JPS5647A - Magnetic recording and reproducing unit - Google Patents
Magnetic recording and reproducing unitInfo
- Publication number
- JPS5647A JPS5647A JP7614179A JP7614179A JPS5647A JP S5647 A JPS5647 A JP S5647A JP 7614179 A JP7614179 A JP 7614179A JP 7614179 A JP7614179 A JP 7614179A JP S5647 A JPS5647 A JP S5647A
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- revolutions
- detection
- magnet
- reel
- 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 increase the sensitivity of detection of number of revolutions, by providing the magnet for number of revolutions detection with the pulley of motor driving the reel turntable and increasing the output signal frequency of the magnetic sensing element without increasing the number of magnetizing poles of magnet.
CONSTITUTION: The idler 7 is selectively pressed with the pulley 6 and winding reel 2, or pulley 6 and supply reel turntable 1 with the spring 14 suspended between the lever 10 and the chassis 8, and the permanent magnet 5 for number of revolution detection is always linked to the reel turntable of tape winding side. Accordingly, if the drive is stopped from fast traverse due to the inertia, no slack of tape is produced, but absorbing the slack. Further, the permanent magnet 5 is fitted with the pulley 6, the permanent magnet 5 rotates in the number of revolutions several times the reel turntables 1, 2, the output signal frequency of the magnetic sensing element 16 is increased without increasing the number of magnetized poles of magnet, and the sensitivity of detection for number of revolutions can be increased.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7614179A JPS5647A (en) | 1979-06-15 | 1979-06-15 | Magnetic recording and reproducing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7614179A JPS5647A (en) | 1979-06-15 | 1979-06-15 | Magnetic recording and reproducing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5647A true JPS5647A (en) | 1981-01-06 |
Family
ID=13596703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7614179A Pending JPS5647A (en) | 1979-06-15 | 1979-06-15 | Magnetic recording and reproducing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5647A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0366040U (en) * | 1989-10-27 | 1991-06-27 | ||
JPH04265552A (en) * | 1991-02-19 | 1992-09-21 | Sharp Corp | Magnetic recording and reproducing device |
-
1979
- 1979-06-15 JP JP7614179A patent/JPS5647A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0366040U (en) * | 1989-10-27 | 1991-06-27 | ||
JPH04265552A (en) * | 1991-02-19 | 1992-09-21 | Sharp Corp | Magnetic recording and reproducing device |
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