JP2001297556A - Magnetic tape cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic tape cassette which enables correctly to confirm of information relating to the magnetic tape cassette from outside. SOLUTION: The first information 54 is displayed in a flange 51 of a tape reel 50, a prescribed part 16 of a cassette case 10a is made transparent by a level that the first information 54 is viewed, and the second information 20 is displayed in the prescribed part 16. When being observed from the right direction, the first information 54 and the second information 20 are placed so that the third information obtained by composing the first information 54 and the second information 20 may become visual.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape cassette, and more particularly to a magnetic tape cassette characterized by a tape reel and a cassette case for accommodating the tape reel.

[0002]

2. Description of the Related Art In general, in audio equipment and video equipment, a magnetic tape cassette for recording and reproducing data by holding a magnetic tape wound around a pair of tape reels movably in a cassette case is often used. . FIG. 3 is an exploded perspective view of a VHS magnetic tape cassette which is an example of the magnetic tape cassette. The magnetic tape cassette 40
An upper cassette half 41 and a lower cassette half 42 having a configuration in which a peripheral wall is erected on a flat plate are provided. The upper cassette half 41 has a magnetic tape T wound around a tape reel 50.
The window 46 is provided so that the winding amount can be confirmed. The window 46 is configured by attaching a transparent window member so as to close a window opening provided in the upper cassette half 41.

Each of the pair of tape reels 50 has a hub 53 around which a magnetic tape T is wound around its outer periphery,
3 has an upper flange 51 and a lower flange 52 attached to the upper and lower ends. The tape reel 50 is rotatably mounted on the lower cassette half 42 such that the magnetic tape T is bridged between a pair of tape guides 44 provided at the front end of the lower cassette half 42. A magnetic tape T is exposed at the front end of the lower cassette half 42. A guard panel 4 serving as a lid member covers the magnetic tape T.
5 is rotatably attached to the upper cassette half 41.

[0004] On the upper flange 51 of the tape reel 50,
A scale 54 is provided for checking the winding amount (remaining amount) of the magnetic tape wound around the hub 53. Upper flange 5
1 is made of a transparent resin. This tape reel 50
Is stored in the cassette case, the scale 54 of the upper flange 51 is compared with the magnetic tape T wound around the hub 53 through the window 46 provided in the upper cassette half 41, so that the hub 53 Of the magnetic tape T can be confirmed.

[0005]

In the above-described conventional magnetic tape cassette 40, when the tape reel 50 is viewed from directly above, the scale 54 of the upper flange 51 and the magnetic tape T wound around the hub 53 are connected. By comparison, the winding amount of the magnetic tape T at the hub 53 can be accurately confirmed. Tape reel 5
When 0 is viewed obliquely, the amount of winding of the magnetic tape T around the hub 53 cannot be determined accurately. However, the user sometimes thinks that the user has unintentionally viewed the tape reel 50 obliquely and grasped the winding amount of the magnetic tape T around the hub 53.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a magnetic tape cassette capable of correctly confirming information on the magnetic tape cassette from the outside.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic tape having a hub around which a magnetic tape is wound, a flange connected to the hub, and a tape reel housed in a cassette case. In the cassette, the first information is displayed on the flange, a predetermined portion of the cassette case is made transparent so that the first information can be seen, and the second information is displayed at the predetermined portion, so that the correct direction is displayed. The first information and the second information are arranged such that, when viewed, third information obtained by combining the first information and the second information becomes visible. This is achieved by a magnetic tape cassette.

As the first information, for example, a scale can be provided on the upper flange so that the winding amount of the magnetic tape on the hub can be accurately confirmed when the tape reel is viewed from directly above. As the second information, for example, when a tape reel is viewed from directly above through a transparent predetermined portion of the cassette case, a scale is provided at the predetermined position so that the winding amount of the magnetic tape at the hub can be accurately confirmed. Can be kept. In the magnetic tape cassette as described above, when the first information and the second information are viewed from the correct direction, the third information such as notifying the user that the user is watching from the correct direction is visible. Becomes Therefore, information on the magnetic tape cassette can be correctly confirmed from outside.

Recently, mainly for the purpose of improving the design, housings of electronic devices and the like have been made transparent, that is, so-called skeletons. When the cassette case or the like in the magnetic tape cassette of the present invention is made transparent, the degree of freedom in arranging the second information is expanded, so that various information can be displayed outside. In this specification, "transparent" means that the inside of the magnetic tape cassette is visible,
It may be achromatic or chromatic.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In addition, about the member etc. already demonstrated, description is simplified or abbreviate | omitted by attaching | subjecting the same code | symbol or an equivalent code | symbol in a figure. FIG. 1 is a schematic perspective view showing a magnetic tape cassette (here, a VHS magnetic tape cassette) according to an embodiment of the present invention. The magnetic tape cassette 10 includes a cassette case 10a formed by combining an upper cassette half 11 and a lower cassette half 12, which are transparent resin molded bodies. A guard panel 15 made of the same transparent resin as the cassette case 10a is rotatably attached to the front end side of the cassette case.

The upper cassette half 11 is provided with a window 16 having good transparency. The window portion 16 has higher transparency than portions other than the window portion 16. The window 16 is provided with scales (case scales) 20 having the same shape and the same interval as the scales 54 provided on the transparent upper flange 51 of the tape reel 50.

The scales 54 of the upper flange 51 of the tape reel 50 are arranged in order from the inner peripheral side to the outer peripheral side of the upper flange 51, the first mark 54 a to the fifth mark 54 e.
Consists of Similarly, the case scale 20 includes a first mark 20a to a fifth mark 20e. The case scale 20 allows the amount of winding of the magnetic tape T around the hub 53 to be accurately confirmed when the tape reel 50 is viewed from directly above via the window portion 16.

As shown in FIG. 1, when the magnetic tape cassette 10 is viewed obliquely, that is, when the tape reel 50 is viewed obliquely through the window 16, the winding amount of the magnetic tape T indicated by the scale 50 and the case scale. 20 is different from the winding amount of the magnetic tape T. Here, the outermost periphery of the magnetic tape T on one tape reel 50 overlaps the inner peripheral end of the second mark 54b according to the scale 54,
According to the case scale 20, it is arranged at the center of the second mark 20b.

However, as shown in FIG. 2, when the magnetic tape cassette 10 is viewed from directly above, that is, when the tape reel 50 is viewed from directly above through the window 16, the scale 50
Is equal to the winding amount of the magnetic tape T indicated by the case scale 20.

The magnetic tape cassette 1 having the above configuration
According to 0, when the magnetic tape cassette 10 is viewed from directly above, the winding amount of the magnetic tape T indicated by the scale 54 matches the winding amount of the magnetic tape T indicated by the case scale 20. That is, the user can be informed that the user is looking from the right direction by this coincidence. Therefore, the user looks at the tape reel 50 through the window 16 while keeping the winding amount of the magnetic tape T indicated by the scale 54 and the winding amount of the magnetic tape T indicated by the case scale 20 coincident with each other. The winding amount of the magnetic tape T on the outer periphery can be accurately grasped.

The present invention is not limited to the above-described embodiment, and can be appropriately modified and improved.
The cassette case 10a may be a conventional non-transparent type. The present invention is naturally applicable to magnetic tape cassettes (for example, DVC and DAT cassettes) other than the VHS magnetic tape cassette.

[0017]

As described above, according to the present invention, when the first information and the second information are viewed from the correct direction, the user is notified that he / she is watching from the correct direction. Of the magnetic tape cassette can be correctly confirmed from the outside.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a VHS magnetic tape cassette according to an embodiment of the present invention.

FIG. 2 is a plan view of the VHS magnetic tape cassette of FIG. 1;

FIG. 3 is an exploded perspective view showing a conventional VHS magnetic tape cassette.

[Explanation of symbols]

 Reference Signs List 10 magnetic tape cassette 10a cassette case 11 upper cassette half 12 lower cassette half 16 window 20 case scale (second information) 50 tape reel 51 upper flange 53 hub 54 scale (first information) T magnetic tape

Claims (1)

[Claims] 1. A magnetic tape cassette having a hub on which a magnetic tape is wound and a flange connected to the hub, and a tape reel housed in a cassette case, wherein the first information is stored in the flange. A predetermined portion of the cassette case is made transparent to the extent that the first information is displayed, and the second information is displayed at the predetermined portion, so that the first information and the A magnetic tape cassette, wherein the first information and the second information are arranged so that third information obtained by combining the second information is visible.