JPH01107007U - - Google Patents
Info
- Publication number
- JPH01107007U JPH01107007U JP20095587U JP20095587U JPH01107007U JP H01107007 U JPH01107007 U JP H01107007U JP 20095587 U JP20095587 U JP 20095587U JP 20095587 U JP20095587 U JP 20095587U JP H01107007 U JPH01107007 U JP H01107007U
- Authority
- JP
- Japan
- Prior art keywords
- solenoid
- signal
- rotating
- cleaning device
- head cleaning
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図Ａ，Ｂは本考案の回転ヘツドクリーニン
グ装置の平面図、第２図は本考案装置の駆動用回
路のブロツク図、第３図及び第４図は駆動用回路
各部の動作説明用信号波形図（タイミングチヤー
ト）、第５図Ａ，Ｂは従来の回転ヘツドドラム装
置の平面図及び側面図、第６図は従来の回転ヘツ
ドクリーニング装置の斜視図である。
１…上ドラム、２…磁気ヘツド、３…下ドラム
、４…磁気テープ、１０…回転ヘツドクリーニン
グ装置、１２…ローラ（クリーナ）、１４…コイ
ルバネ、１６…ピン、１７…ソレノイド、１８…
パワーレバー、１９…クリーナアーム、２０…駆
動回路、２１…第１の選択回路、２２…加算器、
２３…カウンタ、２４…第２の選択回路、２５…
第１のパルス発生回路、２６…第２のパルス発生
回路、２７…リセツト回路、２８…ゲート回路、
２９…タイマ、３１…増幅回路。
Figures 1A and B are plan views of the rotary head cleaning device of the present invention, Figure 2 is a block diagram of the drive circuit of the device of the present invention, and Figures 3 and 4 are signals for explaining the operation of each part of the drive circuit. A waveform chart (timing chart), FIGS. 5A and 5B are a plan view and a side view of a conventional rotary head drum device, and FIG. 6 is a perspective view of a conventional rotary head cleaning device. DESCRIPTION OF SYMBOLS 1... Upper drum, 2... Magnetic head, 3... Lower drum, 4... Magnetic tape, 10... Rotating head cleaning device, 12... Roller (cleaner), 14... Coil spring, 16... Pin, 17... Solenoid, 18...
Power lever, 19... Cleaner arm, 20... Drive circuit, 21... First selection circuit, 22... Adder,
23...Counter, 24...Second selection circuit, 25...
First pulse generation circuit, 26... Second pulse generation circuit, 27... Reset circuit, 28... Gate circuit,
29...Timer, 31...Amplification circuit.
Claims (1)
回転軌道のうち磁気テープ添接部分以外の箇所に
対向設置されたクリーナと、該クリーナを支持す
ると共に上記回転ドラムへの押圧力を伝達する支
持部材とを有するＶＴＲの回転ヘツドクリーニン
グ装置において、上記押圧力を発生する手段とし
てソレノイドを使用し、該ソレノイドを駆動させ
るための信号を供給手段として、上記ＶＴＲ本体
が長時間記録モードであること及び無記録時であ
ることを検出して動作信号を出力する選択回路と
、該選択回路からの動作信号により上記１対の磁
気ヘツドの切換えパルスを入力してこれをカウン
トするカウンタと、該カウンタにより所定のパル
ス数がカウントされた際に上記ソレノイド駆動用
信号を発生するパルス発生回路と、該ソレノイド
の駆動時間を設定するタイマとを少なくとも具備
して構成したことを特徴とする回転ヘツドクリー
ニング装置。 A cleaner installed opposite to the rotating orbit of a pair of magnetic heads attached to the rotating drum at a location other than the area where the magnetic tape is attached, and a support member that supports the cleaner and transmits a pressing force to the rotating drum. In the rotary head cleaning device for a VTR, a solenoid is used as a means for generating the pressing force, and a solenoid is used as a means for supplying a signal to drive the solenoid, and a solenoid is used as a means for supplying a signal to drive the solenoid, and the VTR body is in a long-time recording mode and is a selection circuit that detects that recording is in progress and outputs an operation signal; a counter that inputs and counts switching pulses for the pair of magnetic heads based on the operation signal from the selection circuit; A rotating head cleaning device comprising at least a pulse generating circuit that generates the solenoid driving signal when the number of pulses is counted, and a timer that sets the driving time of the solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20095587U JPH0437287Y2 (en) | 1987-12-29 | 1987-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20095587U JPH0437287Y2 (en) | 1987-12-29 | 1987-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01107007U true JPH01107007U (en) | 1989-07-19 |
| JPH0437287Y2 JPH0437287Y2 (en) | 1992-09-02 |
Family
ID=31491339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20095587U Expired JPH0437287Y2 (en) | 1987-12-29 | 1987-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437287Y2 (en) |
-
1987
- 1987-12-29 JP JP20095587U patent/JPH0437287Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0437287Y2 (en) | 1992-09-02 |
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