JPS5312611A - Cassette type magnetic head demagnetizer - Google Patents

Cassette type magnetic head demagnetizer

Info

Publication number
JPS5312611A
JPS5312611A JP8656976A JP8656976A JPS5312611A JP S5312611 A JPS5312611 A JP S5312611A JP 8656976 A JP8656976 A JP 8656976A JP 8656976 A JP8656976 A JP 8656976A JP S5312611 A JPS5312611 A JP S5312611A
Authority
JP
Japan
Prior art keywords
magnetic head
type magnetic
cassette type
demagnetizer
head demagnetizer
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.)
Granted
Application number
JP8656976A
Other languages
Japanese (ja)
Other versions
JPS5810765B2 (en
Inventor
Keiichi Yoshizawa
Isamu Nakao
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP51086569A priority Critical patent/JPS5810765B2/en
Priority to US05/817,181 priority patent/US4135219A/en
Priority to DE2733043A priority patent/DE2733043C3/en
Priority to NLAANVRAGE7708125,A priority patent/NL178544C/en
Priority to GB30887/77A priority patent/GB1539867A/en
Publication of JPS5312611A publication Critical patent/JPS5312611A/en
Priority to HK702/79A priority patent/HK70279A/en
Priority to MY149/80A priority patent/MY8000149A/en
Publication of JPS5810765B2 publication Critical patent/JPS5810765B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/465—Arrangements for demagnetisation of heads

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To positively demagnetize head with the a.c. magnetic field which is initially strong enough for demagnetizing and attenuates with time, by performing driving of a demagnetizing electromagnet with a charged capacitor.
JP51086569A 1976-07-22 1976-07-22 Cassette type magnetic head demagnetizer Expired JPS5810765B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP51086569A JPS5810765B2 (en) 1976-07-22 1976-07-22 Cassette type magnetic head demagnetizer
US05/817,181 US4135219A (en) 1976-07-22 1977-07-20 Demagnetizer for a magnetic head of a recording-reproducing device
DE2733043A DE2733043C3 (en) 1976-07-22 1977-07-21 Demagnetization device for the head of a cassette tape recorder
NLAANVRAGE7708125,A NL178544C (en) 1976-07-22 1977-07-21 DEMAGNETIZATION CASSETTE FOR A REGISTER / DISPLAY DEVICE.
GB30887/77A GB1539867A (en) 1976-07-22 1977-07-22 Demagnetizer for a magnetic head of a cassette tape recorder
HK702/79A HK70279A (en) 1976-07-22 1979-10-04 Demagnetizer for a magnetic head of a cassette tape recorder
MY149/80A MY8000149A (en) 1976-07-22 1980-12-30 Demagnetizer for a magnetic head of a cassette tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51086569A JPS5810765B2 (en) 1976-07-22 1976-07-22 Cassette type magnetic head demagnetizer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP12407781A Division JPS57169908A (en) 1981-08-10 1981-08-10 Cassette type magnetic head erasing device

Publications (2)

Publication Number Publication Date
JPS5312611A true JPS5312611A (en) 1978-02-04
JPS5810765B2 JPS5810765B2 (en) 1983-02-28

Family

ID=13890637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51086569A Expired JPS5810765B2 (en) 1976-07-22 1976-07-22 Cassette type magnetic head demagnetizer

Country Status (1)

Country Link
JP (1) JPS5810765B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933117U (en) * 1982-08-20 1984-03-01 九州日立マクセル株式会社 demagnetizer
JPH0280658A (en) * 1988-09-16 1990-03-20 Tsudakoma Corp Speed controller for sizer or the like
US5022599A (en) * 1988-06-13 1991-06-11 Tsudakoma Kogyo Kabushiki Kaisha Controller for a winding machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104630A (en) * 1974-01-19 1975-08-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50104630A (en) * 1974-01-19 1975-08-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933117U (en) * 1982-08-20 1984-03-01 九州日立マクセル株式会社 demagnetizer
JPS6343610Y2 (en) * 1982-08-20 1988-11-14
US5022599A (en) * 1988-06-13 1991-06-11 Tsudakoma Kogyo Kabushiki Kaisha Controller for a winding machine
JPH0280658A (en) * 1988-09-16 1990-03-20 Tsudakoma Corp Speed controller for sizer or the like

Also Published As

Publication number Publication date
JPS5810765B2 (en) 1983-02-28

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