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Magnetic tape cassette

A tape cassette and magnetic tape technology, applied in the field of tape cassettes, can solve problems such as inability to take out the tape cassette, collisions, etc.

Inactive Publication Date: 2004-10-27
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] However, according to the above-mentioned structure, the cassette body will protrude in the length direction relative to the cover. The front end 28 of 12 will collide with the cassette loading entrance of hardware device and be blocked
And if it is loaded by force, in the worst case, the front end 28 and the outer cover 20 and the top cover 21 are stuck in the tape cassette loading port of the hardware device, causing the tape cassette 50 to be unable to be taken out from the hardware device.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] figure 1 Shown is the magnetic tape cassette of Example 1. The magnetic tape cassette 100 supports a pair of freely rotatable tape control reels on which the magnetic tape 47 is wound in the magnetic tape cassette body composed of the upper cassette body 2 and the lower cassette body 103 . The magnetic tape cassette 100 guides the magnetic tape 47 through the magnetic tape guide column 114 formed integrally with the lower case body 103 in order to make the magnetic tape 47 run on a prescribed position.

[0083] exist figure 2 presented in figure 1 A tape guide column 114 that is provided on the lower box body 103 of the. The cylindrical tape guide column 114 is integrally formed with the flat plate 110 of the lower case body 103 . The tape guide post 114 has a curved portion 130 that is in sliding contact with the magnetic tape 47, and the rear end side of the tape guide post 114 that is not in contact with the magnetic tape 47 (the side opposite to the magnetic ...

Embodiment 2

[0091] Figure 4 In Embodiment 2 of the present invention, when the window member is welded to the flat plate of the upper half case, the window is placed on the flat plate to cover the opening provided on the flat plate. The flat plate 204 of the upper half box body 202 is formed with a window support surface 235a at the peripheral edge portion of the opening. In addition, here, most of the side 235b connecting the flat inner surface and the window support surface 235a is formed as an inclined surface as an introduction surface, and on a part of the side 235b extending along the short side direction of the upper half box body 202, a Sandwich the window member and determine the correct position of the window member and perpendicular to the curved convex surface 235c of the inner face of the plate.

[0092] In addition, on the inner surface of the surrounding wall surface (rear end wall) 207 of the upper half box body 11 (the surface on one side of the inner space of the casse...

Embodiment 3

[0103] Figure 7 Shown is the lower half box body of Embodiment 3 of the present invention. The tape cassette 300 is freely rotatably supported by a pair of control reels 1 (the control reel on the right side of the figure is omitted) that wraps a tape (not shown) in a pair with the upper half box body (not shown). In the lower half box body 3 and constitute. The lower half box body 3 is integrally molded with synthetic resins such as ABS resin.

[0104] exist Figure 7 The lower right corner portion of the lower half box body 3 in the middle is provided with an ID identification plate 333 for identifying tape types and purposes. The ID identification plate 333 is arranged on the position surrounded by the side wall portion 12 and the partition edge 19 in the lower half box body 3 .

[0105] ID identification plate 333, such as Figure 8 As shown, with multiple ( Figure 8 There are 4) contacts 336a-336d. These contact points 336a-336d are exposed from openings (not sho...

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PUM

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Abstract

A magnetic tape cassette comprises a cassette case consisting of upper and lower cassette halves, in which a pair of tape reels (1) can freely rotate with a magnetic tape (47) wound on them. Tape guides (114) for guiding the magnetic tape (47) are formed integrally on the lower cassette half. The tape guides (114) include cylindrical parts having curves on which the magnetic tape (47) run. The curved portions are thicker than other portions of the cylindrical parts.

Description

technical field [0001] The present invention relates to a magnetic tape cassette such as a digital video cassette (DVC). Background technique [0002] Generally, in audio equipment and video equipment, a magnetic tape wound on a pair of control reels is operably held in a cassette body for recording and reproduction. [0003] Figure 12 It is an exploded perspective view of the DVC as a cassette. The cassette 50 has an upper half 2 and a lower half 3 with flat plates and surrounding walls, respectively. Combine the upper and lower half boxes 2 and 3 and fasten them with multiple screws. In the lower half box body 3, a pair of tape control reels 1 composed of an upper flange and a lower flange are welded to support a freely rotatable magnetic tape 47 in a wound state. [0004] On both sides of the opening 5 on the front end side (the inner side in the figure) of the lower half box body 3, tape guide posts 14 are provided. Each tape guide post 14 guides the magnetic tape 4...

Claims

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Application Information

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IPC IPC(8): G11B23/087
CPCG11B23/08757G11B23/08714G11B23/08785G11B23/087
Inventor 芦川辉男御守昭三平口和男内藤博幸
Owner FUJIFILM CORP
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