GB1431348A - Magnetic transducer structures - Google Patents
Magnetic transducer structuresInfo
- Publication number
- GB1431348A GB1431348A GB3160773A GB3160773A GB1431348A GB 1431348 A GB1431348 A GB 1431348A GB 3160773 A GB3160773 A GB 3160773A GB 3160773 A GB3160773 A GB 3160773A GB 1431348 A GB1431348 A GB 1431348A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- layers
- conducting
- insulating
- magnetic layer
- 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
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
-
- 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
- G11B5/17—Construction or disposition of windings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Coils Or Transformers For Communication (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Abstract
1431348 Magnetic transducers COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 3 July 1973 [3 July 1972] 31607/73 Heading G5R A magnetic transducer comprises interleaved conducting and insulating helices built up from stacked layers 2, 5, 7, 9 and 3, 4, 6 respectively on a dielectric substrate 10 and forming an insulated winding passing between magnetic layers 11, 12. The transducer is built up by vacuum deposition of successive magnetic (Fe/ Ni alloy), conducting (copper) and insulating (silica) layers through apertures (1); (2, 5, 7, 8, 9); (3, 4, 6) of a mask (50), Fig. 3 (not shown), in a sequence starting with the first magnetic layer 11 and continuing with conducting and insulating layers, the former partially overlapping to form a rectangular winding, the latter defining a central window so that the final, magnetic layer 12 may connect to the first magnetic layer 11. The assembly is abraded at 56 to form an air-gap between the layers 11, 12. Reference has been directed by the Comptroller to Specification 1,331,437.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7223939A FR2209154B1 (en) | 1972-07-03 | 1972-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1431348A true GB1431348A (en) | 1976-04-07 |
Family
ID=9101238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3160773A Expired GB1431348A (en) | 1972-07-03 | 1973-07-03 | Magnetic transducer structures |
Country Status (9)
Country | Link |
---|---|
US (1) | US3846842A (en) |
BE (1) | BE801184A (en) |
DE (1) | DE2333812C3 (en) |
ES (1) | ES416545A1 (en) |
FR (1) | FR2209154B1 (en) |
GB (1) | GB1431348A (en) |
HU (1) | HU169204B (en) |
IT (1) | IT991646B (en) |
NL (1) | NL7309181A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2297475A1 (en) * | 1975-01-10 | 1976-08-06 | Cii | IMPROVEMENTS EXPORTED TO STRUCTURES OF MAGNETIC HEADS OF THE TYPE CALLED "INTEGRATED" |
US4078300A (en) * | 1975-01-10 | 1978-03-14 | Compagnie Internationale Pour L'informatique | Method of making an integrated magnetic head having pole-pieces of a reduced frontal width |
US4092688A (en) * | 1975-07-31 | 1978-05-30 | Matsushita Electric Industrial Co. Ltd. | Multi-track thin film magnetic head |
DE2721201A1 (en) * | 1977-05-11 | 1978-11-16 | Siemens Ag | METHOD FOR MANUFACTURING INTEGRATED MAGNETIC HEAD STRUCTURES |
US4219854A (en) * | 1978-12-21 | 1980-08-26 | International Business Machines Corporation | Thin film magnetic head assembly |
US4353102A (en) * | 1979-07-04 | 1982-10-05 | Matsushita Electric Industrial Co., Ltd. | Thin-film magnetic head |
FR2468183A1 (en) * | 1979-10-25 | 1981-04-30 | Cii Honeywell Bull | INTEGRATED MAGNETIC TRANSDUCER |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344237A (en) * | 1967-09-26 | Desposited film transducing apparatus and method op producing the apparatus | ||
US3089106A (en) * | 1960-08-15 | 1963-05-07 | Wheelock Signals Inc | Printed circuit coil |
GB1018550A (en) * | 1963-09-05 | 1966-01-26 | Ampex | Improved parametric reproducing head |
US3514851A (en) * | 1967-04-03 | 1970-06-02 | Control Data Corp | Method of manufacturing a magnetic head structure |
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 |
DE1952402A1 (en) * | 1969-10-17 | 1971-04-22 | Philips Patentverwaltung | Magnetic head |
BE758053A (en) * | 1969-10-28 | 1971-04-01 | Commissariat Energie Atomique | INTEGRATED MAGNETIC HEAD AND METHOD FOR MANUFACTURING THE SAID HEAD |
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
- 1972-07-03 FR FR7223939A patent/FR2209154B1/fr not_active Expired
-
1973
- 1973-06-20 BE BE132495A patent/BE801184A/en not_active IP Right Cessation
- 1973-06-21 HU HUIE579A patent/HU169204B/hu unknown
- 1973-06-25 US US00373460A patent/US3846842A/en not_active Expired - Lifetime
- 1973-07-02 NL NL7309181A patent/NL7309181A/xx not_active Application Discontinuation
- 1973-07-02 IT IT68958/73A patent/IT991646B/en active
- 1973-07-03 DE DE2333812A patent/DE2333812C3/en not_active Expired
- 1973-07-03 GB GB3160773A patent/GB1431348A/en not_active Expired
- 1973-07-03 ES ES416545A patent/ES416545A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2333812B2 (en) | 1980-07-10 |
IT991646B (en) | 1975-08-30 |
ES416545A1 (en) | 1976-02-16 |
BE801184A (en) | 1973-10-15 |
HU169204B (en) | 1976-10-28 |
DE2333812A1 (en) | 1974-01-24 |
FR2209154B1 (en) | 1975-04-11 |
FR2209154A1 (en) | 1974-06-28 |
NL7309181A (en) | 1974-01-07 |
DE2333812C3 (en) | 1981-11-19 |
US3846842A (en) | 1974-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |