DE3678483D1 - Magnetkopf zur vertikalaufzeichnung. - Google Patents

Magnetkopf zur vertikalaufzeichnung.

Info

Publication number
DE3678483D1
DE3678483D1 DE8686200693T DE3678483T DE3678483D1 DE 3678483 D1 DE3678483 D1 DE 3678483D1 DE 8686200693 T DE8686200693 T DE 8686200693T DE 3678483 T DE3678483 T DE 3678483T DE 3678483 D1 DE3678483 D1 DE 3678483D1
Authority
DE
Germany
Prior art keywords
magnetic head
vertical recording
recording
vertical
magnetic
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
DE8686200693T
Other languages
English (en)
Inventor
Victor Zieren
Steven Broeils Luitjens
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE3678483D1 publication Critical patent/DE3678483D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE8686200693T 1985-04-26 1986-04-23 Magnetkopf zur vertikalaufzeichnung. Expired - Lifetime DE3678483D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8501200A NL8501200A (nl) 1985-04-26 1985-04-26 Magneetkop voor loodrechte registratie.

Publications (1)

Publication Number Publication Date
DE3678483D1 true DE3678483D1 (de) 1991-05-08

Family

ID=19845890

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686200693T Expired - Lifetime DE3678483D1 (de) 1985-04-26 1986-04-23 Magnetkopf zur vertikalaufzeichnung.

Country Status (5)

Country Link
US (1) US4939609A (de)
EP (1) EP0199422B1 (de)
JP (1) JPH0833977B2 (de)
DE (1) DE3678483D1 (de)
NL (1) NL8501200A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011694A1 (de) * 1989-04-17 1990-10-18 Mitsubishi Electric Corp Magnetische aufzeichnungsvorrichtung
US5402295A (en) * 1990-04-16 1995-03-28 Hitachi, Ltd. Magnetic recording head capable of defining narrow track width and magnetic recording apparatus using the same
JPH1049814A (ja) * 1996-07-30 1998-02-20 Mitsumi Electric Co Ltd 磁気ヘッド
US6771462B1 (en) * 1999-09-20 2004-08-03 Seagate Technology Llc Perpendicular recording head including concave tip
US20020171975A1 (en) * 2001-05-15 2002-11-21 Plumer Martin L. Writing element with no return path
US7616403B2 (en) * 2004-10-29 2009-11-10 Hitachi Global Storage Technologies Netherlands B.V. Winged design for reducing corner stray magnetic fields
US7764469B2 (en) * 2004-10-29 2010-07-27 Hitachi Global Storage Technologies Netherlands B.V. Notched shield and pole structure with slanted wing for perpendicular recording

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129909A (en) * 1979-03-22 1980-10-08 Olympus Optical Co Ltd Thermomagnetic recording and reproducing device
US4383284A (en) * 1979-12-14 1983-05-10 Tokyo Shibaura Denki Kabushiki Kaisha Perpendicular magnetic head and method of manufacturing the same
US4390916A (en) * 1980-11-20 1983-06-28 International Business Machines Corporation Single track magnetic head assembly
IT1129437B (it) * 1980-12-16 1986-06-04 Olivetti & Co Spa Testina magnetica
JPH0232682B2 (ja) * 1982-03-04 1990-07-23 Sony Corp Jikihetsudo
JPS5940314A (ja) * 1982-08-30 1984-03-06 Sony Corp 磁気ヘツド
JPS59178612A (ja) * 1983-03-29 1984-10-09 Sony Corp 磁気ヘツドおよびその製造方法
DE3421083A1 (de) * 1983-06-09 1984-12-13 Alps Electric Co., Ltd., Tokio/Tokyo Magnetkopf zur vertikalaufzeichnung
US4672494A (en) * 1983-09-01 1987-06-09 Matsushita Electric Industrial Co., Ltd. Magnetic head for effecting perpendicular magnetic recording
JPS60131604A (ja) * 1983-12-20 1985-07-13 Victor Co Of Japan Ltd 磁気記録再生素子
JPS60163215A (ja) * 1984-02-03 1985-08-26 Olympus Optical Co Ltd 補助磁極励磁型垂直磁気ヘツドの主磁極

Also Published As

Publication number Publication date
JPH0833977B2 (ja) 1996-03-29
EP0199422B1 (de) 1991-04-03
NL8501200A (nl) 1986-11-17
EP0199422A1 (de) 1986-10-29
JPS61265712A (ja) 1986-11-25
US4939609A (en) 1990-07-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL

8339 Ceased/non-payment of the annual fee