JPS647301A - Bias magnetic field application device - Google Patents

Bias magnetic field application device

Info

Publication number
JPS647301A
JPS647301A JP16084587A JP16084587A JPS647301A JP S647301 A JPS647301 A JP S647301A JP 16084587 A JP16084587 A JP 16084587A JP 16084587 A JP16084587 A JP 16084587A JP S647301 A JPS647301 A JP S647301A
Authority
JP
Japan
Prior art keywords
permanent magnet
pole
magnetic field
bias magnetic
erasure
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
JP16084587A
Other languages
English (en)
Inventor
Takeshi Terasawa
Osamu Nakajima
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16084587A priority Critical patent/JPS647301A/ja
Publication of JPS647301A publication Critical patent/JPS647301A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Recording Or Reproducing By Magnetic Means (AREA)
JP16084587A 1987-06-30 1987-06-30 Bias magnetic field application device Pending JPS647301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16084587A JPS647301A (en) 1987-06-30 1987-06-30 Bias magnetic field application device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16084587A JPS647301A (en) 1987-06-30 1987-06-30 Bias magnetic field application device

Publications (1)

Publication Number Publication Date
JPS647301A true JPS647301A (en) 1989-01-11

Family

ID=15723650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16084587A Pending JPS647301A (en) 1987-06-30 1987-06-30 Bias magnetic field application device

Country Status (1)

Country Link
JP (1) JPS647301A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351221A (en) * 1989-12-08 1994-09-27 Ricoh Company, Ltd. Apparatus for applying bias magnetic field including a rotatable magnet and a plurality of coils for controlling the rotation of the magnet
US5367508A (en) * 1993-02-10 1994-11-22 Seiko Epson Corporation Magnetic field generation mechanism for magneto-optical recording
CN113900411A (zh) * 2021-09-27 2022-01-07 泉州装备制造研究所 一种基于激光的三维磁编程装置及方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351221A (en) * 1989-12-08 1994-09-27 Ricoh Company, Ltd. Apparatus for applying bias magnetic field including a rotatable magnet and a plurality of coils for controlling the rotation of the magnet
US5367508A (en) * 1993-02-10 1994-11-22 Seiko Epson Corporation Magnetic field generation mechanism for magneto-optical recording
CN113900411A (zh) * 2021-09-27 2022-01-07 泉州装备制造研究所 一种基于激光的三维磁编程装置及方法
CN113900411B (zh) * 2021-09-27 2024-06-07 泉州装备制造研究所 一种基于激光的三维磁编程装置及方法

Similar Documents

Publication Publication Date Title
EP0242837B1 (en) Magnetooptical recording apparatus
JPS647301A (en) Bias magnetic field application device
JPS6419503A (en) Bias magnetic field impression device
JPS5724047A (en) Recorder and reproducer
EP0431604A2 (en) A magnetic bias apparatus for a magnetooptical disk drive apparatus
JPH0231301A (ja) 光磁気記録再生装置の外部磁界装置
JPS6413203A (en) Thin film electromagnet impressing magnetic field for optical magnetic disk
JPS6233351A (ja) 光磁気記録再生装置
KR20040042255A (ko) 광픽업 액츄에이터 및 그를 채용한 광디스크 드라이브
SU678520A1 (ru) Устройство дл оптической записи
JPS57179906A (en) Magnetic head
JPS63317903A (ja) バイアス磁界印加装置
JP2573402Y2 (ja) パルス発生素子
JP2679270B2 (ja) 永久磁石型消去ヘッドおよびその着磁装置
KR20210040583A (ko) 자속 변화를 이용하는 에너지 하베스팅 장치 및 스위치
JPS57183613A (en) Magnetic recording system
JPS6275413A (ja) 光学系駆動装置
JPH03162734A (ja) 光磁気記録再生装置
JPS6353701A (ja) 高周波変調磁界発生装置
JPS62128045A (ja) 光磁気記録再生装置
JPH0573807A (ja) 光磁気デイスクの磁場印加機構
JPS5698367A (en) Stepping motor for clock
JPS55150115A (en) Vertical magnetization type magnetic head
JPH0684104A (ja) 光磁気ディスクに対する磁界発生装置
JPH04123301A (ja) 変調磁界発生装置