DE2218306B2 - - Google Patents
Info
- Publication number
- DE2218306B2 DE2218306B2 DE2218306A DE2218306A DE2218306B2 DE 2218306 B2 DE2218306 B2 DE 2218306B2 DE 2218306 A DE2218306 A DE 2218306A DE 2218306 A DE2218306 A DE 2218306A DE 2218306 B2 DE2218306 B2 DE 2218306B2
- Authority
- DE
- Germany
- Prior art keywords
- layer
- thin
- magnetic
- protective layer
- recording medium
- 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.)
- Granted
Links
- 230000006378 damage Effects 0.000 claims description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims 26
- 230000005291 magnetic effect Effects 0.000 claims 16
- 229910052751 metal Inorganic materials 0.000 claims 11
- 239000002184 metal Substances 0.000 claims 11
- 239000011241 protective layer Substances 0.000 claims 10
- 239000000969 carrier Substances 0.000 claims 6
- 230000005294 ferromagnetic effect Effects 0.000 claims 6
- 238000000151 deposition Methods 0.000 claims 4
- 230000008021 deposition Effects 0.000 claims 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 3
- 239000010941 cobalt Substances 0.000 claims 3
- 229910017052 cobalt Inorganic materials 0.000 claims 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 3
- 229910052698 phosphorus Inorganic materials 0.000 claims 3
- 239000011574 phosphorus Substances 0.000 claims 3
- 239000000126 substance Substances 0.000 claims 3
- 239000010409 thin film Substances 0.000 claims 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 239000010408 film Substances 0.000 claims 2
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- 229910020599 Co 3 O 4 Inorganic materials 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 101100345589 Mus musculus Mical1 gene Proteins 0.000 claims 1
- 239000004962 Polyamide-imide Substances 0.000 claims 1
- 239000004642 Polyimide Substances 0.000 claims 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 238000005234 chemical deposition Methods 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- FQMNUIZEFUVPNU-UHFFFAOYSA-N cobalt iron Chemical compound [Fe].[Co].[Co] FQMNUIZEFUVPNU-UHFFFAOYSA-N 0.000 claims 1
- ZGDWHDKHJKZZIQ-UHFFFAOYSA-N cobalt nickel Chemical compound [Co].[Ni].[Ni].[Ni] ZGDWHDKHJKZZIQ-UHFFFAOYSA-N 0.000 claims 1
- 238000005566 electron beam evaporation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 230000002045 lasting effect Effects 0.000 claims 1
- 230000007774 longterm Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229920002312 polyamide-imide Polymers 0.000 claims 1
- 229920001721 polyimide Polymers 0.000 claims 1
- 229920006254 polymer film Polymers 0.000 claims 1
- 238000003892 spreading Methods 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 238000007740 vapor deposition Methods 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
-
- 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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Landscapes
- Magnetic Record Carriers (AREA)
- Electroplating Methods And Accessories (AREA)
- Physical Vapour Deposition (AREA)
- Thin Magnetic Films (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2218306A DE2218306C3 (de) | 1972-04-15 | 1972-04-15 | Magnetischer Aufzeichnungsträger |
| JP48040962A JPS4920081A (enrdf_load_stackoverflow) | 1972-04-15 | 1973-04-12 | |
| FR7313534A FR2180802B3 (enrdf_load_stackoverflow) | 1972-04-15 | 1973-04-13 | |
| GB1782173A GB1417521A (en) | 1972-04-15 | 1973-04-13 | Magnetic recording media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2218306A DE2218306C3 (de) | 1972-04-15 | 1972-04-15 | Magnetischer Aufzeichnungsträger |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2218306A1 DE2218306A1 (de) | 1973-10-25 |
| DE2218306B2 true DE2218306B2 (enrdf_load_stackoverflow) | 1980-10-16 |
| DE2218306C3 DE2218306C3 (de) | 1981-07-30 |
Family
ID=5842074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2218306A Expired DE2218306C3 (de) | 1972-04-15 | 1972-04-15 | Magnetischer Aufzeichnungsträger |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4920081A (enrdf_load_stackoverflow) |
| DE (1) | DE2218306C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2180802B3 (enrdf_load_stackoverflow) |
| GB (1) | GB1417521A (enrdf_load_stackoverflow) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5258518A (en) * | 1975-11-08 | 1977-05-14 | Nakamatsu Yoshiro | Air head recorder reproducer |
| JPS5258509A (en) * | 1975-11-08 | 1977-05-14 | Nakamatsu Yoshiro | Medium air pressing recorder reproducer |
| US4074330A (en) * | 1976-08-30 | 1978-02-14 | International Business Machines Corporation | Flexible disk storage apparatus |
| JPS60160001A (ja) * | 1984-01-31 | 1985-08-21 | Nippon Kogaku Kk <Nikon> | 炭化物で表面保護されたミラー |
| US4777068A (en) * | 1984-08-10 | 1988-10-11 | Canon Kabushiki Kaisha | Optical recording medium |
| JPS6180640A (ja) * | 1984-09-28 | 1986-04-24 | Canon Inc | 光学的記録媒体 |
| GB8827541D0 (en) * | 1988-11-25 | 1988-12-29 | Atomic Energy Authority Uk | Multilayer coatings |
-
1972
- 1972-04-15 DE DE2218306A patent/DE2218306C3/de not_active Expired
-
1973
- 1973-04-12 JP JP48040962A patent/JPS4920081A/ja active Pending
- 1973-04-13 FR FR7313534A patent/FR2180802B3/fr not_active Expired
- 1973-04-13 GB GB1782173A patent/GB1417521A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2218306C3 (de) | 1981-07-30 |
| FR2180802B3 (enrdf_load_stackoverflow) | 1976-04-02 |
| DE2218306A1 (de) | 1973-10-25 |
| GB1417521A (en) | 1975-12-10 |
| FR2180802A1 (enrdf_load_stackoverflow) | 1973-11-30 |
| JPS4920081A (enrdf_load_stackoverflow) | 1974-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8330 | Complete disclaimer |