JP3160938B2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus provided with a cleaning means for removing dirt and dust adhering to a fixed head for recording, reproducing, erasing and monitoring a sound or a synchronization signal on a magnetic tape.

[0002]

2. Description of the Related Art In recent years, magnetic recording / reproducing apparatuses (hereinafter referred to as VTRs)
) Is widely used from consumer use to business use and broadcast use. In particular, a camera-integrated VTR that is integrated with an imaging device and a portable VTR that is used together with it are convenient to carry, so there are opportunities for outdoor use such as news gathering for broadcasting and travel and recreation for home use. Many.

FIG. 3 shows the appearance of a conventional camera-integrated VTR. A cassette 2 of magnetic tape is inserted into the main body 1 of the VTR from the mounting opening A and mounted.

FIG. 4 shows a magnetic tape traveling system of a conventional camera-integrated VTR. The magnetic tape 5 exits from the reel 11 of the cassette 2, is driven by the capstan 8 and the pinch rotor 9 while being guided by the plurality of guide pins 7, and runs while contacting the cylinder 4.

[0005]

In such a conventional magnetic recording / reproducing apparatus, especially in the case of outdoor use, as shown in FIG. Attaches to cassette. Further, the powder enters the VTR main body from an opening such as the mounting port or a gap.

[0006] The powdery material such as dust and garbage is
As shown in FIG. 4B, the magnetic tape is carried inside the traveling system. Most of these are removed at the guide posts, the fixed head 6 and other contact parts, but gradually accumulate on the fixed head 6.

As a result, there is a problem that recording loss and clogging are incomplete due to occurrence of spacing loss and clogging.

An object of the present invention is to provide a magnetic recording / reproducing apparatus provided with a cleaning device for removing adhering dust, dust and the like.

[0009]

According to the present invention, there is provided a magnetic recording / reproducing apparatus having a fixed head for recording and reproducing signals on and from a magnetic tape, wherein the fixed head performs relative movement in the longitudinal direction. The magnetic recording / reproducing apparatus includes a cleaning device in which a cleaning member removes deposits on the surface of the fixed head.

[0010]

According to the present invention, the cleaning member moves the fixed head surface in the longitudinal direction to remove the deposits on the surface, and synchronizes the operation of the cleaning device with the operation of attaching the magnetic tape to the traveling system. Thus, the head is cleaned each time the magnetic tape is mounted.

[0011]

【Example】

(Embodiment 1) Hereinafter, a magnetic recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to FIG.

FIG. 1 shows a configuration of a peripheral portion of a fixed head in a magnetic recording / reproducing apparatus according to an embodiment of the present invention. In the figure,
The base 12 holding the fixed head 6 is attached to a holding base 13 holding the fixed head 6 with screws 14. A support member 16 having at least one screw portion 15 is rotatably supported by the holding table 13, and a moving member having a cleaning member 17 engaged with the screw portion 15 and partially contacting the fixed head 6. 18 are provided integrally.

A gear 19 is provided at one end of the support shaft 16. The operation in the above configuration will be described.

FIG. 2 is a view of FIG. 1 as viewed from above, and a rack 20 is provided at a leading portion of a base 10 ′ on which the magnetic tape 5 is mounted on a traveling system by a guide post 7. ing. When the magnetic tape 5 is mounted on the traveling system, the base 10 ′ moves in the direction indicated by the dashed arrow, and the cleaning member 17 moves in the direction indicated by the dashed arrow by the rotation of the gear portion 19, so that the fixed head 6 contacts the magnetic tape 5. Move to a more off position.

In the reverse operation, the cleaning member 17 moves on the fixed head 6 after the magnetic tape 5 comes off the fixed head 6.

As is apparent from the above operation, the cleaning member 17 can clean the fixed head 6 in the longitudinal direction with the movement of the base 10 '. Cleaning can be reliably performed up to the gap.

As described above, according to the magnetic recording / reproducing apparatus of the embodiment of the present invention, the cleaning member which performs relative movement in the longitudinal direction of the fixed head in conjunction with the mounting operation of the magnetic tape is provided. The magnetic recording / reproducing apparatus is provided with a cleaning device that cleans the head surface while sliding on the head surface before contacting the magnetic recording / reproducing apparatus, thereby obtaining a magnetic recording / reproducing apparatus free from incomplete operation due to accumulation of dust and dust.

Further, since the cleaning device is provided integrally with the mounting portion of the fixed head, the cleaning device can be formed as a unit, and the fixed head and the cleaning member can be accurately maintained and managed.

In this embodiment, the movement of the cleaning member is driven by a screw. However, another driving method (for example, a distortion element or a cam) may be used.

[0020]

As is clear from the above embodiments, the present invention is provided with a cleaning member which performs a relative movement in the longitudinal direction of the fixed head, so that the magnetic tape can adhere to the fixed head surface before and after the magnetic tape comes into contact with the fixed head. A magnetic recording / reproducing apparatus free of dust and free from incomplete operation can be obtained. In addition, by linking with the mounting operation of the magnetic tape, the surface of the fixed head can be reliably cleaned every time the magnetic tape is mounted.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a cleaning device in a magnetic recording and reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a top view showing a configuration of a cleaning device in the magnetic recording and reproducing apparatus according to one embodiment of the present invention.

FIG. 3 is a perspective view showing the configuration of a camera-integrated VTR.

FIG. 4 is a plan view showing a configuration around a fixed head in a conventional magnetic recording / reproducing apparatus.

[Explanation of symbols]

6 Fixed head 17 Cleaning member (Cleaning device that moves relatively in the fixed head longitudinal direction)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 5/41 G11B 5/40

Claims (2)

(57) [Claims] 1. A cleaning device for recording a voice or a synchronization signal on a magnetic tape, or for performing a relative movement in a direction intersecting the running direction of the magnetic tape with respect to a fixed head for erasing and monitoring the same. Magnetic recording and reproducing apparatus. 2. A magnetic recording / reproducing apparatus wherein a cleaning device is provided integrally with a fixed head support member.