JPH04105237A - Transducer mechanism - Google Patents

Abstract

PURPOSE:To prevent static electricity occurring and recording/reproduction deteriorating by providing a metallic transducer by which the static electricity can be prevented occurring at this side of a machine reel. CONSTITUTION:A metallic transducer main body 1 is provided with a center screw hole 2 and an air hole 3. A magnetic tape is wound across the machine reel passing the side plane of the metallic transducer main body 1. The magnetic tape passes the side plane of the metallic transducer main body 1 floating slightly by the pressure of the air hole 3 during passing the side plane of the metallic transducer main body 1. At this time, no static electricity is generated because the metallic transducer is made of metal even when the pressure of the air hole 3 is decreased while such operation is performed, and the magnetic tape comes in contact with the side plane of the metallic transducer main body 1. Thereby, it is possible to prevent the static electricity which attracts dust occurring even when the magnetic tape comes in contact with the side plane of the transducer, and to prevent the recording/reproduction deteriorating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transducer mechanism, and particularly to a transducer mechanism used in a magnetic tape device.

[Conventional technology]

Conventionally, this type of transducer mechanism has had a structure in which a transducer body 4 has a central screw hole 2 and an air hole 3, as shown in FIG.

During forward running, the magnetic tape passes through the head section and is then wound around the side surface of the transducer body 4 in the above-described structure onto a machine reel that takes in the magnetic tape. While passing the side surface of the transducer body 4, the magnetic tape passes through the side surface of the transducer body 4 while floating slightly due to the pressure of the air hole 3. Further, during reverse running, the magnetic tape fed out from the machine reel moves along the side surface of the transducer body 4 toward the head section. Similarly, while passing through the side surface of the transducer body 4, the magnetic tape passes through the side surface of the transducer body 4 while floating slightly due to the pressure of the air hole 3.

[Problem to be solved by the invention]

In the conventional transducer mechanism described above, the material of the transducer body is ceramic, so the magnetic tape travels slightly floating on the side of the transducer body, but it comes into contact with it in places where air pressure is weak. When this occurs, static electricity is generated, attracting dust and causing deterioration in recording and reproduction.

[Means to solve the problem]

The transducer mechanism of the present invention includes a metal transducer that does not generate static electricity.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1(a) and 1(b) are a plan view and a front view of an embodiment of the present invention. In FIGS. 1(a) and 1(b), one embodiment of the present invention has a central screw hole 2 in a metal transducer body 1.
The structure has air holes 3 and 3. During forward running, the magnetic tape passes through the head section, passes through the side surface of the metal transducer main body 1 in the above structure, and is wound onto a machine reel that takes in the magnetic tape. While passing the side surface of the metal transducer body 1, the magnetic tape passes through the side surface of the metal transducer body 1 while floating slightly due to the pressure of the air hole 3. Further, during reverse running, the magnetic tape fed out from the machine reel passes through the side surface of the metal transducer body 1 and moves to the head section. Similarly, while passing through the side surface of the metal transducer body 1, the magnetic tape passes through the side surface of the metal transducer body 1 while floating slightly due to the pressure of the air hole 3.

During the above operation, the pressure in the air hole 3 becomes weaker, and even if the magnetic tape comes into contact with the side surface of the metal transducer body 1, static electricity is not generated because the metal transducer is made of metal rather than ceramic.

〔Effect of the invention〕

As explained above, the present invention eliminates the generation of static electricity, which is a factor that attracts dust even when the magnetic tape and the side of the transducer come into contact with each other, by making the transducer body metal, thereby improving the reliability of recording and playback. This has the effect of improving.

[Brief explanation of the drawing]

FIGS. 1(a) and (b) are a plan view and a front view showing an embodiment of the present invention, and FIGS. 2(a) and (b) are a plan view and a front view of a conventional transducer mechanism. . 1...Metal transducer body, 2...Central screw hole, 3...Air hole.

Claims (1)

[Claims] A transducer mechanism, in a tape running system of a magnetic tape device, comprising a metal transducer that does not generate static electricity in front of a machine reel.