JPS60103548A - Tape running device - Google Patents

Abstract

PURPOSE:To attain sure recording and reproduction by providing a tape guide means for regulating other end of a tape in broadwise direction to prevent a track shift. CONSTITUTION:A tape guide 15 is made of a thin and long plate member and a bottom part 15a is fixed to a head stand 12 with screws. A couple of standing parts 15b are provided in the vicinity of both ends of the bottom part 15a by clipping a head 13. In recording or reproducing a signal to a track T1 existing eccentrically at an edge 22b of the tape 22, the edge 22a of the tape 22 is regulated by a stopper 15d through the operation of a tapered curved face 15c and pushed up to the height. Since the tape broadwise direction is regulated accurately by the stopper 15d and the head touch is improved while the edge 22b of the tape 22 is kept to a large tension, the recording and reproduction to the track part T1 are performed surely. Furthermore, in conducting recording or reproduction to a track T2 biased to the edge 22a of the tape 22 conversely, the tape guide 15 is placed to the opposite side by 180 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape running device designed to perform good head touching on a predetermined portion of a tape.

A conventional tape guide structure in a tape player such as a cassette tape recorder is shown in FIG. 1 (al.

A structure as shown in fbJ is known.

Figure 1 (aL [In bl, 1 is the tape and 2 is the head.

Reference numeral 3 designates a guide member, and the tape is regulated in its width direction by a guide member 3VC having a U-shaped cross section as shown in FIG.

However, in this structure, it is difficult to accurately regulate the width of the chi 110 due to variations in dimensions between the upper and lower regulating pieces 3a and 3b of the guide member 3, variations in the width of the tape 10, and the like. For this reason, when performing multi-track recording 7 for high-density recording of analog and digital signals, the track pitch becomes narrower, making it difficult to make the head touch a predetermined track portion of the tape in good condition.

This is the only way to improve this problem.

It has been proposed to use a guide member as shown in FIG. In the figure, the guide member 3 is provided with a tapered curved surface portion 3C for allowing the tape to run in contact with each other, and a stopper portion 3d integrally provided at the end of this tapered curved surface 1i53c. While the tape is running, the tape l has a tapered curved surface portion 3.
The ciCG receives the can pushed upward, so the end 1a is in contact with the stopper @ 3 dK.
After being pushed up at point t', the tape is accurately regulated to a constant height by the stopper portion 3d, and the tape travels.

However, in this structure, when the tape is run while the end 1a is restricted by the stopper s3d, the end 1a of the tape 1 and the opposite end 1b are separated as shown in FIG.
VC such that a difference occurs in the tension of the tape between the two ends, and a phenomenon occurs in which the force of the end portion 1a in contact with the stopper portion 3d becomes smaller. As a result, differences in head touch conditions occur due to the width of the tape 10 times, and it is necessary to ensure that recording and playback are not performed reliably on the track portion located on the end 1a side. become.

Therefore, it is desired that recording and playback be performed reliably with the tape width force rotation accurately regulated.

The present invention has been made in response to the above problems.

Recording is performed on the track part that is biased toward one end of the tape in the width direction.
When reproducing, a tape guide means for regulating the other end of the tape in the width direction is provided to ensure that recording and reproduction are performed on the track portion at one end of the tape in the width direction. It is an object of the present invention to provide a tape running device which removes the following. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

The fourth factor and FIG. 5 are a plan view and a front view showing a tape running device according to an embodiment of the present invention. Double playback head 13, erase head 1
4. Tape kite 15. Head mounting base 16. A head block mounting base 17 is also provided.

The head block mounting base 17 is a plate-like member fixed to a support 18 erected on the head base 2 with screws 19, and has three adjustment screws 20 in the center. The head mounting base 16, which has an angled cross-section, is fixed to the tip via a spring 21k.

The throat 13 is fixed to the inner wall of the head mount 16, and the erasing head 14 is fixedly fixed 8 on the head mount 12+C.

Further, the tape guide 15 is made of an elongated plate-like member,
The bottom portion 15a is fixed to the head stand IZ with screws, and the bottom portion 15a has a pair of raised capitals 15b near both ends so as to sandwich the head 13 therebetween. This rising capital 1
5b is a tapered curved surface portion 15c for running the tape ρ in contact with it, and a tape end portion 22a integrated with this tapered curved surface portion 1!5cK, as shown in FIG. Set the stopper part 15 d and set it.

The VC on the chassis 11 is further attached with a normal pinch roller part and a carburetor tongue, and the VC and head 13 are also attached.
Guide bin portions are symmetrically provided at appropriate positions on both sides.

Reference numeral 26 denotes a cassette nozzle storing 22 tapes, a first nozzle (not shown) that fits into a winding reel (not shown) of the traveling steel mill, and a supply reel shaft. (
and a second knob (not shown) that fits 1° in the figure (see figure 7'1).

The tape η wound around these (sign 2 when wound)
7.28) is provided with a pad 29 for pressing the tape 22 against the head 13.

When running a tape in the above configuration, an example is the seventh
When recording or reproducing on the track T1 portion where 5TICf-Pη end @22bVC is biased as shown in (1), the action of the tapered curved surface $15c as shown in Figure 7(b) Tape η is stopper 115
The end portion 22a is pushed up to the negative position by d. When the tape width direction is accurately regulated by the stopper part 15d, the tape η
Since the end 522b side is maintained at a thick tension, the head touch is good, so that recording and reproduction on the track T1 portion can be performed reliably.

In addition, as shown in Fig. 8 (al t < b), the tape η
When recording or reproducing on the track T2 portion which is biased toward the accommodation 22a side, the tape guide 15 is placed on the side opposite to 1bl and 180' in Fig. 8 (bJ). By using the same method as in the case of Figure 7 (BL O), record the 1st and 2nd sections of the above tone and make the FJ raw run smoothly.

When running the tape in contact with each other, the means to push it up in a certain direction or push it down are as follows:
As mentioned above regarding the use of the tape's curved surface, it is possible to use the method of 1 m without worrying about this.

FIG. 9 1al to tdJ show the targets of these means.

fal is a tape-contact guide fNt, a winding using a combination sensor of 31a and 31b with different friction coefficients as blades, and tbl is a hole 32 with different diameters in the guide member.
In the case where the contact surface i*Y in the tape width direction is made to look like Tj by providing a
Combination of a and rotary cylinder 533b] - For IJ use.

(dl is an example of a case where a roller 34 such as a pinch roller is made to be eccentric and a 7/1 pitch is used.

FIG. 10 shows the shape of the cassette pack used in the present invention, where 35a to d indicate the windows that expose the tape 22. Of these, the window 35a is used for recording and playback. For insertion of head 13, window 35
b is for inserting the tape guide 15, window 35c is erased.
, for inserting the Rad 14, and the window 35d is the pinch roller 23.
It is for insertion.

As is clear from the above description, according to the present invention, when recording or reproduction is performed on a track portion that is biased toward one end of the tape in the width direction, the tape guide means for regulating the protruding end of the tape in the width direction is provided. Since the structure is such that the tape width direction can be accurately regulated, track misalignment will not occur even when the track pitch becomes narrow as in a multi-track system. Furthermore, since it is important to ensure that the head tarpaulin is good for a given track portion, it is important to ensure that recording and reproduction are performed reliably.

[Brief explanation of the drawing]

Figure 1 (al, (bl) is a front view and side view showing the conventional example, Figures 2 and 3 are side views and front views for implementing the present invention, Figures 4 and 5 are the present invention. A plan view and a front view showing the implementation row, FIG. 6 1aL (bl is a perspective view and a side view of the tape guide means used in the present invention, FIG. A front view and a side view showing the operation of the present invention. Fig. 9 [al to dJ are schematic diagrams showing other configurations of the tape guide used in the present invention, and Fig. 1θ is a schematic diagram showing the cassette tape guide applied to the present invention. This is a picture of Sou F celebrating. 13, 14...Head, 15...Tape guide, 1
5C... Tapered curved surface portion, 15d... Part of stopper, 22... Tape. ρa, 22b...tape end, Z...pinch roller, 5...id bin, 26...cassette back,
35 a = 35 cl...Tape exposure window Figure 6 Figure 7 Figure 9

Claims (1)

[Claims] 1. Track portion V biased toward one end in the width direction of the tape
In a tape player that records and plays cuts. A tape running device characterized in that a tape guide means is provided for regulating the other end side of the tape in the width direction. 2. The tape guide means has a tapered curved surface portion for tape v contact M, i1 line 7:) and a stopper integrally provided with this tapered curved surface portion for regulating the tape end portion. The tape running 1L according to claim 1, characterized in that it is composed of parts and parts.