GB717573A - Improvements in magnetic sound recording heads - Google Patents
Improvements in magnetic sound recording headsInfo
- Publication number
- GB717573A GB717573A GB2619/51A GB261951A GB717573A GB 717573 A GB717573 A GB 717573A GB 2619/51 A GB2619/51 A GB 2619/51A GB 261951 A GB261951 A GB 261951A GB 717573 A GB717573 A GB 717573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound recording
- recording heads
- magnetic sound
- magnetic
- feb
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 abstract 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 abstract 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
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
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE287606X | 1950-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717573A true GB717573A (en) | 1954-10-27 |
Family
ID=6059352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2619/51A Expired GB717573A (en) | 1950-02-06 | 1951-02-02 | Improvements in magnetic sound recording heads |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2809237A (de) |
| CH (1) | CH287606A (de) |
| FR (2) | FR1032056A (de) |
| GB (1) | GB717573A (de) |
| IT (1) | IT472736A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2933565A (en) * | 1953-04-15 | 1960-04-19 | Siemens Ag | Magnetic transducers |
| US3268987A (en) * | 1959-05-11 | 1966-08-30 | Adams Edmond | Method of making transducer head cores |
| US3079470A (en) * | 1959-12-21 | 1963-02-26 | Armour Res Found | Magnetic transducer head |
| JPS53127707A (en) * | 1977-04-13 | 1978-11-08 | Nippon Gakki Seizo Kk | Production of laminated type head core |
| US4188649A (en) * | 1977-12-05 | 1980-02-12 | Ibm Corporation | Magnetic head having a jagged-edged gap, and method for producing such head |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2452529A (en) * | 1941-10-24 | 1948-10-26 | Hartford Nat Bank & Trust Co | Magnet core |
| US2452530A (en) * | 1943-05-15 | 1948-10-26 | Hartford Nat Bank & Trust Co | Magnetic core |
| US2452531A (en) * | 1943-05-31 | 1948-10-26 | Hartford Nat Bank & Trust Co | Process of manufacturing a magnetic material and magnetic core |
| US2493742A (en) * | 1945-08-22 | 1950-01-10 | Brush Dev Co | Magnetic transducing core for magnetic record transducers |
| CH274288A (de) * | 1948-11-12 | 1951-03-31 | Alexander Dr Egerer Karl | Magnetton-Aufzeichnungs- und Wiedergabekopf für bandförmige Tonträger. |
| US2536260A (en) * | 1948-12-30 | 1951-01-02 | Rca Corp | Device for reproducing magnetic records |
| US2592652A (en) * | 1950-02-18 | 1952-04-15 | Bell Telephone Labor Inc | Magnetic transducer head |
-
0
- IT IT472736D patent/IT472736A/it unknown
-
1951
- 1951-02-01 CH CH287606D patent/CH287606A/de unknown
- 1951-02-02 GB GB2619/51A patent/GB717573A/en not_active Expired
- 1951-02-03 US US209250A patent/US2809237A/en not_active Expired - Lifetime
- 1951-02-05 FR FR1032056D patent/FR1032056A/fr not_active Expired
-
1952
- 1952-03-11 FR FR62575D patent/FR62575E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR62575E (fr) | 1955-06-15 |
| FR1032056A (fr) | 1953-06-29 |
| IT472736A (de) | |
| CH287606A (de) | 1952-12-15 |
| US2809237A (en) | 1957-10-08 |
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