JPS61187150A - Reverse type tape running device - Google Patents

Abstract

PURPOSE:To enable correct tracking suppressing waving in normal and reverse directions by inverting the base stand having a stopper face for regulating position by a turning means every time the direction of tape running is changed to regulate the position of the tape. CONSTITUTION:When running a tape in normal direction, a base stand 6 is controlled to position the core face 1A of a head 1 to the height of a track 2A for going of the tape 2, and the tape is run. The position of an end face of the tape 2 is regulated by the stopper face 8B by the action of a slanted guide face 8A. When running the tape in reverse direction, a turning means 4 and the base stand 6 are retreated by a retreating device 10, and the base stand 6 is controlled to position the core face 1A of the head 1 to the height of the return track 2B of the tape 2 by inverting the base stand 6 around a shaft 9. Then, tape running is made similarly to the case of running in normal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a reverse type tape transport device tlC which allows correct tracking of the tape in both directions.

B. Summary of the Invention The present invention provides a reverse type tape running device k that runs the tape in both the 11 direction and the reverse direction, in which a base is attached to which a head and a tape kite are attached so as to be positioned in the opposite direction. By reversing the base each time the direction is epicentered, both end faces in the length direction of the tape are made to have a base advance range in kilometers in the tape radial direction when the tape runs in both forward and reverse directions. be.

C. Conventional technology In a tape running device such as a tape recorder, a so-called reverse type tape running device is used in which the tape is continuously run from the +h direction to the reverse direction in order to record or play back the tape while it is installed in the main body of the device. In the case of tape tapes, the trunk position where the tape head contacts in the reverse direction differs in the tape width direction, so it is necessary to set the head at different positions corresponding to this.

One way to set up the head for this purpose is to
There is known a method in which a common head is used for 11 reverse directions of the tape, and the head is reversed every time the running direction is changed, so that the heights are positioned at respective half trunk positions.

FIGS. 5(al) and 5(b) are microscopic diagrams showing such a head reversal type reverse type tape running!11g[, where l is the head.

2 is a tape to be brought into contact with the surface of the head, and 3 is a pair of tape guides arranged at the entrance and exit sides of the head 10, respectively.
t, and 4 is a rotating means for inverting the head 1 in the forward or reverse direction at an angle of 180° about an axis 5 perpendicular to the tape 2 surface.

First, when the tape 2 is to be run in the opposite direction, for example, to the left, the core surface IA of the head 1 is positioned at the forward trunk 2A of the tape 2, and then the tape 2 is moved in the opposite direction, for example, to the right. When running, the head 1 is reversed around its 4III5 by the movement K of the rotating means 4, so that the core surface IA is aligned with the narrow track 2B of the tape 2 (
1) One continuous tape run is performed by positioning the tape in the island.

In this case, the rotation axis 5 of the head 1 is set approximately at the center 11 of the tape 2 in the width direction. In addition, when the tape runs, the position of both ends of the tape 2 in the length direction is regulated by the guide pieces 3A and 38 of each of the tape guides 3, so that deviation in one direction or bright waving is prevented from occurring. It is measured in

A reverse type track structure with such a structure requires only one set of heads, so the IJM electric circuit also has the advantage of being less expensive.
In the case of analog recording, it has not been put to practical use in a wide range of applications.Problems to be Solved by the InventionBy the way, in digital recording, which has been rapidly developing recently, it is difficult to record tracks added in the width direction of the tape. Since this is required, the trunk pitch becomes extremely narrow, and for example, the pitch of l trunk white is f-J life μm w1
degree is now required. If you try to perform such digital recording with a conventional reverse type tape running device, the position of the tape guide during tape running cannot be regulated in any way, so waving, which was not a problem with analog recording, becomes a problem, and recording or playback becomes difficult. The present invention has been made from the above viewpoint, and a track pitch with a high ellipse is desired. The object of the present invention is to provide a 5K reverse type tape running device that can perform accurate tracking by suppressing waving in both directions even in such applications.

In order to achieve such an object, the present invention provides a top slanted kite surface and a biasing surface for varying the contact pressure between the recording head and the tape along the tape width direction and biasing the tape in both directions. A tape kite member is provided with a tension bar surface for positionally regulating both end faces in the length direction of the tape.
and a rotating means for inverting the base about an axis perpendicular to the tape surface, and each time the tape running direction is changed, the rotating means rotates the tape. The present invention provides a reverse type tape running device configured such that the tape runs with one end surface of the tape always being regulated in position by a stopper surface each time the position of the base is reversed.

F Function The above configuration has the disadvantage that when the tape runs in both directions, both end surfaces in the length direction of the tape act as base difference surfaces for the position in the tape width direction. Mosquito waving can be suppressed to a minimum.

G Fruitful example The present invention will be described below with reference to the drawings.

@! FIG. 1 is a perspective view of a reverse type tape attachment device made of MgM according to the present invention, and 6 is a base, and a head 1 is attached to the center of the base. Note that 7 is an adjustment member for adjusting the straight position and azimuth angle of the head 1. Further, a pair of tape guide members 8 are attached to the ends of the base 6 that are adjacent to the inlet side and the outlet side of the head l.

Each of these tape guide members 8 is an inclined guide U for making the contact pressure with the tape different along the tape width direction and biasing the tape in one direction when it comes into contact with the tape.
kU8A and a stopper surface 8B for regulating the position of one end surface in the length direction of the biased tape. Although the structure of the tape guide member 8 (Ml guide enclosure 8Af) may undergo some ugly deformation, there may be a slight deformation (at least a part of it may
Jl Liangmian? Having one is an essential condition.

21g (al, (bl, (cl) is a side view showing the deformed structure of the rhyme slope guide surface 8A, (aJ is a structure in which one song slope 8C is formed over the entire surface of the one song slope guide surface 8A, ( b) shows a structure in which an inclined surface 8C is formed in one part and a vertical image 8D in the other part, and (C) shows a structure in which a curvature R is formed in the middle part by a combination of an inclined surface 8C and a vertical image 8D. It is.

When the tape 2 is made to run by following the inclined guide surface gAK, the distribution of contact pressure becomes smaller in the six parts of the tape 2 in the width direction that are closer to the stopper surface 8B. After the surface 8Brlc receives a biasing force and makes one contact until it comes into contact, the tape runs with the position of one end surface regulated by the stopper surface 8B.

A rotating means 4 is attached to the back surface 6A of the base 6 via a shaft 9 that extends perpendicularly to the tape surface.
The rotating means 4 is composed of a motor, a plunger, etc., and is controlled by an operation control 1141 every time the tape running direction is changed.
The base 6 is moved to the shaft 9 according to instructions from a device (not shown).
It operates to invert at an angle of about 180° with the center axis as the central axis.

Step 0 is a retracting means which holds the rotating means 4 and, prior to performing the reversing operation, temporarily moves the rotating means 4 and the base 6 back in the direction Ki away from the tape.

The operation of running a tape using the tape running device of the present invention will be described below with reference to FIGS. 3(al) and 3(b).

First, in the case of forward assimilation running, the tape is run by controlling the base 6 so as to position the core surface IA of the head 1 at the height of the outgoing trunk 2A of the tape 2 as shown in FIG. 3 (aJ). From K, the tape 2 runs with one end surface regulated in position by the stopper surface 8B due to the movement of the inclined guide surface 8A, so the dimension A from the one end surface to the end of the trunk 2A is It is always kept constant as shown in Figure 4.

Next, when traveling in the opposite direction, the 1!21 turning means 4 and the base 6 are moved backward by the action of the 5 IC shown in FIG. By inverting the base 6 about the shaft 9 as a central axis by the action K, the base 6 is rotated so that the core surface IA of the head l is positioned on the island of the return trunk 2B of the tape 2.
is controlled to run the tape. This allows the head
At the same time, the position of the tape guide member 8 is also reversed, but since the relative positional relationship between the two parts remains the same as before the reversal, the tape runs in the same way as in the forward direction. In other words, the tape 2 runs with the position of the other end surface (opposite to the above-mentioned one end surface) being regulated by the stopper surface 8B due to the movement of the power side 8A for one song.
1 method B up to the @ part is always kept constant as shown in FIG.

In this way, when Jwi runs in both directions, both ends of the tape in the length direction are the base surfaces for regulation, and the 1-position regulation is strictly enforced, so waving is kept to a minimum. This allows correct tracking of the head relative to the tape.

Therefore, when installing tape, use side A of the bank.

Correct tracking can be performed no matter which side of the B side is selected above, so even when a trunk pitch of 1 degree is required, such as in digital recording, it can be satisfactorily handled.

The distance to shift the cheese in one direction is the stopper ■8
When setting a contact pressure of 5 g or less for B, the contact pressure is as small as 1 m or less. Therefore, when the head l is reversed, by selecting its axis of rotation at the center of the tape width, the core IA can be perfectly positioned with respect to the corresponding trunk.

Effects of the Invention As is clear from the above description, according to the present invention, a base having a head and tape guides attached on both sides of the head is provided, and when the tape running direction is changed, the base is reversed. Since both end faces in the length direction of the tape are made to be the standard surface of the regulation at the position of the width direction of the tape in both forward and reverse tape running, the first m regulation is effectively carried out. As a result, waving can be minimized and accurate tracking can be performed.

According to the present invention, even if there is an error in the tape width dimension, the position is regulated using both end faces in the length direction of the tape as reference planes, so correct tracking is performed regardless of the It's all about making it compatible.

The forehead Ipr guide surface and the stopper surface constituting the tape guide member may be assembled integrally at the same time, or may be integrally assembled using materials prepared separately 1d. Also, the retraction means is 11! by a motor or plunger, similar to the rotation means. Alternatively, a mechanism for retracting the member when attaching or discharging the tape may be used as is.

If only a part of the tape guide member is provided with an inclined surface, good head contact with the track surface should be maintained by arranging it in a position where it does not come into contact with the trunk surface that is the object of recording or recording when the tape is running. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a g+ view showing an embodiment of the present invention, and FIG. 2 (al~
(C) is a side view for explaining the present invention, FIG. 3(a)
. (BL and FIG. 4 are front views for explaining the present invention. FIGS. 5A and 4B are a perspective view and a front view showing a conventional example. ■...Head, IA...Core surface, 2... tape,
2A. 2B...Trunk, 4...(B) Transfer means, 6...
Base, 8... Tape kite member, 8A... Inclined guide surface, 8B... Stopper surface, 8C... Inclined surface, 8
D... Vertical surface, 9... Shaft, lO... Retraction means. Patent Applicant Akai Electric Co., Ltd. Agent Masuji Mizu 1) Gosanbu :: ': t,
r... Figure 1 Figure 2 C Figure 3 Figure 4 (b)

Claims (1)

[Claims] 1. An inclined guide surface for biasing the tape in one direction by varying the contact pressure between the recording/reproducing head and the tape along the tape width direction, and the length of the biased tape. A tape guide member having a stopper surface for regulating the position of one end face in the direction is commonly attached so that the tape guide member is disposed on the inlet side and the outlet side of the recording/reproducing head. a base; and a rotation means for reversing the base about an axis perpendicular to the tape surface, the rotation means reversing the position of the base each time the tape running direction is changed. A reverse type tape running device characterized in that the tape is run with one end surface of the tape always being regulated in position by a stopper surface. 2. Claim 1, further comprising a retracting means for retracting the base in a direction away from the tape.
Reverse type tape running device as described in section. 3. The reverse type tape running device according to claim 1 or 2, wherein the inclined guide surface has an inclined surface having a dimension larger than the tape width. 4. The reverse type tape running device according to claim 1 or 2, wherein the inclined guide surface has an inclined surface having a dimension smaller than the tape width. 5. The reverse type tape running device according to claim 4, wherein the inclined surface is provided at a position that does not contact the track surface of the tape to be recorded or reproduced.