Methods and apparatus for physically patterning...

Details Methods and apparatus for physically patterning... Methods and apparatus for physically patterning...

G - Physics

11

B

G11B 11/00 (2006.01) G01N 33/53 (2006.01) G01N 35/00 (2006.01) G11B 5/012 (2006.01) G11B 5/62 (2006.01) G11B 5/82 (2006.01) G11B 7/252 (2006.01) G11B 13/04 (2006.01)

Patent

CA 2382694

Methods and apparatus for physically patterning readable non-operational structures (30, 32, 34) on an optical disc (10) are presented. In one embodiment, the non-operational structures are magnetic beads (60) and the method comprises applying external magnetic fields (44) to the optical disc (10). In another embodiment, the nonoperational structures have net-electric charge.

On décrit des procédés et un appareil qui permettent de former physiquement sur un disque optique (10) des structures (30, 32, 34) non opérationnelles lisibles. Dans une forme de réalisation, les structures non opérationnelles sont des microbilles magnétiques (60), le procédé consistant à appliquer des champs magnétiques extérieurs (44) sur le disque (10). Dans une autre forme de réalisation, les structures non opérationnelles ont une charge électrique nette.

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