JPS563455A - Tape running controller - Google Patents

Tape running controller

Info

Publication number
JPS563455A
JPS563455A JP7786079A JP7786079A JPS563455A JP S563455 A JPS563455 A JP S563455A JP 7786079 A JP7786079 A JP 7786079A JP 7786079 A JP7786079 A JP 7786079A JP S563455 A JPS563455 A JP S563455A
Authority
JP
Japan
Prior art keywords
tape
tension
tr20t
motor
take
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
JP7786079A
Other languages
Japanese (ja)
Inventor
Hiroyuki Tanaka
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.)
Teac Corp
Original Assignee
Teac Corp
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 Teac Corp filed Critical Teac Corp
Priority to JP7786079A priority Critical patent/JPS563455A/en
Publication of JPS563455A publication Critical patent/JPS563455A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To avoid the break or the sag of the tape when the tape running is stopped, by giving the tape tension control even after the tape is converted to the stop mode from the run mode and then stopping the tape with application of the brake.
CONSTITUTION: When the quick traversing mode is changed to the stop mode, the tape continues running by the inertia but the base voltage of control transistor TR20T is lowered. On the other hand, for reel motor MT of the take-up side, the emitter of TR20T produces the reverse electromotive voltage to turn to the positive high voltage since take-up reel 1T has the high-speed rotation by the inertia. As a result, the take-up torque of motor MT is lowered, and thus the tape tension is reduced. This tension reduction is detected by the tension arm, and the resistance value of variable resistor VRS increases. Then the back tension torque of reel motor MS increases to maintain the tension at the fixed level. At the same time, for motor MS, the emitter of TR20T produces the reverse electromotive voltage to turn to the negative voltage. Thus the smooth conduction is secured for TR20T. Then the tape is given the stop mode while keeping the fixed tension.
COPYRIGHT: (C)1981,JPO&Japio
JP7786079A 1979-06-20 1979-06-20 Tape running controller Pending JPS563455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7786079A JPS563455A (en) 1979-06-20 1979-06-20 Tape running controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7786079A JPS563455A (en) 1979-06-20 1979-06-20 Tape running controller

Publications (1)

Publication Number Publication Date
JPS563455A true JPS563455A (en) 1981-01-14

Family

ID=13645805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7786079A Pending JPS563455A (en) 1979-06-20 1979-06-20 Tape running controller

Country Status (1)

Country Link
JP (1) JPS563455A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848261A (en) * 1981-09-14 1983-03-22 Teac Co Reel motor driving circuit
US9074985B2 (en) 2008-11-21 2015-07-07 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and device for acoustic analysis of microporosities in a material such as concrete using multiple cMUTs transducers incorporated in the material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848261A (en) * 1981-09-14 1983-03-22 Teac Co Reel motor driving circuit
US9074985B2 (en) 2008-11-21 2015-07-07 Commissariat A L'energie Atomique Et Aux Energies Alternatives Method and device for acoustic analysis of microporosities in a material such as concrete using multiple cMUTs transducers incorporated in the material

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