DE68908762D1 - Thermomagnetischer Aufnahmekopf. - Google Patents

Thermomagnetischer Aufnahmekopf.

Info

Publication number: DE68908762D1
Authority: DE; Germany
Prior art keywords: recording head; thermomagnetic recording; thermomagnetic; head; recording
Prior art date: 1988-04-27
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 - Fee Related

Application number

DE89401126T

Other languages

English (en)

Other versions

DE68908762T2 (de

Inventor

Philippe Bousquet

Jean-Claude Lehureau

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.)

Thales SA

Original Assignee

Thomson CSF SA

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.)

1988-04-27

Filing date

1989-04-21

Publication date

1993-10-07

1989-04-21 Application filed by Thomson CSF SA filed Critical Thomson CSF SA

1993-10-07 Application granted granted Critical

1993-10-07 Publication of DE68908762D1 publication Critical patent/DE68908762D1/de

1993-12-23 Publication of DE68908762T2 publication Critical patent/DE68908762T2/de

2009-04-22 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
- 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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
- 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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/49—Fixed mounting or arrangements, e.g. one head per track

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Magnetic Heads (AREA)

DE89401126T 1988-04-27 1989-04-21 Thermomagnetischer Aufnahmekopf. Expired - Fee Related DE68908762T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR888805593A FR2630852B1 (fr)	1988-04-27	1988-04-27	Tete d'enregistrement thermomagnetique

Publications (2)

Publication Number	Publication Date
DE68908762D1 true DE68908762D1 (de)	1993-10-07
DE68908762T2 DE68908762T2 (de)	1993-12-23

Family

ID=9365734

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE89401126T Expired - Fee Related DE68908762T2 (de)	1988-04-27	1989-04-21	Thermomagnetischer Aufnahmekopf.

Country Status (6)

Country	Link
US (1)	US5025341A (de)
EP (1)	EP0341120B1 (de)
JP (1)	JP2809688B2 (de)
KR (1)	KR0161964B1 (de)
DE (1)	DE68908762T2 (de)
FR (1)	FR2630852B1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2645315B1 (fr) *	1989-03-29	1991-05-31	Commissariat Energie Atomique	Tete magnetique de lecture a magnetoresistance pour enregistrement perpendiculaire et procede de realisation d'une telle tete
FR2645314B1 (fr) *	1989-03-29	1991-05-31	Commissariat Energie Atomique	Tete magnetique a magnetoresistance pour enregistrement longitudinal et procede de realisation d'une telle tete
FR2648607B1 (fr) *	1989-06-16	1995-12-15	Thomson Csf	Tete magnetique integree d'enregistrement
US5189580A (en) *	1989-06-30	1993-02-23	Ampex Corporation	Ultra small track width thin film magnetic transducer
FR2723242B1 (fr) *	1994-07-26	1996-08-30	Thomson Csf	Tete magnetique a element saturable et dispositif matriciel comportant un ensemble de tetes magnetiques
US5880899A (en) *	1997-02-25	1999-03-09	International Business Machines Corporation	Removal of raised irregularities on a data storage disk with controlled abrasion by a magnetoresistive head
US5768070A (en)	1997-05-14	1998-06-16	International Business Machines Corporation	Horizontal thin film write, MR read head
US6043960A (en) *	1997-12-22	2000-03-28	International Business Machines Corporation	Inverted merged MR head with track width defining first pole tip component constructed on a side wall
JP3799168B2 (ja) *	1998-08-20	2006-07-19	株式会社日立グローバルストレージテクノロジーズ	磁気記録再生装置
FR2786345B1 (fr)	1998-11-24	2001-02-09	Thomson Csf	Dispositif de cryptage quantique
US6493183B1 (en) *	2000-06-29	2002-12-10	International Business Machines Corporation	Thermally-assisted magnetic recording system with head having resistive heater in write gap
US7149173B2 (en) *	2000-10-17	2006-12-12	Thales	Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (fr) *	2001-05-15	2003-08-29	Thomson Csf	Gyrometre a fibre optique
US6894871B2 (en) *	2002-08-07	2005-05-17	Western Digital (Fremont), Inc.	Technique for reducing pole tip protrusion in a magnetic write head and GMR stripe temperature in an associated read head structure utilizing one or more internal diffuser regions
US7023660B2 (en) *	2003-07-21	2006-04-04	Hitachi Global Storage Technologies Netherlands B.V.	Localized pole tip heating device for magnetic head for hard disk drive
US7268973B2 (en) *	2003-07-24	2007-09-11	Hitachi Global Storage Technologies Netherlands, B.V.	Perpendicular magnetic head having thermally assisted recording element
US6999277B2 (en)	2003-07-30	2006-02-14	Hitachi Global Storage Technologies Netherlands, B.V.	Magnetic head having thermally assisted write head with heater element, and protective sacrificial layer
US6940693B2 (en)	2003-09-29	2005-09-06	Hitachi Global Storage Technologies Netherlands, B.V.	Magnetic head having media heating device that is electrically connected to magnetic pole piece
JP2006142046A (ja) *	2006-01-23	2006-06-08	Morita Mfg Co Ltd	管路洗浄方法及び装置、この管路洗浄装置を備えた診療装置
US8523312B2 (en)	2010-11-08	2013-09-03	Seagate Technology Llc	Detection system using heating element temperature oscillations
MY165816A (en)	2010-11-17	2018-04-27	Seagate Technology Llc	Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB770127A (en) *	1955-05-16	1957-03-13	Simon Levin	Improvements in methods and apparatus for recording and reproducing magnetic information
GB882779A (en) *	1959-07-29	1961-11-22	Nat Res Dev	Improvements in or relating to multi-track magnetic heads
US3686467A (en) *	1969-08-08	1972-08-22	Iit Res Inst	Magnetic transducer system and method
JPS54146620A (en) *	1978-05-09	1979-11-16	Matsushita Electric Ind Co Ltd	Magnetic record head
JPS5573913A (en) *	1978-11-30	1980-06-04	Victor Co Of Japan Ltd	Magnetic head
US4322763A (en) *	1980-03-05	1982-03-30	Spin Physics, Inc.	Magnetic head having a controllable high-permeability tunnel within a low-permeability sleeve
DE3330075A1 (de) *	1983-08-19	1985-02-28	Siemens AG, 1000 Berlin und 8000 München	Schreib-/lese-magnetkopf fuer ein senkrecht zu magnetisierendes aufzeichnungsmedium
FR2588406B1 (fr) *	1985-10-04	1994-03-25	Thomson Csf	Tete d'enregistrement thermomagnetique et procede de realisation

1988
- 1988-04-27 FR FR888805593A patent/FR2630852B1/fr not_active Expired - Fee Related
1989
- 1989-04-21 EP EP89401126A patent/EP0341120B1/de not_active Expired - Lifetime
- 1989-04-21 DE DE89401126T patent/DE68908762T2/de not_active Expired - Fee Related
- 1989-04-25 KR KR1019890005418A patent/KR0161964B1/ko not_active IP Right Cessation
- 1989-04-25 US US07/342,879 patent/US5025341A/en not_active Expired - Lifetime
- 1989-04-27 JP JP1109007A patent/JP2809688B2/ja not_active Expired - Fee Related

Also Published As

Publication number	Publication date
KR0161964B1 (ko)	1998-12-15
EP0341120A1 (de)	1989-11-08
JP2809688B2 (ja)	1998-10-15
KR890016510A (ko)	1989-11-29
US5025341A (en)	1991-06-18
DE68908762T2 (de)	1993-12-23
FR2630852A1 (fr)	1989-11-03
JPH0242611A (ja)	1990-02-13
EP0341120B1 (de)	1993-09-01
FR2630852B1 (fr)	1994-06-17

Publication	Publication Date	Title
DE68905687D1 (de)	1993-05-06	Kopfbaenderung.
DE68921712D1 (de)	1995-04-20	Aufzeichnungsvorrichtung mit abnehmbarem Aufzeichnungskopf.
DE68908762D1 (de)	1993-10-07	Thermomagnetischer Aufnahmekopf.
DE68919599D1 (de)	1995-01-12	Optischer Aufnahmekopf.
NL192638B (nl)	1997-07-01	Magnetische transductorkop.
DE3879305D1 (de)	1993-04-22	Magnetkopf.
DE68920512D1 (de)	1995-02-23	Plattenspieler.
DE68910570D1 (de)	1993-12-16	Magneto-optische Wiedergabeköpfe.
DE68921527D1 (de)	1995-04-13	Magnetooptischer Aufzeignungsträger.
DE68921575D1 (de)	1995-04-13	Aufnahmegerät.
DE68924635D1 (de)	1995-11-30	Datenaufzeichnungsgerät.
DE68915064D1 (de)	1994-06-09	Dünnschicht-Magnetkopf.
DE68917903D1 (de)	1994-10-06	Magneto-optischer Aufzeichnungsträger.
DE3886569D1 (de)	1994-02-10	Magnetkopf.
DE3679657D1 (de)	1991-07-11	Magnetkopf.
DE3888287D1 (de)	1994-04-14	Film-Magnetkopf.
DE68923059D1 (de)	1995-07-20	Aufzeichnungsvorrichtung.
DE3879799D1 (de)	1993-05-06	Magnetkopf.
NL194175B (nl)	2001-04-02	Magnetische transducentkop.
DE68922076D1 (de)	1995-05-11	Aufzeichnungsgerät.
DE68909835D1 (de)	1993-11-18	Dünnschichtmagnetkopf.
DE68910615D1 (de)	1993-12-16	Magnetkopf.
DE3586873D1 (de)	1993-01-14	Magnetkopfanordnung.
DE69014939D1 (de)	1995-01-26	Dünschichtmagnetkopf.
DE68912062D1 (de)	1994-02-17	Plattenaufzeichnungsgerät.

Legal Events

Date	Code	Title	Description
1994-09-29	8364	No opposition during term of opposition
2006-02-09	8339	Ceased/non-payment of the annual fee