JPS6470949A - Tape winding preventing device in magnetic recording and reproducing and reproducing device - Google Patents
Tape winding preventing device in magnetic recording and reproducing and reproducing deviceInfo
- Publication number
- JPS6470949A JPS6470949A JP62227750A JP22775087A JPS6470949A JP S6470949 A JPS6470949 A JP S6470949A JP 62227750 A JP62227750 A JP 62227750A JP 22775087 A JP22775087 A JP 22775087A JP S6470949 A JPS6470949 A JP S6470949A
- Authority
- JP
- Japan
- Prior art keywords
- reel
- tape
- drum
- rotation
- reproducing
- 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
Abstract
PURPOSE:To prevent the damaging of a tape by detecting the rotation of a reel, deciding that it is abnormal when the number of upper limited rotations is exceeded, braking the reel, stopping the drum, operating simultaneously a supplying side reel and a winding side, and unloading them. CONSTITUTION:When a condition 6, in which a tape 8 is wound to a drum 1 due to dewing, etc., is caused a reel 2 is quickly changed from the normal rotation of an arrow 9 to the abnormally fast rotation of an arrow 10. A pulse generating circuit to detect the reel 2 and its rotation is provided, it is detected that the rotation is faster than a prescribed value, the reel braking is operated and the drum 1 is stopped. After the tape 8 is stopped, both supplying side reel 2 and winding side reel 3 are rotated in a tape winding direction while the rotation of the drum 1 is stopped, and thus, the sticking to an upper drum and a lower drum of the tape is separated, and unloading can be executed without damaging the tape.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227750A JPS6470949A (en) | 1987-09-11 | 1987-09-11 | Tape winding preventing device in magnetic recording and reproducing and reproducing device |
US07/235,117 US4951161A (en) | 1987-08-28 | 1988-08-22 | Device for preventing sticking of a magnetic tape to a rotating magnetic head drum |
DE3829052A DE3829052A1 (en) | 1987-08-28 | 1988-08-26 | DEVICE FOR PREVENTING A MAGNETIC TAPE FROM STICKING ON A ROTATING MAGNETIC HEAD DRUM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227750A JPS6470949A (en) | 1987-09-11 | 1987-09-11 | Tape winding preventing device in magnetic recording and reproducing and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6470949A true JPS6470949A (en) | 1989-03-16 |
Family
ID=16865785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62227750A Pending JPS6470949A (en) | 1987-08-28 | 1987-09-11 | Tape winding preventing device in magnetic recording and reproducing and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470949A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6108155A (en) * | 1991-12-20 | 2000-08-22 | Canon Kabushiki Kaisha | Recording or reproducing apparatus and method for taking up tape when ejecting tape cassette |
JP2011052413A (en) * | 2009-08-31 | 2011-03-17 | Jdc Corp | Concrete curing sheet and curing method |
US8016221B2 (en) | 2008-01-30 | 2011-09-13 | International Business Machines Corporation | Apparatus, system, and method for dynamic tape stick and tape break detection |
-
1987
- 1987-09-11 JP JP62227750A patent/JPS6470949A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6108155A (en) * | 1991-12-20 | 2000-08-22 | Canon Kabushiki Kaisha | Recording or reproducing apparatus and method for taking up tape when ejecting tape cassette |
US8016221B2 (en) | 2008-01-30 | 2011-09-13 | International Business Machines Corporation | Apparatus, system, and method for dynamic tape stick and tape break detection |
JP2011052413A (en) * | 2009-08-31 | 2011-03-17 | Jdc Corp | Concrete curing sheet and curing method |
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