G11B7/002 - CPC Classification

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 Recording, reproducing or erasing systems characterised by the shape or form of the carrier

• G11B7/0025 » with cylinders or cylinder-like carriers {or cylindrical sections or flat carriers loaded onto a cylindrical surface} , e.g. truncated cones 10
• G11B7/003 » with webs {, filaments or wires} , e.g. belts, spooled tapes or films of quasi-infinite extent 56
• G11B7/0033 » with cards {or other card-like flat carriers, e.g. flat sheets of optical film} 106
• G11B7/0037 » with discs 553

Recent Application in this class: