JP2001195862A - Magnetic tape type recording medium which erases contents when once reproduced - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a magnetic tape type recording medium, such as a video tape, which is 'reproducible just once' not in an intrinsic general use method of 'reproducible any number of times'. SOLUTION: A permanent magnet is inserted to the segment (the position in contact with a magnetic tape) just before a take-up side tape reel within a tape cassette for the magnetic tape type recording medium already recorded with the contents (for example, the video tape or the like). The magnetic tape which is reproduced with the contents by a reproducing device and is returned to the inside of the tape cassette is immediately erased of the contents by the permanent magnet existing just before the take-up side tape reel. The [magnetic tape type recording medium which is reproducible just once] (erases the contents once reproduced") is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium using a magnetic tape (for example, a video tape or a cassette tape).
On the practical use of

[0002]

2. Description of the Related Art Generally, a magnetic tape type recording medium such as a video tape is manufactured and used for the purpose of storing images and sounds and leaving them so that they can be reproduced at any time.

[0003]

SUMMARY OF THE INVENTION The present invention relates to a magnetic tape type recording medium such as a video tape, which is not an original general use of "can be reproduced any number of times" but a magnetic tape of "can be reproduced only once". It aims at producing a tape type recording medium.

[0004]

SUMMARY OF THE INVENTION Among the recording media (video tapes, cassette tapes, etc.) using a magnetic tape, a general video tape will be described below as an example. (The structure and concept for manufacturing are the same for other types of magnetic tape-type recording media.) As shown in FIG. 1, there are two tape reels inside the tape cassette, and normal reproduction is performed in the forward direction. In the case, the left side is used as a sending side, the right side is used as a winding side, and the head of the VCR reads information recorded on the tape in an intermediate portion from the left reel to the right reel, Play the video. Here, a normal video tape on which the contents have already been recorded is compared with the 4 shown in FIG.
(A position immediately before the take-up side tape reel and in contact with the magnetic tape). (Or
A method may be used in which parts such as a tape roller included in a normal video tape are replaced with permanent magnet parts. Then, the content is played back by the playback device (video deck), and the magnetic tape that has returned to the inside of the tape cassette is immediately erased by the permanent magnet immediately before the take-up reel, and "play once only" is performed. A video tape that cannot be realized. The above is the contents of claim 1. It should be noted that a tape that normally uses both sides (plays back in both directions), such as an audio cassette tape, can only be used in one direction when using the present invention.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a magnetic tape type recording medium on which contents have already been recorded, a permanent magnet is inserted and used at a position 4 shown in FIG.

[0006]

According to the manufacturing method described above, a magnetic tape-type recording medium such as a video tape can be used as a recording medium "the content disappears once reproduced".

[Brief description of the drawings]

Fig. 1 Production of a magnetic tape type recording medium that loses its contents once reproduced

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cassette outer box 2 Tape reel 3 Magnetic tape 4 Permanent magnet

Claims (1)

[Claims] 1. A recording medium (for example, a video tape or a cassette tape) using a magnetic tape, in which a permanent magnet is inserted in a tape cassette immediately before a take-up side tape reel as shown in FIG.