JPS62113484U - - Google Patents
Info
- Publication number
- JPS62113484U JPS62113484U JP20342285U JP20342285U JPS62113484U JP S62113484 U JPS62113484 U JP S62113484U JP 20342285 U JP20342285 U JP 20342285U JP 20342285 U JP20342285 U JP 20342285U JP S62113484 U JPS62113484 U JP S62113484U
- Authority
- JP
- Japan
- Prior art keywords
- videotape
- optical path
- detection optical
- cassette
- tape
- 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 description 9
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
第１図はこの考案を適用したビデオカセツトの
斜視図、第２図はビデオカセツトの上ケースを外
した状態の平面図、第３図は検出光路を示す断面
図、第４図は巻取り側検出光路に配置された光遮
断部材の断面図、第５図は供給側検出光路に配置
された光遮断部材の断面図、第６図はビデオカセ
ツトをビデオデツキに装填した作動状態を示す概
略図である。
１…カセツト本体、２…上ケース、３…下ケー
ス、４，５…リール収納室、６…巻取りリール、
７…供給リール、１７，１８…検出光路、２９，
３０…光遮断手段。
Figure 1 is a perspective view of a video cassette to which this invention is applied, Figure 2 is a plan view of the video cassette with the upper case removed, Figure 3 is a sectional view showing the detection optical path, and Figure 4 is the winding side. FIG. 5 is a sectional view of the light blocking member placed in the detection optical path, FIG. 5 is a sectional view of the light blocking member placed in the supply side detection optical path, and FIG. 6 is a schematic diagram showing the operating state in which a video cassette is loaded into a video deck. be. 1...Cassette body, 2...Upper case, 3...Lower case, 4, 5...Reel storage chamber, 6...Take-up reel,
7... Supply reel, 17, 18... Detection optical path, 29,
30...Light blocking means.
Claims (1)
出機構の検出光路をカセツト本体に形成し、この
検出光路の光が前記ビデオテープの末端テープを
透過することを検出し、末端検出が行なわれるビ
デオテープカセツトにおいて、前記カセツト本体
に形成された検出光路中に光遮断部材を配置し、
この光遮断部材と前記末端テープとを合せて所定
の光透過率を得ることを特徴とするビデオテープ
カセツト。 In a videotape cassette, a detection optical path of a tape end detection mechanism for detecting the end of a videotape is formed in the cassette body, and it is detected that the light of this detection optical path passes through the end tape of the videotape, and end detection is performed. , disposing a light blocking member in a detection optical path formed in the cassette body;
A videotape cassette characterized in that a predetermined light transmittance is obtained by combining the light blocking member and the end tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20342285U JPS62113484U (en) | 1985-12-30 | 1985-12-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20342285U JPS62113484U (en) | 1985-12-30 | 1985-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62113484U true JPS62113484U (en) | 1987-07-18 |
Family
ID=31168737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20342285U Pending JPS62113484U (en) | 1985-12-30 | 1985-12-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113484U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5661071A (en) * | 1979-10-19 | 1981-05-26 | Tdk Corp | Magnetic tape cassette |
| JPS5646088B2 (en) * | 1976-07-06 | 1981-10-30 |
-
1985
- 1985-12-30 JP JP20342285U patent/JPS62113484U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646088B2 (en) * | 1976-07-06 | 1981-10-30 | ||
| JPS5661071A (en) * | 1979-10-19 | 1981-05-26 | Tdk Corp | Magnetic tape cassette |