GB651645A - Improvements in or relating to magnetic record tapes - Google Patents
Improvements in or relating to magnetic record tapesInfo
- Publication number
- GB651645A GB651645A GB4260/48A GB426048A GB651645A GB 651645 A GB651645 A GB 651645A GB 4260/48 A GB4260/48 A GB 4260/48A GB 426048 A GB426048 A GB 426048A GB 651645 A GB651645 A GB 651645A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- reel
- sound
- backing member
- magnetisable material
- 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
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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
-
- 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
- G11B5/633—Record carriers characterised by the selection of the material of cinematographic films or slides with integral magnetic track
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
651,645. Magnetic sound records. BRUSH DEVELOPMENT CO. Feb. 13, 1948, No. 4260. Convention date, Feb. 14, 1947. [Class 40 (ii)] In a sound film, such as a sound and picture film, having a magnetic sound track, a magnetic tape 15 consisting of a stratum of magnetisable material on a backing member is brought into contact with a film 10, outside the sprocket holes 12, and united thereto by the use of heat or pressure, said magnetisable material having greater adhesion to the film than to the backing member under predetermined conditions, said backing member being then removed to leave the magnetisable material. adhering to the film. Each of the opposite marginal portions of the film 10 may have tapes 15 affixed in order to provide for even reeling of the film. The tapes 15 may be fed from a reel or reels 41 to pass round a slotted guidemember 43, and brought into contact, by means of pressure rollers 45, 46, with the film 10 which is drawn from reel 31 to reel 32 by means of a sprocket-wheel 35. Heat may be applied by means of a heated roller 47, while a cement or similar adhesive may be applied by means of a roller 51 immersed in a fluid adhesive in a tank 52. Specification 676,761 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US651645XA | 1947-02-14 | 1947-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB651645A true GB651645A (en) | 1951-04-04 |
Family
ID=22060749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4260/48A Expired GB651645A (en) | 1947-02-14 | 1948-02-13 | Improvements in or relating to magnetic record tapes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB651645A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE934731C (en) * | 1952-11-11 | 1955-11-03 | Tefi Appbau Dr Daniel K G | Process for making magnetic sound tapes |
US2791310A (en) * | 1952-06-28 | 1957-05-07 | Rca Corp | Character printing and encoding apparatus |
US2799609A (en) * | 1955-01-24 | 1957-07-16 | Harold R Dalton | Magnetic transducing webs and method of manufacture |
DE968270C (en) * | 1950-10-10 | 1958-01-30 | Klangfilm Gmbh | Method of copying and apparatus for the transfer of the image by photographic exposure in the same pass as the sound onto image-sound films with magnetic sound recording |
US2997417A (en) * | 1954-12-23 | 1961-08-22 | Dirks Gerhard | Method of preparing record carrier |
US3078183A (en) * | 1959-04-07 | 1963-02-19 | Lew W Karalus | Adhesive tape with permanent magnets therein |
US3222205A (en) * | 1963-02-15 | 1965-12-07 | Lew W Karalus | Recording tape |
FR2406654A1 (en) * | 1977-10-21 | 1979-05-18 | Pyral Soc | TRANSFER PROCESS OF MAGNETIC LAYERS ON A SUPPORT AND MATERIALS FOR IMPLEMENTING THIS PROCESS |
FR2494882A1 (en) * | 1980-11-27 | 1982-05-28 | Kodak Pathe | Magnetic layer transfer material - with top layer of thermoplastic photohardenable polymer, for cinematographic film applications |
-
1948
- 1948-02-13 GB GB4260/48A patent/GB651645A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE968270C (en) * | 1950-10-10 | 1958-01-30 | Klangfilm Gmbh | Method of copying and apparatus for the transfer of the image by photographic exposure in the same pass as the sound onto image-sound films with magnetic sound recording |
US2791310A (en) * | 1952-06-28 | 1957-05-07 | Rca Corp | Character printing and encoding apparatus |
DE934731C (en) * | 1952-11-11 | 1955-11-03 | Tefi Appbau Dr Daniel K G | Process for making magnetic sound tapes |
US2997417A (en) * | 1954-12-23 | 1961-08-22 | Dirks Gerhard | Method of preparing record carrier |
US2799609A (en) * | 1955-01-24 | 1957-07-16 | Harold R Dalton | Magnetic transducing webs and method of manufacture |
US3078183A (en) * | 1959-04-07 | 1963-02-19 | Lew W Karalus | Adhesive tape with permanent magnets therein |
US3222205A (en) * | 1963-02-15 | 1965-12-07 | Lew W Karalus | Recording tape |
FR2406654A1 (en) * | 1977-10-21 | 1979-05-18 | Pyral Soc | TRANSFER PROCESS OF MAGNETIC LAYERS ON A SUPPORT AND MATERIALS FOR IMPLEMENTING THIS PROCESS |
US4273603A (en) | 1977-10-21 | 1981-06-16 | La Societe Pyral | Process for transfer of a magnetic layer from a temporary to a permanent support |
FR2494882A1 (en) * | 1980-11-27 | 1982-05-28 | Kodak Pathe | Magnetic layer transfer material - with top layer of thermoplastic photohardenable polymer, for cinematographic film applications |
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