JPH01109882U

JPH01109882U -

Info

Publication number: JPH01109882U
Application number: JP501588U
Authority: JP
Priority date: 1988-01-19
Filing date: 1988-01-19
Publication date: 1989-07-25

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示すもので
あつて、第１図はＤＡＴ用テープカセツトの下ハ
ーフ上に配される滑性シートの平面図、第２図は
第１図の―線断面図、第３図は第１図の―
線断面図、第４図はテープ巻き径等との関係を
示すための同滑性シートの平面図である。第５図
〜第１１図は従来例を示すものであつて第５図は
ＤＡＴ用テープカセツトの表面側の斜視図、第６
図は同裏面側の斜視図、第７図は同テープカセツ
トの下ハーフ側の平面図、第８図は第７図の―
線に沿う同テープカセツトの断面図、第９図は
同テープカセツトの下ハーフ上に配される滑性シ
ートの平面図、第１０図は第９図の―線断面
図、第１１図は第９図の―線断面図であ
る。なお、図面に示す符号において、１……テープ
カセツト、２……磁気テープ、３，４……リール
ハブ、５ａ……上ハーフ、５ｂ……下ハーフ、６
……リツド、８，９，３３，３４……リール軸挿
入孔、３５，３６，３８，３９，４０，４１……
膨出部、３７……テープ対向面、４５……滑性シ
ートである。 1 to 4 show an embodiment of the present invention, in which FIG. 1 is a plan view of a slippery sheet placed on the lower half of a DAT tape cassette, and FIG. Figure 3 is a cross-sectional view of Figure 1.
A line sectional view and FIG. 4 are plan views of the same slippery sheet to show the relationship with the tape winding diameter and the like. 5 to 11 show conventional examples, in which FIG. 5 is a perspective view of the front side of a DAT tape cassette, and FIG.
The figure is a perspective view of the back side, Figure 7 is a plan view of the lower half side of the tape cassette, and Figure 8 is the same as in Figure 7.
9 is a plan view of the slippery sheet disposed on the lower half of the tape cassette, FIG. 10 is a sectional view taken along the line -- in FIG. 9, and FIG. 9 is a sectional view taken along the line -- in FIG. 9. In addition, in the symbols shown in the drawings, 1... tape cassette, 2... magnetic tape, 3, 4... reel hub, 5a... upper half, 5b... lower half, 6...
... Lid, 8, 9, 33, 34 ... Reel shaft insertion hole, 35, 36, 38, 39, 40, 41 ...
Bulging portion, 37... tape opposing surface, 45... slippery sheet.

Claims

[Claims for Utility Model Registration] A tape cassette in which a reel hub around which a magnetic tape is wound and a slippery sheet disposed opposite to the magnetic tape are provided in a cassette main body, the slippery sheet comprising: (a) it is made of an opaque material; (b) at least two bulges extending in the radial direction of the wound magnetic tape are formed around each of the pair of reel shaft insertion holes; (c) at least in the region between the pair of reel shaft insertion holes and at least one location along each periphery of the reel shaft insertion holes; A bulge concentric with the reel shaft insertion hole is formed so as to be continuous between the radial bulges. (d) A bulge connected to the radial bulge along a line connecting the pair of reel shaft insertion holes is tapered toward the tip, and has a rounded tip. A tape cassette characterized in that it has a shape.