JPS643844A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS643844A
JPS643844A JP62157022A JP15702287A JPS643844A JP S643844 A JPS643844 A JP S643844A JP 62157022 A JP62157022 A JP 62157022A JP 15702287 A JP15702287 A JP 15702287A JP S643844 A JPS643844 A JP S643844A
Authority
JP
Japan
Prior art keywords
pressing force
tape
detection head
tape tension
difference
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
Application number
JP62157022A
Other languages
Japanese (ja)
Inventor
Tetsuya Tonomura
Hideaki Yoshio
Akio Konishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62157022A priority Critical patent/JPS643844A/en
Publication of JPS643844A publication Critical patent/JPS643844A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent tape tension from varying by providing a detection head which detects tape pressing force to a rotary cylinder and adjusting the rotary torque of a reel turntable so that the tape pressing force is specific reference pressing force. CONSTITUTION:The arcuate part of a base 19 is strained with the pressing force generated in the detection head 2 of a tape pressing force detecting means 17 provided to the rotary cylinder 7, a pressing force signal from a strain gauge 21 is inputted to a system control circuit 23 through a detecting circuit 22, and the difference from the preset reference pressing force is calculated. Then a signal based upon the pressing force difference is outputted to a driving circuit 25 for the reel motor 24 of the reel turntable 3 and its driving force is adjusted to control the tape tension. Further, the detection head 20 and a magnetic head are formed of the same materials in the same tip surface shape, so the invariably correct tape tension is detected.
JP62157022A 1987-06-24 1987-06-24 Magnetic recording and reproducing device Pending JPS643844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62157022A JPS643844A (en) 1987-06-24 1987-06-24 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62157022A JPS643844A (en) 1987-06-24 1987-06-24 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS643844A true JPS643844A (en) 1989-01-09

Family

ID=15640472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62157022A Pending JPS643844A (en) 1987-06-24 1987-06-24 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS643844A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196649A (en) * 1982-05-12 1983-11-16 Canon Inc Tension controller of recording medium
JPS60211652A (en) * 1984-04-05 1985-10-24 Matsushita Electric Ind Co Ltd Tension controlling device
JPS60211653A (en) * 1984-04-05 1985-10-24 Mitsubishi Electric Corp Magnetic recording and reproducing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196649A (en) * 1982-05-12 1983-11-16 Canon Inc Tension controller of recording medium
JPS60211652A (en) * 1984-04-05 1985-10-24 Matsushita Electric Ind Co Ltd Tension controlling device
JPS60211653A (en) * 1984-04-05 1985-10-24 Mitsubishi Electric Corp Magnetic recording and reproducing device

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