JPS56119961A - Constant tension control device for magnetic tape - Google Patents

Constant tension control device for magnetic tape

Info

Publication number
JPS56119961A
JPS56119961A JP2162080A JP2162080A JPS56119961A JP S56119961 A JPS56119961 A JP S56119961A JP 2162080 A JP2162080 A JP 2162080A JP 2162080 A JP2162080 A JP 2162080A JP S56119961 A JPS56119961 A JP S56119961A
Authority
JP
Japan
Prior art keywords
magnetic tape
constant
control device
tension control
constant tension
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
JP2162080A
Other languages
Japanese (ja)
Inventor
Itsuki Ban
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.)
Sekoh Giken KK
Secoh Giken Co Ltd
Original Assignee
Sekoh Giken KK
Secoh Giken 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 Sekoh Giken KK, Secoh Giken Co Ltd filed Critical Sekoh Giken KK
Priority to JP2162080A priority Critical patent/JPS56119961A/en
Publication of JPS56119961A publication Critical patent/JPS56119961A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed

Landscapes

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

Abstract

PURPOSE:To hold the running speed of a magnetic tape always constant by making the tension of the magnetic tape constant irrespective of the wound amount of the magnetic tape. CONSTITUTION:Even if playback is started, the output of a DA conversion circuit 31 is not emitted unless a reel 8, that is, an electric motor M, makes 1 turn. Hence, resistances 39a, 39b are provided and prescribed base current is supplied to a transistor 32. The current value thereof is made equal to the base current value by the output of the circuit 31 of the time of the value of a radius roughly equal to the diameter of a takeup reel 9. In this way, the tension of a magnetic tape is made constant and the running speed of the magnetic tape is kept constant.
JP2162080A 1980-02-25 1980-02-25 Constant tension control device for magnetic tape Pending JPS56119961A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2162080A JPS56119961A (en) 1980-02-25 1980-02-25 Constant tension control device for magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2162080A JPS56119961A (en) 1980-02-25 1980-02-25 Constant tension control device for magnetic tape

Publications (1)

Publication Number Publication Date
JPS56119961A true JPS56119961A (en) 1981-09-19

Family

ID=12060094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2162080A Pending JPS56119961A (en) 1980-02-25 1980-02-25 Constant tension control device for magnetic tape

Country Status (1)

Country Link
JP (1) JPS56119961A (en)

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