GB751842A - Method of and apparatus for the production of a magnetic recording tape - Google Patents
Method of and apparatus for the production of a magnetic recording tapeInfo
- Publication number
- GB751842A GB751842A GB19564/51A GB1956451A GB751842A GB 751842 A GB751842 A GB 751842A GB 19564/51 A GB19564/51 A GB 19564/51A GB 1956451 A GB1956451 A GB 1956451A GB 751842 A GB751842 A GB 751842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- tape
- guide
- deposition
- vacuum chamber
- 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
- 238000000576 coating method Methods 0.000 abstract 6
- 239000011248 coating agent Substances 0.000 abstract 5
- 230000008021 deposition Effects 0.000 abstract 4
- 239000000956 alloy Substances 0.000 abstract 3
- 229910045601 alloy Inorganic materials 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 239000004677 Nylon Substances 0.000 abstract 1
- 229920002292 Nylon 6 Polymers 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229920001778 nylon Polymers 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000010959 steel Substances 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/85—Coating a support with a magnetic layer by vapour deposition
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
751,842. Coating by deposition from the vapour state. RESEARCH INTERESTS, Ltd., [formerly POLLOPAS PATENTS, Ltd.]. Aug. 20, 1951 [Sept. 6, 1950], No. 19564/51. Class 82(2). [Also in Group XXXV] A magnetisable coating is deposited on a non-magnetic tapelike base member to form a magnetic recording tape by vapour deposition whilst the base is moving, the coating material at the moment of deposition being subjected to mechanical, magnetic or electrical oscillations at a frequency so high as to correspond to an inaudible frequency at the intended reproduction speed of the tape. The tape 30 which may be of nylon, perlon, or cellulose acetate, is passed from a reel 8, Fig. 4, over a guide 10 to a take-up reel 7. The guide 10 is mounted in a vacuum chamber 9 in which are also mounted an electrically heated vapourising trough 14 and a magneto-striction generator 12. The chamber 9 and inlet and outlet locks 31, 19 are connected to a diffusion pump 16 and the chamber 9 to a preliminary pump 22. In a modification, Fig. 5, the tape 30 passes in sealing engagement over a slot 27 in a guide on the outside of the vacuum chamber 9. The magnetizable coating may be of iron, steel, nickel or chromium and a further coating of quartz or glass may also be applied by vapour deposition. Alloy coatings may be formed by simultaneous evaporation of alloy components or by the use of a pre-formed alloy. Recording or pick-up heads may be arranged in the vacuum chamber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE751842X | 1950-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB751842A true GB751842A (en) | 1956-07-04 |
Family
ID=6652756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19564/51A Expired GB751842A (en) | 1950-09-06 | 1951-08-20 | Method of and apparatus for the production of a magnetic recording tape |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB751842A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3026215A (en) * | 1960-03-09 | 1962-03-20 | Fuji Photo Film Co Ltd | Process of producing magnetic sound recording material in which co-ni-fe ferrite columnar particles are placed in a direct current magnetic field and oriented by means of an ultrasonic wave and afterwards heated and cooled in the direct current magnetic field |
| US3117065A (en) * | 1959-09-02 | 1964-01-07 | Magnetic Film And Tape Company | Method and apparatus for making magnetic recording tape |
| US3148079A (en) * | 1961-10-12 | 1964-09-08 | Polytechnic Inst Brooklyn | Process for producing thin film ferrimagnetic oxides |
-
1951
- 1951-08-20 GB GB19564/51A patent/GB751842A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117065A (en) * | 1959-09-02 | 1964-01-07 | Magnetic Film And Tape Company | Method and apparatus for making magnetic recording tape |
| US3026215A (en) * | 1960-03-09 | 1962-03-20 | Fuji Photo Film Co Ltd | Process of producing magnetic sound recording material in which co-ni-fe ferrite columnar particles are placed in a direct current magnetic field and oriented by means of an ultrasonic wave and afterwards heated and cooled in the direct current magnetic field |
| US3148079A (en) * | 1961-10-12 | 1964-09-08 | Polytechnic Inst Brooklyn | Process for producing thin film ferrimagnetic oxides |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2671034A (en) | Method for producing magnetic recording tape | |
| GB751842A (en) | Method of and apparatus for the production of a magnetic recording tape | |
| ES483670A1 (en) | Amorphous magnetic films and a method of making such films. | |
| US4013534A (en) | Method of making a magnetic oxide film | |
| GB1272149A (en) | Improvements in and relating to the manufacture of magnetic record devices | |
| US2550916A (en) | Method of mounting a magnetic translating head | |
| JPS57200945A (en) | Magnetic recording medium | |
| US5104685A (en) | Method of producing magnetic recording medium | |
| GB1468634A (en) | Thin film magnetic heads | |
| GB884261A (en) | Improvements in and relating to magnetic pole pieces and methods of forming such pole pieces | |
| GB511164A (en) | Improvements in or relating to sound record carriers | |
| JPS5724022A (en) | Production of magnetic recording substance | |
| GB636578A (en) | Improvements in and relating to electromagnetic recording heads | |
| JPS5755531A (en) | Vertical magnetic recording medium | |
| JPS5629844A (en) | Manufacture for magnetic recording medium | |
| JPS5342009A (en) | Preparation of magnetic recording medium | |
| JPS53132310A (en) | Production of magnetic recording media | |
| US4724156A (en) | Method of manufacturing magnetic recording medium | |
| GB667011A (en) | Improved method of and apparatus for erasing signals from magnetic sound record carriers | |
| GB775050A (en) | Improvements in or relating to methods of recording signals | |
| JPS5431708A (en) | Production and production apparatus of magnetic recording media | |
| KR900002610B1 (en) | Magnetic recording carrier having high anticorrosion magnetic layer and its producing method | |
| GB783198A (en) | Improvements in or relating to apparatus for the reproduction of multi-track magnetic records | |
| JPS5684471A (en) | Vacuum evaporation | |
| JPS533975A (en) | Production of magnetic recording material by evaporation of inclinated incidence angle |