JPH0581961B2 - - Google Patents

Info

Publication number
JPH0581961B2
JPH0581961B2 JP60285699A JP28569985A JPH0581961B2 JP H0581961 B2 JPH0581961 B2 JP H0581961B2 JP 60285699 A JP60285699 A JP 60285699A JP 28569985 A JP28569985 A JP 28569985A JP H0581961 B2 JPH0581961 B2 JP H0581961B2
Authority
JP
Japan
Prior art keywords
coil
recording
constant current
erasing
semiconductor switches
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.)
Expired - Lifetime
Application number
JP60285699A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62145503A (ja
Inventor
Hitoshi Hirobe
Takashi Soga
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP28569985A priority Critical patent/JPS62145503A/ja
Priority to US06/922,049 priority patent/US4821127A/en
Publication of JPS62145503A publication Critical patent/JPS62145503A/ja
Publication of JPH0581961B2 publication Critical patent/JPH0581961B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Digital Magnetic Recording (AREA)
JP28569985A 1985-10-18 1985-12-20 磁気消去装置 Granted JPS62145503A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP28569985A JPS62145503A (ja) 1985-12-20 1985-12-20 磁気消去装置
US06/922,049 US4821127A (en) 1985-10-18 1986-10-20 Demagnetizing apparatus for erasing signals recorded on concentric tracks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28569985A JPS62145503A (ja) 1985-12-20 1985-12-20 磁気消去装置

Publications (2)

Publication Number Publication Date
JPS62145503A JPS62145503A (ja) 1987-06-29
JPH0581961B2 true JPH0581961B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-11-17

Family

ID=17694883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28569985A Granted JPS62145503A (ja) 1985-10-18 1985-12-20 磁気消去装置

Country Status (1)

Country Link
JP (1) JPS62145503A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01243203A (ja) * 1988-03-24 1989-09-27 Fuji Photo Film Co Ltd 磁気消去方法
JPH04170704A (ja) * 1990-11-05 1992-06-18 Nec Gumma Ltd 磁気記憶装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858723B2 (ja) * 1974-07-09 1983-12-27 シャープ株式会社 エイゾウキロクサイセイソウチノ シヨウキヨカイロ

Also Published As

Publication number Publication date
JPS62145503A (ja) 1987-06-29

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