FR2205701B1 - - Google Patents
Info
- Publication number
- FR2205701B1 FR2205701B1 FR7239317A FR7239317A FR2205701B1 FR 2205701 B1 FR2205701 B1 FR 2205701B1 FR 7239317 A FR7239317 A FR 7239317A FR 7239317 A FR7239317 A FR 7239317A FR 2205701 B1 FR2205701 B1 FR 2205701B1
- Authority
- FR
- France
- 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
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
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
- G11B5/3146—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers
- G11B5/3153—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding magnetic layers including at least one magnetic thin film coupled by interfacing to the basic magnetic thin film structure
-
- 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
- G11B5/2452—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 where the dimensions of the effective gap are controlled
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
- Thin Magnetic Films (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7239317A FR2205701B1 (fr) | 1972-11-07 | 1972-11-07 | |
BE136807A BE806212A (fr) | 1972-11-07 | 1973-10-17 | Transducteurs magnetiques perfectionnes |
HUIE592A HU169854B (fr) | 1972-11-07 | 1973-10-23 | |
US409613A US3867368A (en) | 1972-11-07 | 1973-10-25 | Read-write magnetic transducer having a composite structure comprising a stack of thin films |
NL7314869A NL7314869A (fr) | 1972-11-07 | 1973-10-30 | |
GB5069173A GB1453288A (en) | 1972-11-07 | 1973-10-31 | Record-replay magnetic transducers |
IT70254/73A IT999733B (it) | 1972-11-07 | 1973-11-06 | Trasduttore magnetico particolarmente per testine magnetiche |
ES420322A ES420322A1 (es) | 1972-11-07 | 1973-11-07 | Perfeccionamientos en transductores magneticos realizados en capas delgadas. |
DE2355672A DE2355672C3 (de) | 1972-11-07 | 1973-11-07 | Magnetkopf in Dünnschichttechnik |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7239317A FR2205701B1 (fr) | 1972-11-07 | 1972-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2205701A1 FR2205701A1 (fr) | 1974-05-31 |
FR2205701B1 true FR2205701B1 (fr) | 1977-08-05 |
Family
ID=9106735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7239317A Expired FR2205701B1 (fr) | 1972-11-07 | 1972-11-07 |
Country Status (9)
Country | Link |
---|---|
US (1) | US3867368A (fr) |
BE (1) | BE806212A (fr) |
DE (1) | DE2355672C3 (fr) |
ES (1) | ES420322A1 (fr) |
FR (1) | FR2205701B1 (fr) |
GB (1) | GB1453288A (fr) |
HU (1) | HU169854B (fr) |
IT (1) | IT999733B (fr) |
NL (1) | NL7314869A (fr) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2264350B1 (fr) * | 1974-03-11 | 1978-09-29 | Cii | |
JPS51117020A (en) * | 1975-04-07 | 1976-10-14 | Hitachi Ltd | Magnetic head and production method of it |
US4191983A (en) * | 1977-06-24 | 1980-03-04 | Applied Magnetics Corporation | Thin film magnetic head assembly having a thin film magnetic transducer encapsulated in insulating bonding material |
US4321641A (en) * | 1977-09-02 | 1982-03-23 | Magnex Corporation | Thin film magnetic recording heads |
US4195323A (en) * | 1977-09-02 | 1980-03-25 | Magnex Corporation | Thin film magnetic recording heads |
GB2003647B (en) * | 1977-09-02 | 1982-05-06 | Magnex Corp | Thin film magnetic recording heads |
US4156882A (en) * | 1977-12-15 | 1979-05-29 | Texas Instruments Incorporated | Magnetic transducer |
US4374403A (en) * | 1979-06-27 | 1983-02-15 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording and reproducing system |
DE3424651A1 (de) * | 1983-11-04 | 1985-05-15 | Control Data Corp., Minneapolis, Minn. | Magnetwandlerkopf |
JPH07114007B2 (ja) * | 1987-12-04 | 1995-12-06 | ディジタル イクイプメント コーポレーション | 記録ヘッドの積層構造磁極 |
US5108837A (en) * | 1987-12-04 | 1992-04-28 | Digital Equipment Corporation | Laminated poles for recording heads |
US4897749A (en) * | 1988-03-16 | 1990-01-30 | Magnetic Peripherals Inc. | Combination probe and ring head for vertical recording |
US5065326A (en) * | 1989-08-17 | 1991-11-12 | Caterpillar, Inc. | Automatic excavation control system and method |
JPH0383213A (ja) * | 1989-08-24 | 1991-04-09 | Matsushita Electric Ind Co Ltd | 薄膜磁気ヘッド |
US5132859A (en) * | 1990-08-23 | 1992-07-21 | International Business Machines Corporation | Thin film structures for magnetic recording heads |
US6259583B1 (en) | 1998-09-16 | 2001-07-10 | International Business Machines, Corporation | Laminated yoke head with a domain control element |
US7369360B2 (en) * | 2004-11-05 | 2008-05-06 | Seagate Technology Llc | Perpendicular recording head having controlled permeability and saturation moment |
US8329320B2 (en) * | 2008-11-13 | 2012-12-11 | Headway Technologies, Inc. | Laminated high moment film for head applications |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344237A (en) * | 1967-09-26 | Desposited film transducing apparatus and method op producing the apparatus | ||
US3549825A (en) * | 1967-09-18 | 1970-12-22 | Ncr Co | Magnetic transducer with planar spiral coil extending into the gap |
US3564558A (en) * | 1968-08-26 | 1971-02-16 | Sperry Rand Corp | High-density magnetic recording scheme |
US3611417A (en) * | 1969-07-30 | 1971-10-05 | Sperry Rand Corp | High-density magnetic recording method |
BE758053A (fr) * | 1969-10-28 | 1971-04-01 | Commissariat Energie Atomique | Tete magnetique integree et procede de fabrication de ladite tete |
US3700827A (en) * | 1970-01-31 | 1972-10-24 | Nippon Electric Co | Magnetic head including thin magnetic film separated by a gap spacer |
US3639699A (en) * | 1970-02-27 | 1972-02-01 | Gen Electric | Magnetic transducer having a composite magnetic core structure |
-
1972
- 1972-11-07 FR FR7239317A patent/FR2205701B1/fr not_active Expired
-
1973
- 1973-10-17 BE BE136807A patent/BE806212A/fr unknown
- 1973-10-23 HU HUIE592A patent/HU169854B/hu unknown
- 1973-10-25 US US409613A patent/US3867368A/en not_active Expired - Lifetime
- 1973-10-30 NL NL7314869A patent/NL7314869A/xx not_active Application Discontinuation
- 1973-10-31 GB GB5069173A patent/GB1453288A/en not_active Expired
- 1973-11-06 IT IT70254/73A patent/IT999733B/it active
- 1973-11-07 ES ES420322A patent/ES420322A1/es not_active Expired
- 1973-11-07 DE DE2355672A patent/DE2355672C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT999733B (it) | 1976-03-10 |
FR2205701A1 (fr) | 1974-05-31 |
NL7314869A (fr) | 1974-05-09 |
DE2355672A1 (de) | 1974-05-16 |
ES420322A1 (es) | 1976-03-16 |
DE2355672B2 (de) | 1980-01-31 |
BE806212A (fr) | 1974-02-15 |
HU169854B (fr) | 1977-02-28 |
DE2355672C3 (de) | 1980-10-09 |
US3867368A (en) | 1975-02-18 |
GB1453288A (en) | 1976-10-20 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
CD | Change of name or company name | ||
TP | Transmission of property | ||
ST | Notification of lapse |