G11B 7/2403 Layers; Shape, structure or physical properties thereof
Introduced: January 2013
Full Title
Full titles differ between systems:
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor > Record carriers characterised by shape, structure or physical properties, or by the selection of the material > Layers; Shape, structure or physical properties thereof
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation , reproducing using an optical beam at lower power ; Record carriers therefor (G11B11/00, G11B13/00 take precedence) > Record carriers characterised by shape, structure or physical properties, or by the selection of the material (characterised by the arrangement of information on the carrier G11B7/007) > Layers; Shape, structure or physical properties thereof
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2013.
Child Classifications
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- G11B 7/24035 Recording layers (substrates also used as recording layers G11B7/24047) since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24053 Protective topcoat layers lying opposite to the light entrance side, e.g. layers for preventing electrostatic charging since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24056 Light transmission layers lying on the light entrance side and being thinner than the substrate, e.g. specially adapted for Blu-ray® discs since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24065 Layers assisting in recording or reproduction below the optical diffraction limit, e.g. non-linear optical layers or structures (cover layers for near-field media G11B7/24059) since 2013 IPC+CPC Available in IPC and CPC
- G11B 7/24067 Combinations of two or more layers with specific interrelation since 2013 IPC+CPC Available in IPC and CPC