JPS639894Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette for storing, for example, a 1/4 inch wide magnetic tape used in a micro-sized video tape recorder (hereinafter referred to as "VTR").

Traditionally, tape cassettes used in ultra-compact and lightweight VTRs to store 1/4-inch wide magnetic tape have been designed to be smaller and lighter, just like the VTR itself. That is, the tape cassette 100 shown in the perspective view of FIG. 1 is similar to a compact cassette for audio, and as shown in FIG. This is then sandwiched between an upper sliding sheet 6 and a lower sliding sheet 7, which are mainly composed of carbon or the like and have a small coefficient of friction, and this sandwiched material is then sandwiched between a case lid part 2 and a case bottom part 5 made of a polymeric material. It had a structure in which it was stored in a case consisting of. And supply
The amount of magnetic tape 3 wound around the take-up reels 4-1 and 4-2 is checked through the transparent window 1 provided in the center of the case lid 2 and the rectangular hole 9 provided in the center of the upper sliding sheet 6. Ta.

By the way, in the above-mentioned tape cassette 100, the color of the magnetic tape 3 coated with iron oxide and the color of the vertically sliding sheets 6 and 7 mainly composed of carbon are very similar, and therefore the above-mentioned transparent window 1 and rectangular Supply/take-up reel 4- through hole 9
It has a drawback that it is difficult to visually confirm the amount of magnetic tape 3 wound around 1, 4-2. Therefore, due to this drawback, supply and
The amount of magnetic tape 3 wound on the take-up reels 4-1 and 4-2 was misjudged, and as a result, the magnetic tape 3 wound on the supply reel 4-1 ran out during recording, such as when recording while away from home, resulting in scheduled information. Occasionally, accidents occurred where recordings were missed.

An object of the present invention is to provide a tape cassette which can eliminate such conventional drawbacks and prevent the occurrence of misunderstanding of the amount of magnetic tape wound on a supply take-up reel when visually inspecting the tape cassette. It is in.

According to the present invention, a rectangular thin colored sheet that produces a color difference with the magnetic tape is attached to the center of the bottom of the case, and the vertical sliding sheet that sandwiches the supply/take-up reel wound with the magnetic tape is attached to the center of the case. By providing a rectangular hole with the same size as the thin and thick color sheet, and by creating a positional relationship in which a part of the magnetic tape wound on the supply/take-up reel and a part of the thin and thick color sheet overlap each other, the case It is possible to provide a tape cassette in which the amount of magnetic tape wound on the supply/take-up reel can be easily visually confirmed through a transparent window provided at the center of the lid.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments.

FIG. 3 is a diagram illustrating the components of the embodiment of the present invention. In the figure, 8 is a thin colored sheet that produces a color difference from the magnetic tape 3, and 10 is a rectangular hole provided in the lower sliding sheet 7. FIG. 4 is a sectional view of the vicinity of the transparent window 1 of the tape cassette of the present invention. FIG. 5 is a view taken along the line A--A in FIG. 4.

As shown in FIGS. 3 and 4, the magnetic tape 3
is wound on supply and take-up reels 4-1, 4-2, which are sandwiched between upper and lower slide sheets 6 and 7 with rectangular holes 9 and 10 in the center. Furthermore, this sandwiched thing has a case lid part 2 having a transparent window 1 in the center,
Case bottom 5 with a thin rectangular color sheet 8 attached to the center to create a color difference with the color of the magnetic tape.
It is housed in a case made up of.
That is, when assembled as described above, the rectangular hole 9 provided in the upper slide sheet 6, the rectangular hole 10 provided in the lower slide sheet 7, and the case bottom 5.
As shown in FIG. 4, the thin colored sheets 8 pasted on the case lid 2 are arranged in a line below the transparent window 1 provided in the center of the case lid 2. Then, as shown in FIG. 5, the supply/take-up reel 4
A part of the magnetic tape 3 wound around -1 and 4-2 sandwiches a lower sliding sheet 7 and overlaps a part of the thin color sheet 8. Because of this configuration, when the magnetic tape 3 wound on the supply/take-up reels 4-1 and 4-2 is visually observed through the transparent window 1, the color of the magnetic tape 3 and the thin color sheet 8 behind it can be easily seen. It is observed that there is an obvious color difference between the colors. That is, the amount of magnetic tape 3 wound on the supply/take-up reels 4-1, 4-2 can be known at a glance. Therefore, the tape cassette of the present invention eliminates the failure of image recording caused by misjudging the amount of magnetic tape 3 wound on the supply/take-up reels 4-1 and 4-2, which often occurs with conventional tape cassettes. There is no such thing as occurring.

Although the embodiments of the present invention have been described above, the main points of the present invention include the shape of the hole provided in the sliding sheet, its position, changing the thin color sheet to paint, or attaching the color sheet by a method other than adhesive. It is clear that various modifications may be made without departing from the above.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a tape cassette, Figure 2 is a diagram explaining the configuration of a conventional tape cassette, Figure 3 is a diagram explaining the configuration of an embodiment of the present invention, and Figure 4 is a diagram of the tape cassette of the present invention. A cross-sectional view near the transparent window of
FIG. 5 is a view taken along the line A-A in FIG. 4. In the figure, 100... tape cassette, 1...
... Transparent window, 2 ... Case lid, 3 ... Magnetic tape, 4-1 ... Supply reel, 4-2 ... Take-up reel, 5 ... Case bottom, 6 ... Upper sliding sheet,
7... Lower sliding sheet, 8... Thin colored sheet, 9
...Rectangular hole provided in the upper sliding sheet, 10...
A rectangular hole in the bottom slide sheet.

Claims (1)

[Claims for Utility Model Registration] Formed by a box body that can be divided into two parts, a lid part and a bottom part,
A tape cassette in which both the reels are pivotally mounted within the box body so as to enable movement of the tape stretched between the supply and take-up reels, a transparent window provided in the central part of the lid part through which the wrapped state can be visually observed; and a transparent window provided in the bottom part of the inner part of the box facing the transparent window, which is colored in a color that creates a color difference from the color of the tape. a pair of sliding sheets that sandwich both the reels so as to smooth the rotation of the reels; a portion of the tape wound around the reels and a portion of the color sheet overlap; and a hole provided in each of the pair of sliding sheets so that the color sheet can be visually observed through the transparent window at the position.