JPS63200289U - - Google Patents
Info
- Publication number
- JPS63200289U JPS63200289U JP9060987U JP9060987U JPS63200289U JP S63200289 U JPS63200289 U JP S63200289U JP 9060987 U JP9060987 U JP 9060987U JP 9060987 U JP9060987 U JP 9060987U JP S63200289 U JPS63200289 U JP S63200289U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic tape
- light
- tape
- openings
- transparent portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims 1
- 238000002834 transmittance Methods 0.000 claims 1
Description
第１図は本考案になるテープカセツトの一実施
例の要部拡大図、第２図は上ハーフ１を除去した
本考案になるテープカセツトの一実施例の平面図
、第３図ａ，ｂは本考案になるテープカセツトの
側面部分断面図、第４図はテープカセツトの外観
斜視図、第５図は上ハーフ１を除去したテープカ
セツトの平面図である。
２Ａ，２Ｂ……側壁、６……磁気テープ、９…
…発光素子、１１……第１の受光素子、１２……
第２の受光素子、１３……第１の開口、１４……
第２の開口、１８……第１の光線、１９……第２
の光線、２４……透明部材、２５……ルーバー。
Fig. 1 is an enlarged view of essential parts of an embodiment of the tape cassette of the present invention, Fig. 2 is a plan view of an embodiment of the tape cassette of the present invention with the upper half 1 removed, and Figs. 3 a and b. 4 is an external perspective view of the tape cassette, and FIG. 5 is a plan view of the tape cassette with the upper half 1 removed. 2A, 2B...Side wall, 6...Magnetic tape, 9...
...Light emitting element, 11...First light receiving element, 12...
Second light receiving element, 13...First aperture, 14...
second aperture, 18...first ray, 19...second
ray of light, 24...transparent member, 25...louver.
Claims (1)
プの通常走行時、前記装置に設けられた発光素子
からの第１及び第２の光線は磁気テープの不透明
部分に遮られテープカセツトの側壁に設けられた
第１及び第２の開口を介してテープ終端検出機構
を作動する前記装置に設けられた第１及び第２の
受光素子に到達せず、また磁気テープが順方向に
走行して磁気テープの第１の透明部分が引き出さ
れた時、前記第１の光線は前記第１の透明部分、
前記第１の開口を夫々介して前記第１の受光素子
に到達し、さらに磁気テープが逆方向に走行して
磁気テープの第２の透明部分が引き出された時、
前記第２の光線は磁気テープの第２の透明部分、
前記第２の開口を夫々介して前記第２の受光素子
に到達するように構成されたテープカセツトであ
つて、前記第１及び前記第２の開口に入射角によ
つて光の透過率が異なる部材を設けることにより
、磁気テープの通常走行時、前記第１及び前記第
２の光線以外の散乱光線が前記第１あるいは前記
第２の開口を介して前記第１あるいは前記第２の
受光素子に到達しないようにしたことを特徴とす
るテープカセツト。 When the magnetic tape is installed in a recording and/or reproducing device, and the magnetic tape is normally running, the first and second light beams from the light emitting elements provided in the device are blocked by the opaque portion of the magnetic tape, and the light emitting device provided on the side wall of the tape cassette is blocked by the opaque portion of the magnetic tape. The magnetic tape does not reach the first and second light receiving elements provided in the device that operates the tape end detection mechanism through the first and second openings, and the magnetic tape runs in the forward direction. When the first transparent portion is drawn out, the first light beam is directed to the first transparent portion;
When the magnetic tape reaches the first light-receiving element through each of the first openings, and the magnetic tape further runs in the opposite direction, the second transparent portion of the magnetic tape is pulled out;
the second light beam is directed to a second transparent portion of the magnetic tape;
The tape cassette is configured to reach the second light receiving element through the second openings, and the transmittance of light differs depending on the angle of incidence on the first and second openings. By providing the member, during normal running of the magnetic tape, scattered light beams other than the first and second light beams are directed to the first or second light receiving element through the first or second aperture. A tape cassette characterized by a tape cassette that is designed so that it does not reach the target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9060987U JPS63200289U (en) | 1987-06-12 | 1987-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9060987U JPS63200289U (en) | 1987-06-12 | 1987-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63200289U true JPS63200289U (en) | 1988-12-23 |
Family
ID=30950631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9060987U Pending JPS63200289U (en) | 1987-06-12 | 1987-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63200289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101982U (en) * | 1991-01-31 | 1992-09-02 | 日本ビクター株式会社 | tape cassette |
-
1987
- 1987-06-12 JP JP9060987U patent/JPS63200289U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101982U (en) * | 1991-01-31 | 1992-09-02 | 日本ビクター株式会社 | tape cassette |
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