GB651645A - Improvements in or relating to magnetic record tapes - Google Patents

Improvements in or relating to magnetic record tapes

Info

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
Application number
GB4260/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brush Development Co
Original Assignee
Brush Development Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brush Development Co filed Critical Brush Development Co
Publication of GB651645A publication Critical patent/GB651645A/en
Expired legal-status Critical Current

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.
GB4260/48A 1947-02-14 1948-02-13 Improvements in or relating to magnetic record tapes Expired GB651645A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (10)

* Cited by examiner, † Cited by third party
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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