GB1355895A - Method of copying magnetic recordings - Google Patents
Method of copying magnetic recordingsInfo
- Publication number
- GB1355895A GB1355895A GB4792472A GB4792472A GB1355895A GB 1355895 A GB1355895 A GB 1355895A GB 4792472 A GB4792472 A GB 4792472A GB 4792472 A GB4792472 A GB 4792472A GB 1355895 A GB1355895 A GB 1355895A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coercive force
- master
- copying
- cobalt
- slave
- 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
- 238000000034 method Methods 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 3
- 230000001419 dependent effect Effects 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 235000013980 iron oxide Nutrition 0.000 abstract 2
- 239000000696 magnetic material Substances 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001566 austenite Inorganic materials 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 150000001869 cobalt compounds Chemical class 0.000 abstract 1
- 229910000428 cobalt oxide Inorganic materials 0.000 abstract 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical group 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
- G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
Landscapes
- Paints Or Removers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7114533A NL7114533A (enrdf_load_stackoverflow) | 1971-10-21 | 1971-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1355895A true GB1355895A (en) | 1974-06-05 |
Family
ID=19814311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4792472A Expired GB1355895A (en) | 1971-10-21 | 1972-10-18 | Method of copying magnetic recordings |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5135132B2 (enrdf_load_stackoverflow) |
| BE (1) | BE790325A (enrdf_load_stackoverflow) |
| FR (1) | FR2156869B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1355895A (enrdf_load_stackoverflow) |
| IT (1) | IT969675B (enrdf_load_stackoverflow) |
| NL (1) | NL7114533A (enrdf_load_stackoverflow) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918013A (enrdf_load_stackoverflow) * | 1972-06-09 | 1974-02-18 | ||
| JPS5938642B2 (ja) * | 1975-02-04 | 1984-09-18 | 富士写真フイルム株式会社 | 熱磁気記録方法 |
| JPS5942362B2 (ja) * | 1975-02-10 | 1984-10-15 | 富士写真フイルム株式会社 | 熱磁気記録方法 |
| US4277806A (en) * | 1979-05-14 | 1981-07-07 | Eastman Technology, Inc. | Magnetic recording using recording media having temperature dependent coercivity |
| JPS63177317A (ja) * | 1987-01-19 | 1988-07-21 | Toshiba Corp | 磁気転写方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB963102A (en) * | 1962-04-02 | 1964-07-08 | Hitachi Ltd | Improvements relating to the duplication of magnetic recordings |
-
0
- BE BE790325D patent/BE790325A/xx unknown
-
1971
- 1971-10-21 NL NL7114533A patent/NL7114533A/xx not_active Application Discontinuation
-
1972
- 1972-10-18 GB GB4792472A patent/GB1355895A/en not_active Expired
- 1972-10-18 IT IT3064472A patent/IT969675B/it active
- 1972-10-19 JP JP10404972A patent/JPS5135132B2/ja not_active Expired
- 1972-10-20 FR FR7237234A patent/FR2156869B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5135132B2 (enrdf_load_stackoverflow) | 1976-09-30 |
| NL7114533A (enrdf_load_stackoverflow) | 1973-04-25 |
| IT969675B (it) | 1974-04-10 |
| BE790325A (fr) | 1973-04-19 |
| DE2249751A1 (de) | 1973-04-26 |
| FR2156869A1 (enrdf_load_stackoverflow) | 1973-06-01 |
| DE2249751B2 (de) | 1975-07-31 |
| FR2156869B1 (enrdf_load_stackoverflow) | 1976-08-20 |
| JPS4851610A (enrdf_load_stackoverflow) | 1973-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |