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PCE
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IPC Main Group
G11B 23/00

Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PHYSICS
Class:
INFORMATION STORAGE
Subclass:
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

Related Keywords

CARTRIDGES for record carriersCASSETTES for record carriers

9 direct subcodes

Child Classifications

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  • G11B 23/14 providing ability to repeat location, e.g. using sprocket holes
  • G11B 23/16 Record carriers with single track for recording at spaced intervals along the track thereof, e.g. for speech or language training
  • G11B 23/18 Record carriers with multiple tracks, e.g. with complementary and partial tracks such as paired "stereo" tracks
  • G11B 23/28 indicating prior or unauthorised use
  • G11B 23/5 Reconditioning of record carriers; Cleaning of record carriers