the tape (2) on the diaphragm (31) almost reaches the vicinity of the center of the diaphragm (31)! It is sent along the 181L trace b1,
Since the movement of the tape (2) is given the floating component b3 from the imaging plate (31), the tape (2) does not fall over and a so-called jam-up does not occur. In addition, a leaf spring (15) is generated by an electromagnet (13) and a yoke (14).
The amplitude of vibration at one end of each of a) and (15b) becomes approximately equal to the movement amplitude b2 of the trajectory b1 of the tape (2).

The height of the upper surface of this diaphragm (31) is fixed k (
32a) is set to be slightly higher than the upper surface of the diaphragm (31) and the fixed k as shown in Figure 2.
(32a) is placed at a distance G in a stationary state. In addition, as shown in FIG. 1, the base (33) has side walls (34a) surrounding the flat tape storage body (33).
(34b) and (34c) are provided, and a transparent cover (35) is provided on these side walls (34a), (34b), and (34c).Then, as shown in FIG. A side wall (36a) on the fixing plate (32a) to partition the fixing area (length M),
(36b), and a side cover (32b) is provided at one end of this fixing plate (32a) integrally with this fixing plate (32a).
). In addition, the entrance (12a) of the diaphragm (31)
Air nozzle (3) for guiding the tape (2) on the side
8a) and a side wall (36a) on the fixed plate (32a).
) and (36b) are provided with tape guide rollers (37a) and (37b) for guiding the tape (2), and the tape (2) is placed on the exit (12b) side of the fixed plate (32a). A tape guide roller (37c) is provided to guide the tape toward the printer unit. Furthermore, air nozzles (38b) and (38c) are placed close to the tape guide rollers (37a) and (37b), respectively.
By blowing out air in the direction of arrows A and B, the tape (2) is attached to its side walls (36a) and (36b).
).

In this example, the vibration region F! in FIG. i1, that is, the length of the diaphragm (31) and the length M of the fixed area, that is, the portion from the other end of the fixed plate (32a) to the side walls (36a) (36b), are expressed as: L:M-2:1 ...(1) was set. Experimentally, when the length of the vibration area and the length M of the fixed area are approximately in the relationship expressed by equation (1), a large amount of tape (2) can be removed without coming into contact with the side walls (36a) and (36b). (2) could be stored, but even if the relationship between the length and the length M deviates greatly from equation (1), at least the amount of tape (2) stored can be larger than before. Further, in this example, the length of the vibration region is set to approximately 1000 t*, and the length M of the fixed region is set to approximately 500 t*.
When set to a crane, the width W of the diaphragm (31) and the fixed plate (32a) is set to approximately 500H, and the distance G between the diaphragm (31) and the fixed plate (32a) is set to about 1 movement. Set it so that it becomes smaller.

And length 250 as master magnetic tape (2)
m, the amplitude of the diaphragm (31) (
bz) was set to approximately 0.1w to 0.2wm, and the excitation frequency f was set to approximately 100Hz.

The excitation frequency of this diaphragm (31) is the diaphragm (31),
Leaf springs (15a) and (15b) and base (39)
When tuned to the natural frequency of the thread made of strands, an electromagnet (
Even if the force generated by the diaphragm (31) is small, it can be efficiently
) can be excited. In this case, tape (2
) is mainly adjusted by adjusting the amplitude of the diaphragm (31).

When loading a master magnetic tape (2) as an endless tape into such a flat tape storage body (33), first, as shown in FIG. master magnetic tape (2
) to the capstan (20) and the tape storage body (33).
), pull it out from the outlet (12b) through the inside of the tape storage body (33), hold the leading edge of the master magnetic tape (2) in this state, and then pull out the capstan (20). ) is set to the servo state and air is blown out from the air nozzles (38a) to (38c), and the electromagnet (13) is set to the operating state. At this time, the fifth
As shown in the figure, this master magnetic tape (2) is moved to the diaphragm (31) of this tape storage body (33) by vibration caused by an electromagnet (13) etc. that matches the feeding speed of the capstan (20).
), and when almost all of the master magnetic tape (2) is in this tape storage body (33) as shown in FIG. In this case, the master magnetic tape (2) in the tape storage body (33) is inserted while being given a predetermined vibration by the diaphragm (31), so that the tape storage body (33)
33) in the vicinity of the entrance (12a), they are inserted in a loose state on average. However, the tape (2) fed by the diaphragm (31) is not subjected to any feeding force other than the pressing force between the tapes on the fixed plate (32a) of the tape storage body (33). Therefore, since the fixed plate (32a) has a kind of braking effect, the tape (2) is decelerated at the boundary (33a) between the diaphragm (31) and the fixed plate (32a). Therefore, the curved state (m degrees) of the tape (2) is relatively rough near the entrance (12a) of the tape storage body (33), determined by the elasticity of the tape (2) itself, whereas at the boundary In the vicinity of (33a), the tape (2) has a closed shape and its curved state is dense. Also, the side wall of the tape storage body (33) (
36a) and (36b), tape (2
) is in a state where it slowly expands due to the tape's own elasticity, and the curved state of tape (2) has become relatively rough again.

In addition, in this example, when the number of layers of tape (2) to be stored is small, the curved state of the tape changes from the entrance (12a) [llJ to the exit (12) of the tape storage body (33), as shown in FIG.
b) side is coarse-dense and coarse.

After setting the master magnetic tape (2) in a state where it can be operated endlessly, as shown in FIG. The slave magnetic tape (6) is wound from the slave supply reel (5) onto the slave take-up reel (7) while applying air pressure and running the slave magnetic tape (6) in a state where the two are combined. Then, transfer magnetic field head (3
By applying a transfer magnetic field from a), an inverted pattern of the magnetic pattern of the master magnetic tape (2) is transferred to the slave magnetic tape (6), and this transfer occurs when the slave magnetic tape (6) of the slave supply reel (5) It can continue until it runs out.

According to the endless tape storage device of this example, as shown in FIG. 2, the curved state (density) of the tape can be adjusted to
33), the area near the boundary (33a) between the diaphragm (31) and the fixed plate (32a) is made denser than the natural curved state, so there is an advantage that a larger amount of tape can be stored in the same storage area than before. be. In addition, near the side walls (36a) and (36b) of the tape storage body (33), the tape (2
) is used to pull out the swollen area with its own elasticity, so the tape (2) is attached to the side wall (36a),
(36b) There is no risk of contact with the tape (2) and there is no damage to the tape (2). Therefore, there is an advantage that there is no need to adjust the excitation frequency, excitation amplitude, or inclination angle of the leaf springs (15a) and (15b) of the tape storage body (33) in order to prevent damage to the tape (2).

Furthermore, in this example, the length of the diaphragm (31) is approximately 2/3 or less of the total length of the tape storage body (33), making it smaller than before, so the amount of tape to be stored is increased. In addition, the support structure of the base (39) and the electromagnet (13) as a photographing means, the leaf spring (15a), (15
There is an advantage that the structure of (b) etc. can be simplified and the electric power required for excitation can be reduced.

In addition, in this example, the tape (2) is fixed k (32a
), and the tape (2) is pulled out from between the side walls (36a) and (36b) on the top of the fixing plate (32a). It is also possible to have a structure in which the tape storage body (33) is pulled out. In that case, there is an advantage that the total length of the tape storage body (33) can be further shortened.

Further, in this example, an electromagnet (13) etc. were used as the vibration means, but the present invention is not limited to this.
As shown in the figure, a leaf spring (15a) is used as the vibration means,
A structure may be used in which bimorph elements (41a) and (41b) made of piezoelectric elements etc. are attached to both sides of each of (15b). In this case, for example, the bimorph elements (41a) and (41b) have a phase difference. 180
゜By giving different expansion and contraction signals, the diaphragm (31)
vibrates obliquely upward (in the ax direction) perpendicular to the leaf springs (15a) and (15b). Further, in the above embodiment, the diaphragm (31), which is a part of the flat tape storage body (33), was vibrated diagonally upward, but instead of this, the diaphragm (31) was vibrated vertically. Tape (2
) in a floating state and further flat tape storage body (33)
It is easy to understand that the same effects as in the above-mentioned embodiments can be obtained even if the tape (2) is moved by electric power by gently tilting the tape (2).

In addition, in the example of FIG. 1, the ratio of the length of the vibration area to the length of the fixed area shown in FIG. (33) Exit (1
It is clear that it is sufficient if a fixed area is provided on the 2b) side. Furthermore, although the above-mentioned embodiment shows the case where the endless tape storage device of the present invention is applied to a video tape duplication printer, the present invention can also be used in other ways, such as by constantly recording status signals of various systems and controlling the operation when an abnormality occurs. It can also be applied to an endless state monitoring device that stops and restores the state signal before the occurrence of an abnormality.

As described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations can be taken without departing from the gist of the present invention.

[Effects of the Invention] According to the present invention, since the entrance side part of the flat tape storage body has a movable structure, the tape moves from the movable part (31) to the fixed part <32a) of the tape storage body. (2) is braked and the tape (2) is curved tightly, which has the advantage of being able to accommodate a larger amount of tape than before. Also, the tape (2) is braked at the fixed portion (32a), and the tape (2) is attached to the side wall (36a) of the tape storage body.
), (36b) without contacting the tape (
2) There is no damage and there are good benefits with only constant adjustments, regardless of the quantity and quality of the tape being stored.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an example of the endless tape storage device of the present invention, FIG. 2 is a plan view of a portion of the example shown in FIG.
FIG. 3 is a front view of the example in FIG. 1 excluding the side wall (34a), FIGS. 4 to 7 are diagrams for explaining the operation of the example in FIG. 1, and FIG. 8 is another example of the present invention. FIG. 9 is a perspective view showing an example of a conventional endless tape storage device;
Figure 0 is a front view of the main part of the example in Figure 9, Figure 11fS11 is the first
Diagrams for explaining the operation of the example in Figure 0, Figures 12 and 13
Each figure is a plan view of a main part used for explanation of the example in FIG. 7. (2) is the tape, (12a) is the inlet, (12b) is the outlet, (13) is the electromagnet, (14) is the yoke, and (15a). (15b) is a slope spring, (33) is a flat tape storage body, (31) is a diaphragm, and (32a) is a fixed plate.

Claims (1)

[Claims] A planar tape storage body having an inlet and an outlet and arranged between the inlet and the outlet has a movable part on the inlet side, and the movable part is vibrated to move the stored tape in the direction of the outlet. An endless tape storage device characterized by vibrating so as to move the tape sequentially.