GB979528A - Magnetic transfer tapes - Google Patents

Magnetic transfer tapes

Info

Publication number
GB979528A
GB979528A GB2192862A GB2192862A GB979528A GB 979528 A GB979528 A GB 979528A GB 2192862 A GB2192862 A GB 2192862A GB 2192862 A GB2192862 A GB 2192862A GB 979528 A GB979528 A GB 979528A
Authority
GB
United Kingdom
Prior art keywords
magnetic
layer
adhesive layer
polyester
esters
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
GB2192862A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB979528A publication Critical patent/GB979528A/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
    • G11B5/702—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 characterised by the bonding agent
    • G11B5/7021—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 characterised by the bonding agent containing a polyurethane or a polyisocyanate
    • G11B5/7022—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 characterised by the bonding agent containing a polyurethane or a polyisocyanate containing mixtures of polyurethanes or polyisocyanates with other polymers
    • 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
    • G11B5/68—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
    • G11B5/702—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 characterised by the bonding agent
    • G11B5/7021—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 characterised by the bonding agent containing a polyurethane or a polyisocyanate

Landscapes

  • Paints Or Removers (AREA)

Abstract

979,528. Magnetic structures. AGFA A.G. June 6, 1962 [June 15, 1961], No. 21928/62. Heading H1H. A magnetic transfer tape comprises a temporary support of polyethylene terephthalate polyester on which is disposed a magnetic layer comprising magnetic particles in a binder consisting of polyurethane resin with a physically drying non-cross-linked resin, an adhesive layer being disposed on the magnetizable layer. The magnetic layer, which may contain γFe 2 O 3 particles, may be as disclosed in Specification 979,527, and various polyurethane resins and physically drying resins are specified. The adhesive layer may be formed from wax rubber adhesive, acrylonitrile rubber, polyacrylic esters, vinyl acetate copolymer, vinyl halide copolymers, vinyl esters and cellulose esters. The thicknesses of the magnetic layer and the adhesive layer may be 25Á and 5Á, respectively. In use the adhesive layer of the transfer tape is brought into contact with the final supportwhich may be P.V.C., cellulose acetate or metal-heated from the polyester side to about 100‹ C. with light pressure application, and then the polyester temporary support is stripped off. The magnetic coating may be applied to films, cheques, sorting cards, discs and drums. Specification 547,672 also is referred to.
GB2192862A 1961-06-15 1962-06-06 Magnetic transfer tapes Expired GB979528A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA37665A DE1204811B (en) 1961-06-15 1961-06-15 Process for the production of magnetizable transmission bands

Publications (1)

Publication Number Publication Date
GB979528A true GB979528A (en) 1965-01-06

Family

ID=6930356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2192862A Expired GB979528A (en) 1961-06-15 1962-06-06 Magnetic transfer tapes

Country Status (4)

Country Link
BE (1) BE618985A (en)
CH (1) CH417689A (en)
DE (1) DE1204811B (en)
GB (1) GB979528A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497411A (en) * 1968-03-14 1970-02-24 Ibm Method and materials for printing smooth magnetic layers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325555A1 (en) * 1983-07-15 1985-01-24 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING MAGNETIC RECORDING CARRIERS
DE3325556A1 (en) * 1983-07-15 1985-01-24 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING MAGNETIC RECORDING CARRIERS WITH REAR LAYER

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097704B (en) * 1956-12-20 1961-01-19 Du Pont Method of making a magnetic recording tape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497411A (en) * 1968-03-14 1970-02-24 Ibm Method and materials for printing smooth magnetic layers

Also Published As

Publication number Publication date
BE618985A (en) 1962-12-17
CH417689A (en) 1966-07-31
DE1204811B (en) 1965-11-11

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