JPS57120221A - Ring head for vertical magnetization recording and reproduction - Google Patents

Ring head for vertical magnetization recording and reproduction

Info

Publication number
JPS57120221A
JPS57120221A JP427981A JP427981A JPS57120221A JP S57120221 A JPS57120221 A JP S57120221A JP 427981 A JP427981 A JP 427981A JP 427981 A JP427981 A JP 427981A JP S57120221 A JPS57120221 A JP S57120221A
Authority
JP
Japan
Prior art keywords
ring head
gap
reproduction
superconductive material
vertical magnetization
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
JP427981A
Other languages
Japanese (ja)
Inventor
Mamoru Sugimoto
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP427981A priority Critical patent/JPS57120221A/en
Publication of JPS57120221A publication Critical patent/JPS57120221A/en
Pending 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/11—Shielding of head against electric or magnetic fields

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

PURPOSE:To improve recording and reproducing efficiency by increasing the vertical magnetic-field component of a vertically magnetized film by forming a superconductive material in the gap of a ring head. CONSTITUTION:In the gap of a ring head 6, a superconductive material 9 is formed. Even when the Meissner effect of the superconductive material narrows the ring head gap, magnetic flux is never short-circuited in the gap, and the magnetic flux 7 in the ring head is all converged at the tip part of the gap, improving recording and reproducing efficiency greatly.
JP427981A 1981-01-14 1981-01-14 Ring head for vertical magnetization recording and reproduction Pending JPS57120221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP427981A JPS57120221A (en) 1981-01-14 1981-01-14 Ring head for vertical magnetization recording and reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP427981A JPS57120221A (en) 1981-01-14 1981-01-14 Ring head for vertical magnetization recording and reproduction

Publications (1)

Publication Number Publication Date
JPS57120221A true JPS57120221A (en) 1982-07-27

Family

ID=11580094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP427981A Pending JPS57120221A (en) 1981-01-14 1981-01-14 Ring head for vertical magnetization recording and reproduction

Country Status (1)

Country Link
JP (1) JPS57120221A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622341A1 (en) * 1987-10-27 1989-04-28 Thomson Csf RECORDING / READING MAGNETIC HEAD COMPRISING A SUPERCONDUCTING MATERIAL
FR2633428A1 (en) * 1988-06-28 1989-12-29 Europ Composants Electron Magnetic recording/reading head with superconducting pad.
EP0367291A2 (en) * 1988-11-04 1990-05-09 Hitachi, Ltd. Method for magnetic orientation of magnetic recording medium and system therefor and longitudinally oriented magnetic recording medium
US4926082A (en) * 1988-02-12 1990-05-15 University Of Colorado Foundation, Inc. Superconductor devices for disk drives
US4971947A (en) * 1988-06-20 1990-11-20 University Of Colorado Foundation, Inc. Superconductor magnetic reading and writing heads
US5075280A (en) * 1988-11-01 1991-12-24 Ampex Corporation Thin film magnetic head with improved flux concentration for high density recording/playback utilizing superconductors
US5153798A (en) * 1987-07-15 1992-10-06 U.S. Philips Corp. Magnetic head including a core having a non-magnetic gap
US5463518A (en) * 1987-04-20 1995-10-31 Hitachi, Ltd. Magnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference device
US7095585B2 (en) * 1995-12-22 2006-08-22 Seagate Technology Llc Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451810A (en) * 1977-09-30 1979-04-24 Shiyunichi Iwasaki Magnetic recording regenerative apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451810A (en) * 1977-09-30 1979-04-24 Shiyunichi Iwasaki Magnetic recording regenerative apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5463518A (en) * 1987-04-20 1995-10-31 Hitachi, Ltd. Magnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference device
US5153798A (en) * 1987-07-15 1992-10-06 U.S. Philips Corp. Magnetic head including a core having a non-magnetic gap
FR2622341A1 (en) * 1987-10-27 1989-04-28 Thomson Csf RECORDING / READING MAGNETIC HEAD COMPRISING A SUPERCONDUCTING MATERIAL
EP0314557A2 (en) * 1987-10-27 1989-05-03 Thomson-Csf Recording/reproducing magnetic head including a superconductor material
US4979064A (en) * 1987-10-27 1990-12-18 Thomson-Csf Magnetic recording/playback head comprising a superconducting material
EP0314557A3 (en) * 1987-10-27 1991-09-18 Thomson-Csf Recording/reproducing magnetic head including a superconductor material
US4926082A (en) * 1988-02-12 1990-05-15 University Of Colorado Foundation, Inc. Superconductor devices for disk drives
US4971947A (en) * 1988-06-20 1990-11-20 University Of Colorado Foundation, Inc. Superconductor magnetic reading and writing heads
FR2633428A1 (en) * 1988-06-28 1989-12-29 Europ Composants Electron Magnetic recording/reading head with superconducting pad.
US5075280A (en) * 1988-11-01 1991-12-24 Ampex Corporation Thin film magnetic head with improved flux concentration for high density recording/playback utilizing superconductors
EP0367291A2 (en) * 1988-11-04 1990-05-09 Hitachi, Ltd. Method for magnetic orientation of magnetic recording medium and system therefor and longitudinally oriented magnetic recording medium
US7095585B2 (en) * 1995-12-22 2006-08-22 Seagate Technology Llc Hard disk drive for perpendicular recording with transducer having submicron gap between pole tips

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