Patent classifications
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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11/00
Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
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G11B11/10
using recording by magnetic means; or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
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G11B11/105
using a beam of light or a magnetic field for recording; by change of magnetisation; and a beam of light for reproducing,; i.e. magneto-optical,; e.g. light-induced thermomagnetic recording,; spin magnetisation recording,; Kerr; or Faraday; effect reproducing
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G11B11/10502
characterised by the transducing operation to be executed
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G11B11/10528
Shaping of magnetic domains, e.g. form, dimensions
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G11B11/10528

Magnetic Information Label and Use Thereof
20210341850 · 2021-11-04 ·

The present invention provides the ability to record information on a stationary magnetic information label. Magnetic information label is designed to record information on it by heating special areas of the label with electromagnetic radiation up to or above Curie temperature and/or magnetization relaxation temperature; such magnetic information label has a magnetic layer attached to a magnetic layer carrier. Product of thermal conductivity coefficient by density and specific thermal capacity of the magnetic layer carrier in such a label should be greater than product of thermal conductivity coefficient by density and specific thermal capacity of the magnetic layer. The technical result of the invention is to provide non-uniform heating of the magnetic layer with spatially structured electromagnetic radiation.