JPS56153518A - Transducer - Google Patents
TransducerInfo
- Publication number
- JPS56153518A JPS56153518A JP4852681A JP4852681A JPS56153518A JP S56153518 A JPS56153518 A JP S56153518A JP 4852681 A JP4852681 A JP 4852681A JP 4852681 A JP4852681 A JP 4852681A JP S56153518 A JPS56153518 A JP S56153518A
- Authority
- JP
- Japan
- Prior art keywords
- transducer
- 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
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
- G11B5/187—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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8007453A FR2480015A1 (fr) | 1980-04-02 | 1980-04-02 | Transducteur magnetique a entrefer de grande dimension variable pour la lecture et l'ecriture des informations contenues dans un support magnetique |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56153518A true JPS56153518A (en) | 1981-11-27 |
Family
ID=9240464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4852681A Pending JPS56153518A (en) | 1980-04-02 | 1981-04-02 | Transducer |
Country Status (5)
Country | Link |
---|---|
US (1) | US4386383A (ja) |
EP (1) | EP0040994B1 (ja) |
JP (1) | JPS56153518A (ja) |
DE (1) | DE3168857D1 (ja) |
FR (1) | FR2480015A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57123516A (en) * | 1981-01-23 | 1982-08-02 | Matsushita Electric Ind Co Ltd | Thin-film magnetic head |
JPS5819717A (ja) * | 1981-07-30 | 1983-02-04 | Fujitsu Ltd | 垂直磁化記録再生用ヘッド |
US4935832A (en) * | 1987-04-01 | 1990-06-19 | Digital Equipment Corporation | Recording heads with side shields |
US5170303A (en) * | 1990-04-30 | 1992-12-08 | Seagate Technology Inc. | Inductive thin film head having improved readback characteristics |
JP2683503B2 (ja) * | 1993-09-02 | 1997-12-03 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 磁性膜構造 |
JPH09293209A (ja) * | 1996-04-26 | 1997-11-11 | Fujitsu Ltd | 薄膜磁気ヘッド、磁気記録装置及び薄膜磁気ヘッドの製造方法 |
US5940250A (en) * | 1997-10-21 | 1999-08-17 | Maxtor Corporation | Disk drive head having a read wide/write narrow architecture |
US6765756B1 (en) | 1999-03-12 | 2004-07-20 | Western Digital (Fremont), Inc. | Ultra-short yoke and ultra-low stack height writer and method of fabrication |
US6865056B1 (en) * | 1999-10-05 | 2005-03-08 | Seagate Technology Llc | Longitudinal magnetic recording heads with variable-length gaps |
US6510022B1 (en) * | 2000-02-15 | 2003-01-21 | International Business Machines Corporation | Method for shaping pole pieces of magnetic heads by chemical mechanical polishing |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830412A (ja) * | 1971-08-21 | 1973-04-21 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB746537A (en) * | 1953-03-04 | 1956-03-14 | Clevite Corp | Improvements in or relating to magnetic transducer heads |
US3353168A (en) * | 1964-04-09 | 1967-11-14 | Potter Instrument Co Inc | Wide-record narrow-read magnetic head |
BE758053A (fr) * | 1969-10-28 | 1971-04-01 | Commissariat Energie Atomique | Tete magnetique integree et procede de fabrication de ladite tete |
GB1357400A (en) * | 1971-11-03 | 1974-06-19 | Ibm | Magnetic recording and reproducing apparatus |
FR2297475A1 (fr) * | 1975-01-10 | 1976-08-06 | Cii | Perfectionnements exportes aux structures de tetes magnetiques du type dit " integre " |
-
1980
- 1980-04-02 FR FR8007453A patent/FR2480015A1/fr active Granted
-
1981
- 1981-03-12 US US06/242,924 patent/US4386383A/en not_active Expired - Fee Related
- 1981-03-20 DE DE8181400433T patent/DE3168857D1/de not_active Expired
- 1981-03-20 EP EP81400433A patent/EP0040994B1/fr not_active Expired
- 1981-04-02 JP JP4852681A patent/JPS56153518A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4830412A (ja) * | 1971-08-21 | 1973-04-21 |
Also Published As
Publication number | Publication date |
---|---|
EP0040994A1 (fr) | 1981-12-02 |
FR2480015B1 (ja) | 1984-09-21 |
US4386383A (en) | 1983-05-31 |
DE3168857D1 (en) | 1985-03-28 |
FR2480015A1 (fr) | 1981-10-09 |
EP0040994B1 (fr) | 1985-02-13 |
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