G
PHYSICS
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G11
INFORMATION STORAGE
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G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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5/00
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
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G11B5/62
Record carriers characterised by the selection of the material
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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
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G11B5/739
Magnetic recording media substrates
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G11B5/73923
Organic polymer substrates
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G11B5/73927
Polyester substrates, e.g. polyethylene terephthalate
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G11B5/73935
characterised by roughness or surface features, e.g. by added particles
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