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JPS5616954A - Magnetic tape unit - Google Patents

Magnetic tape unit

Info

Publication number
JPS5616954A
JPS5616954A JP9209179A JP9209179A JPS5616954A JP S5616954 A JPS5616954 A JP S5616954A JP 9209179 A JP9209179 A JP 9209179A JP 9209179 A JP9209179 A JP 9209179A JP S5616954 A JPS5616954 A JP S5616954A
Authority
JP
Japan
Prior art keywords
circuit
reel
detector
tension
motor
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
JP9209179A
Other languages
Japanese (ja)
Inventor
Yoshio Terada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9209179A priority Critical patent/JPS5616954A/en
Publication of JPS5616954A publication Critical patent/JPS5616954A/en
Pending legal-status Critical Current

Links

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

PURPOSE: To keep the tension of magnetic tape constant, by controlling the drive current of the reel motor at winding side while applying the brake current to the reel motor at pay-off side and exerting the braking.
CONSTITUTION: The magnetic tape 7 is wound between the reels 1 and 2, and the tension detector 3 and the speed detector 4 are povided. The reel drive motor 10 is of multiwinding type, and the drive current is supplied from the drive current circuit 12 and the brake current is fed from the brake current circuit 14. The motor 11 is constituted similarly. When the tape 7 runs from the reel 2 to the reel 1, if the tape tension changes, it is detected at the detector 3 and the brake current is adjusted at the circuit 15. If the running speed slows down with over-braking, it is detected at the detector 4 and the circuit 16 controls the drive current via the circuit 12. Thus, the tape tension can be kept constant.
COPYRIGHT: (C)1981,JPO&Japio
JP9209179A 1979-07-19 1979-07-19 Magnetic tape unit Pending JPS5616954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9209179A JPS5616954A (en) 1979-07-19 1979-07-19 Magnetic tape unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9209179A JPS5616954A (en) 1979-07-19 1979-07-19 Magnetic tape unit

Publications (1)

Publication Number Publication Date
JPS5616954A true JPS5616954A (en) 1981-02-18

Family

ID=14044763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9209179A Pending JPS5616954A (en) 1979-07-19 1979-07-19 Magnetic tape unit

Country Status (1)

Country Link
JP (1) JPS5616954A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133658A (en) * 1982-02-03 1983-08-09 Mitsubishi Electric Corp Magnetic tape running device
US4792662A (en) * 1986-09-02 1988-12-20 Daikin Industries, Ltd. Sheet electrical heating element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133658A (en) * 1982-02-03 1983-08-09 Mitsubishi Electric Corp Magnetic tape running device
US4792662A (en) * 1986-09-02 1988-12-20 Daikin Industries, Ltd. Sheet electrical heating element

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