JPS5525838A - Magnetic tape device - Google Patents

Magnetic tape device

Info

Publication number
JPS5525838A
JPS5525838A JP9791878A JP9791878A JPS5525838A JP S5525838 A JPS5525838 A JP S5525838A JP 9791878 A JP9791878 A JP 9791878A JP 9791878 A JP9791878 A JP 9791878A JP S5525838 A JPS5525838 A JP S5525838A
Authority
JP
Japan
Prior art keywords
tape
torque
capstan
acceleration
speed
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
JP9791878A
Other languages
Japanese (ja)
Inventor
Yasushi Atsuta
Haruo Suenaga
Hisayoshi Inoue
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 JP9791878A priority Critical patent/JPS5525838A/en
Publication of JPS5525838A publication Critical patent/JPS5525838A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To always keep a constant tape tension regardless of the tape speed by varying the reel torque via the torque control means and by the signal which is obtained by multiplying the output signal of the acceleration decision means by the output signal of the winding diameter decision means.
CONSTITUTION: The following means are provided: speed variation means 20 which functions as the magnetic tape device driven by capstan 19 and varies continuously the speed of capstan 19; torque control means 38 and 39 which vary the torque for reels 11 and 12; acceleration decision means 25 which decides the acceleration of tape 13; and winding diameter decision means 28 and 29 which decide the winding diameters of reels 11 and 12. When means 20 is actuated under running of tape 13 with driving of capstan 19, means 38 and 39 are controlled by the signal obtained by multiplying through multiplier circuits 34 and 35 the output signals of means 25 by the output signals of means 28 and 29 in order to vary the reel torque.
COPYRIGHT: (C)1980,JPO&Japio
JP9791878A 1978-08-10 1978-08-10 Magnetic tape device Pending JPS5525838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9791878A JPS5525838A (en) 1978-08-10 1978-08-10 Magnetic tape device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9791878A JPS5525838A (en) 1978-08-10 1978-08-10 Magnetic tape device

Publications (1)

Publication Number Publication Date
JPS5525838A true JPS5525838A (en) 1980-02-23

Family

ID=14205072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9791878A Pending JPS5525838A (en) 1978-08-10 1978-08-10 Magnetic tape device

Country Status (1)

Country Link
JP (1) JPS5525838A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169956A (en) * 1981-04-14 1982-10-19 Sony Corp Control circuit for tape speed
JPS63237246A (en) * 1987-03-26 1988-10-03 Sony Corp Reel driving circuit
JPH01298560A (en) * 1988-05-26 1989-12-01 Sony Corp Reel motor controller
JPH04178949A (en) * 1990-11-14 1992-06-25 Matsushita Electric Ind Co Ltd Tape driver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212004A (en) * 1975-07-17 1977-01-29 Nippon Paint Co Ltd Photoosensitive resin composition for flexo graphic plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212004A (en) * 1975-07-17 1977-01-29 Nippon Paint Co Ltd Photoosensitive resin composition for flexo graphic plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169956A (en) * 1981-04-14 1982-10-19 Sony Corp Control circuit for tape speed
JPH0235376B2 (en) * 1981-04-14 1990-08-09 Sony Corp
JPS63237246A (en) * 1987-03-26 1988-10-03 Sony Corp Reel driving circuit
JPH01298560A (en) * 1988-05-26 1989-12-01 Sony Corp Reel motor controller
JPH04178949A (en) * 1990-11-14 1992-06-25 Matsushita Electric Ind Co Ltd Tape driver

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