DE2209811A1 - - Google Patents
Info
- Publication number
- DE2209811A1 DE2209811A1 DE19722209811 DE2209811A DE2209811A1 DE 2209811 A1 DE2209811 A1 DE 2209811A1 DE 19722209811 DE19722209811 DE 19722209811 DE 2209811 A DE2209811 A DE 2209811A DE 2209811 A1 DE2209811 A1 DE 2209811A1
- Authority
- DE
- Germany
- Prior art keywords
- tape
- layer
- magnetic
- daughter
- magnetic tape
- 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
- 230000005291 magnetic effect Effects 0.000 claims description 45
- 239000002245 particle Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000006249 magnetic particle Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 4
- 229940090961 chromium dioxide Drugs 0.000 claims description 3
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 claims description 3
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 claims description 3
- 230000001427 coherent effect Effects 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000012876 carrier material Substances 0.000 claims 1
- 230000002996 emotional effect Effects 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000005294 ferromagnetic effect Effects 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000005381 magnetic domain Effects 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 229910000423 chromium oxide Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005298 paramagnetic effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- G11B5/86—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
- G11B2005/0002—Special dispositions or recording techniques
- G11B2005/0005—Arrangements, methods or circuits
- G11B2005/0021—Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12014971A | 1971-03-02 | 1971-03-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2209811A1 true DE2209811A1 (https=) | 1972-09-21 |
| DE2209811B2 DE2209811B2 (de) | 1974-02-21 |
| DE2209811C3 DE2209811C3 (de) | 1974-09-26 |
Family
ID=22388540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722209811 Expired DE2209811C3 (de) | 1971-03-02 | 1972-03-01 | Magnetbandkopiergerät |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5210369B1 (https=) |
| CA (1) | CA983162A (https=) |
| DE (1) | DE2209811C3 (https=) |
| FR (1) | FR2128368B1 (https=) |
| GB (1) | GB1377447A (https=) |
| IT (1) | IT948020B (https=) |
| NL (1) | NL7202702A (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55129908A (en) * | 1979-03-15 | 1980-10-08 | Olympus Optical Co Ltd | Thermomagnetic recording and reproducing device |
| JPS55129909A (en) * | 1979-03-22 | 1980-10-08 | Olympus Optical Co Ltd | Thermomagnetic recording and reproducing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496304A (en) * | 1966-12-05 | 1970-02-17 | Magnavox Co | Double transfer curie-point and magnetic bias tape copy system |
| US3541577A (en) * | 1967-06-28 | 1970-11-17 | Bell & Howell Co | Method of curie point recording |
-
1972
- 1972-02-24 GB GB850472A patent/GB1377447A/en not_active Expired
- 1972-02-24 CA CA135,543A patent/CA983162A/en not_active Expired
- 1972-02-25 FR FR7206542A patent/FR2128368B1/fr not_active Expired
- 1972-02-29 IT IT2121972A patent/IT948020B/it active
- 1972-03-01 DE DE19722209811 patent/DE2209811C3/de not_active Expired
- 1972-03-01 NL NL7202702A patent/NL7202702A/xx not_active Application Discontinuation
- 1972-03-02 JP JP47021907A patent/JPS5210369B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL7202702A (https=) | 1972-09-05 |
| GB1377447A (en) | 1974-12-18 |
| IT948020B (it) | 1973-05-30 |
| CA983162A (en) | 1976-02-03 |
| JPS5210369B1 (https=) | 1977-03-23 |
| FR2128368B1 (https=) | 1975-03-21 |
| DE2209811B2 (de) | 1974-02-21 |
| FR2128368A1 (https=) | 1972-10-20 |
| DE2209811C3 (de) | 1974-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| 8339 | Ceased/non-payment of the annual fee |