JPH0458888U - - Google Patents
Info
- Publication number
- JPH0458888U JPH0458888U JP10133190U JP10133190U JPH0458888U JP H0458888 U JPH0458888 U JP H0458888U JP 10133190 U JP10133190 U JP 10133190U JP 10133190 U JP10133190 U JP 10133190U JP H0458888 U JPH0458888 U JP H0458888U
- Authority
- JP
- Japan
- Prior art keywords
- tape
- magnetic tape
- cassette
- reel hub
- cassette case
- 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
- 239000000463 material Substances 0.000 claims 3
- 238000004804 winding Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図から第５図はこの考案の一実施例にかか
るテープカセツトのテープ残量検出装置、第１図
が正断面図、第２図が一部品の拡大平面図、第３
図がテープカセツトの底面図、第４図が模式正面
図、第５図が第４図と対応する信号特性図、第６
図および第７図がこの考案の他の実施例にかかる
テープカセツトのテープ残量検出装置、第６図が
模式正面図、第７図が第６図と対応した信号特性
図である。
１３……テープカセツト、１９……カセツトケ
ース、２０，２１……リール、２２，２３……透
明窓、２４……ハブ、２６……ライト、２７……
ラインセンサ、３０……磁気テープ。
1 to 5 show a tape remaining amount detecting device for a tape cassette according to an embodiment of this invention, FIG. 1 is a front sectional view, FIG. 2 is an enlarged plan view of one part, and FIG.
The figure is a bottom view of the tape cassette, Figure 4 is a schematic front view, Figure 5 is a signal characteristic diagram corresponding to Figure 4, and Figure 6 is a diagram of signal characteristics corresponding to Figure 4.
7 and 7 are a tape remaining amount detecting device for a tape cassette according to another embodiment of the present invention, FIG. 6 is a schematic front view, and FIG. 7 is a signal characteristic diagram corresponding to FIG. 6. 13... Tape cassette, 19... Cassette case, 20, 21... Reel, 22, 23... Transparent window, 24... Hub, 26... Light, 27...
Line sensor, 30...magnetic tape.
Claims (1)
間に巻回して収納されたテープカセツトを記録再
生装置のキヤビネツト内に装着し、磁気テープを
リール間で走行させて記録、再生を行う磁気テー
プ記録再生装置において、 前記カセツトケースの少なくとも一方のリール
ハブを透光性材料または磁気テープ部の反射率と
異なる反射率を有する反射性材料から構成すると
ともに、このリールハブの略外周端部位置からテ
ープ最大巻径位置までの長さを少なくとも有する
窓部を前記カセツトケースに形成し、この窓部に
臨んで前記キヤビネツト内に磁気テープのテープ
巻回量とリールハブ径とを光学的に検出するテー
プ量検知器を設けたことを特徴とするテープカセ
ツトのテープ残量検出装置。[Scope of Claim for Utility Model Registration] A tape cassette containing a magnetic tape wound between a pair of reels in a cassette case is installed in the cabinet of a recording/reproducing device, and the magnetic tape is run between the reels to record. In a magnetic tape recording and reproducing device that performs reproduction, at least one reel hub of the cassette case is made of a light-transmitting material or a reflective material having a reflectance different from that of the magnetic tape portion, and a substantially outer peripheral end of the reel hub is made of a transparent material or a reflective material having a reflectance different from that of the magnetic tape portion. A window portion having at least a length from the tape position to the tape maximum winding diameter position is formed in the cassette case, and the tape winding amount and reel hub diameter of the magnetic tape are optically measured in the cabinet facing the window portion. A tape remaining amount detection device for a tape cassette, characterized in that a tape amount detector is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10133190U JPH0458888U (en) | 1990-09-27 | 1990-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10133190U JPH0458888U (en) | 1990-09-27 | 1990-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0458888U true JPH0458888U (en) | 1992-05-20 |
Family
ID=31844694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10133190U Pending JPH0458888U (en) | 1990-09-27 | 1990-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0458888U (en) |
-
1990
- 1990-09-27 JP JP10133190U patent/JPH0458888U/ja active Pending
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