GB1197661A - Magnetic Recording Material. - Google Patents

Magnetic Recording Material.

Info

Publication number
GB1197661A
GB1197661A GB4782/68A GB478268A GB1197661A GB 1197661 A GB1197661 A GB 1197661A GB 4782/68 A GB4782/68 A GB 4782/68A GB 478268 A GB478268 A GB 478268A GB 1197661 A GB1197661 A GB 1197661A
Authority
GB
United Kingdom
Prior art keywords
particles
copolymer
carbon
layer
size
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
GB4782/68A
Other languages
English (en)
Inventor
Gerard Domice
Jean-Pierre Deriaud
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Publication of GB1197661A publication Critical patent/GB1197661A/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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
    • G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
    • G11B5/7358—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2 specially adapted for achieving a specific property, e.g. average roughness [Ra]

Landscapes

  • Paints Or Removers (AREA)
GB4782/68A 1967-01-30 1968-01-30 Magnetic Recording Material. Expired GB1197661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR92918A FR1531397A (fr) 1967-01-30 1967-01-30 Nouvelles bandes pour enregistrement magnétique

Publications (1)

Publication Number Publication Date
GB1197661A true GB1197661A (en) 1970-07-08

Family

ID=8624525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4782/68A Expired GB1197661A (en) 1967-01-30 1968-01-30 Magnetic Recording Material.

Country Status (3)

Country Link
BE (1) BE709254A (fi)
FR (1) FR1531397A (fi)
GB (1) GB1197661A (fi)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975102A (fi) * 1972-11-20 1974-07-19
JPS52107105U (fi) * 1977-01-20 1977-08-15
US4534999A (en) * 1983-07-15 1985-08-13 Basf Aktiengesellschaft Production of magnetic recording media having a backing coating
EP0171185A2 (en) * 1984-07-09 1986-02-12 Hitachi Maxell Ltd. Magnetic recording medium
US4645723A (en) * 1984-02-18 1987-02-24 Basf Aktiengesellschaft Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced
US5330784A (en) * 1992-11-12 1994-07-19 Basf Magnetics Gmbh Process of producing a flexible magnetic recording media having a backing coating
US5346761A (en) * 1992-05-21 1994-09-13 Basf Magnetics Gmbh Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica
US5419959A (en) * 1991-05-31 1995-05-30 Basf Magnetics Gmbh Magnetic recording medium having an infra-red light transparent balkcoat layer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4975102A (fi) * 1972-11-20 1974-07-19
JPS5437482B2 (fi) * 1972-11-20 1979-11-15
JPS52107105U (fi) * 1977-01-20 1977-08-15
JPS5813444Y2 (ja) * 1977-01-20 1983-03-16 日立マクセル株式会社 磁気記録テ−プ
US4534999A (en) * 1983-07-15 1985-08-13 Basf Aktiengesellschaft Production of magnetic recording media having a backing coating
US4645723A (en) * 1984-02-18 1987-02-24 Basf Aktiengesellschaft Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced
EP0171185A2 (en) * 1984-07-09 1986-02-12 Hitachi Maxell Ltd. Magnetic recording medium
EP0171185A3 (en) * 1984-07-09 1986-05-07 Hitachi Maxell Ltd. Magnetic recording medium
US5419959A (en) * 1991-05-31 1995-05-30 Basf Magnetics Gmbh Magnetic recording medium having an infra-red light transparent balkcoat layer
US5346761A (en) * 1992-05-21 1994-09-13 Basf Magnetics Gmbh Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica
US5330784A (en) * 1992-11-12 1994-07-19 Basf Magnetics Gmbh Process of producing a flexible magnetic recording media having a backing coating

Also Published As

Publication number Publication date
BE709254A (fi) 1968-05-16
FR1531397A (fr) 1968-07-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees