JPH0419858A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To stably read out a control signal and a data signal even at the time of high speed traveling by pressing a magnetic tape against a control head by means of a pad. CONSTITUTION:When the magnetic tape 10 is loaded, a rotary shaft 12 is rotated clockwise, and the magnetic tape 10 is pressed to a felt 13 to be in close contact with the control head 2. Under this condition, even when the magnetic tape 10 is made to travel at high speed, no vibration of the magnetic tape 10 takes place between the magnetic tape 10 and the control head 2. By this method, the stable control signal and data signal can be taken out. Then, even when tension by tension control pins 5 and 7 is weakened, the stability of contact between the magnetic tape 10 and the control head 2 is not so changed, so that the high speed traveling can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device in which control signals are recorded.

(Prior Art) FIG. 3 is a diagram showing a tape reproducing state of a conventional magnetic recording and reproducing device, in which 2 is a control head that contacts the magnetic tape 10 to record and reproduce control signals on the magnetic tape 10; A capstan shaft 3 rotates to run the magnetic tape 10, a capstan shaft 4
a pinch roller 5 that transmits the rotational force of the capstan shaft 4 to the magnetic tape 10 with the magnetic tape 10 sandwiched therebetween;
6 is a tension control pin that adjusts the tension when rewinding the magnetic tape 10; 6 is a bidet cap that stores the magnetic tape 10; 7 is a tension control bin that adjusts the tension when feeding the magnetic tape 110; 8a, 8b; 9 is an impedance roller that absorbs vibrations of the magnetic tape IO, and 9 is a rotating drum equipped with a rotating head. 14.15 is a supply side reel and a take-up side reel provided in the bidet center 6, 16.17 is also a fixed bin in the cassette, 1
8.19 is a roller in the cassette.

Next, the operation will be explained. The magnetic tape 10 pulled out from the supply reel 14 of the video cassette 6 is run at a constant speed by the capstan shaft 4 and the pinch roller 3. At this time, a certain tension is applied to the rotating drum 9 and the control rod 2 by the tension control bin 7, and information is recorded and reproduced on the magnetic tape 10 via the video head and hi-fi head of the rotating drum 9. Furthermore, the control head 2 records and reads control signals and data signals on the magnetic tape 10. Next, during fast forwarding or rewinding, the capstan shaft 4 and the pinch roller 3 are separated, and the magnetic tape 10 is run at high speed. At this time, the tension control bin 7 operates during fast forwarding and the tension control bin 5 operates during rewinding so that the control head 2 and the magnetic chip 110 come into contact with each other.

(Problems to be Solved by the Invention) Since the conventional magnetic recording/reproducing device is configured as described above, the tension applied to the magnetic tape 10 must be increased to a certain extent, and if the magnetic tape 10 is loaded onto the rotating drum 9, the high speed There is also the problem that the control head 2 cannot reliably read control signals and data signals due to vibrations of the magnetic tape 20 at high speeds.

This invention was made in order to solve the above-mentioned problems, and it is possible to stably bring the magnetic chip 110 into close contact with the control pad 2 even when the magnetic tape 10 is running in any state, thereby increasing the speed. It is an object of the present invention to provide a magnetic recording/reproducing device which is easy to read control signals and data signals and can read control signals and data signals reliably.

[Means for Solving the Problems] A magnetic recording and reproducing apparatus according to the present invention is provided with a pad that presses a magnetic tape against a control head when loading the magnetic tape.

[For production]

In this invention, when loading the magnetic tape, the magnetic tape is pressed against the control head by the pad, and stable contact between the magnetic tape and the control head is obtained.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows the configuration of a magnetic recording and reproducing device according to this embodiment,
1 is a pad assay, and the other configurations are the same as in FIG. 3. FIGS. 2(a) and 2(b) show perspective views of the pad assay 1, in which (a) shows the loading of the magnetic tape 10;
(b) shows the time of unloading. 12 is a rotating shaft rotatably supported by the cassette deck; 11 is a pad holder formed integrally with the rotating shaft 12; and 13 is a pad attached to the pad holder 11, that is, felt in this case.

Next, the operation will be explained. First, when the magnetic tape 10 is loaded as shown in FIG.
As shown in Figure (a), the rotating shaft 12 is rotated clockwise, and the magnetic tape 10 is pressed against the felt 13 and brought into close contact with the control pad 2. In this state, even if the magnetic tape 10 is run at high speed, no vibration of the magnetic tape 10 occurs between the magnetic tape IO and the control head 2, so that stable control signals and data signals can be extracted. Moreover, even if the tension by the tension control bottle 5.7 is weakened, the magnetic tape 10 and the control head 2
Since the stability of contact with the vehicle does not change much, high-speed running can be easily achieved. When the magnetic tape 10 is in an unloaded state, that is, when it is stored in the bidet center 6, the rotating shaft 12 is rotated counterclockwise as shown in FIG. Tape 10 becomes free.

In the above embodiment, the felt 13 is attached to the rotating shaft 1.
2, the felt 13 may be pressed against the magnetic tape 10 by a plunger. In addition, the magnetic pad 11 is elastic and uses felt 13 as a pad.
Other materials may be used as long as they do not interfere with 0.

(Effects of the Invention) As described above, according to the present invention, since the magnetic tape is pressed against the control head by the pad, the magnetic tape can stably contact the control head, and the magnetic tape can be operated at high speeds with large vibrations. Control signals and data signals can be read out stably even at high speeds, and the tension on the magnetic tape can be weakened, allowing higher speeds to be achieved while minimizing damage to the magnetic tape.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a magnetic recording and reproducing apparatus according to the present invention, FIGS. 2(a) and (b) are perspective views during loading and unloading of a magnetic tape in a pad assay according to the present invention, and FIG. 3 is a conventional FIG. 2 is a configuration diagram of a magnetic recording/reproducing device. DESCRIPTION OF SYMBOLS 1... Pad assay, 2... Control head 3... Pinch roller, 4... Capstan shaft, 5.7... Tensigin control pin, 9... Rotating drum, 10... Magnetism tape, 11... pad holder,
12... Rotating shaft, 13... Felt. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa Figure 2 (o) (b) Figure 2 Name of the invention Magnetic recording and reproducing device 3 Relationship to the case of the person making the amendment Patent applicant address 2-chome Marunouchi, Chiyoda-ku, Tokyo 2 and 3 Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki 4, Agent address 2-3 Maruno Potter-chome, Chiyoda-ku, Tokyo (Contact information 03 (3213) 3421 Patent Department) 5° amendment Detailed description of the invention in the subject specification. 6. In the first line of page 2 of the statement of contents of the amendment, ``Figure 3'' was changed to ``Figure 3 is for example rNHK Home Video Technology JP published by Japan Broadcasting Corporation, 14
4, as shown in Figure 11-1. that's all

Claims (1)

[Claims] a rotating drum having a magnetic head and recording and reproducing information on the magnetic tape when loading the magnetic tape;
A drive running means for driving and running the magnetic tape, a tension applying means for applying tension to the magnetic tape, and a control head for recording and reading control signals or data signals by contacting the magnetic tape during loading of the magnetic tape. In magnetic recording and reproducing devices,
A magnetic recording/reproducing device characterized by being provided with a pad that presses a magnetic tape against a control head when loading the magnetic tape.