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A technology of cassette tapes and magnetic tapes, which is applied in the directions of instruments, packaging, auxiliary signal accessories, etc., can solve the problems of difficult mechanical characteristics and electromagnetic transformation characteristics of ultra-thin magnetic tapes, high electromagnetic transformation characteristics, and inability to obtain thinner magnetic tapes.
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Embodiment 1
[0036] Such as figure 1 As shown, the cassette tape BB of Embodiment 1 of the present invention is equivalent to the aforementioned existing cassette tape AA ( Figure 5 ) are added light-shielding materials a to g in the structure. That is, the magnetic tape cassette BB is provided with at least one light-shielding material a~g on one or both positions of the sensing optical path L1 on the feeding side and the sensing optical path L2 on the winding side. The shading ratios of the exit 3 and the tape-side light exit 4 are reduced by 50-55%, and light-shielding materials a to g can be provided on the light paths L1 and L2. The physical properties (light transmittance), shape, color, etc. of the light-shielding materials a to g are determined according to needs.
Embodiment 2
[0038] Such as figure 2 Shown, the cassette tape CC of embodiment 2 of the present invention is in the aforementioned existing cassette tape AA ( Figure 5 In the structure of ), the light transmittance of the tape spacer 7 and the front cover locking plate 8 is changed to make the tape spacer h and the front cover locking plate i. Light exit on the reel side of the cover locking plate i.
[0039] That is, if figure 2 As shown, by changing the material or color of the tape spacer 7 and the front cover locking plate 8 arranged at any position in the sensing optical path L1 on the feeding side and the sensing optical path L2 on the winding side, the magnetic tape cassette CC makes it The light transmittance is reduced by 50-55%, and the tape gasket h and the front cover locking plate i can be inserted in each optical path L1, L2. The physical properties (light transmittance), shape and color of the tape spacer h and the front cover locking plate i are determined according to...
Embodiment 3
[0041] Such as image 3 Shown, the cassette tape DD of embodiment 3 of the present invention, its structure is by changing aforementioned existing cassette tape AA ( Figure 5 ) in the structure of the box upper cover 1, the box lower cover 2, the material or color of the structural parts j~r on the sensor optical path L1 on the feeding side and the sensing optical path L2 on the tape side, and change its light transmission Ratio, so that the light transmittance of the sensor outlet 3 on the feeding side and the light outlet 4 on the winding side are reduced by 50-55%.
[0042] That is, the structural parts j~r are auxiliary materials and outer walls of the internal structural parts of the magnetic tape cassette, and in order to ensure the sensing optical paths L1, L2, gaps are provided on the aforementioned structural parts j~r. Here, one or two or more notches on any one side of the structural members j-m on the feeding side and the structural members n-r on the take-up side...
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Abstract
Description
Claims
Application Information
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