Master information carrier for magnetic transfer

Details Master information carrier for magnetic transfer Master information carrier for magnetic transfer

2005-04-12

2005-04-12

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

Reexamination Certificate

active

06879452

ABSTRACT:
A master information carrier includes a base sheet provided with a pattern representing a signal and a magnetic layer formed on the pattern. A transfer magnetic field is applied to a slave medium in a close contact with the master information carrier to magnetically transfer the signal from the master information carrier to the slave medium. The coefficient of thermal expansion of the base sheet of the master information carrier is in the range of 5×10−6/° C. to 25×10−6/° C., and the thermal expansion difference in different directions of the base sheet of the master information carrier is not larger than 8×10−6/° C.

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patent: 1 258 866 (2002-11-01), None
patent: 1 271 486 (2003-01-01), None
patent: 10-269568 (1998-10-01), None

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