Master disk device for transferring magnetic patterns to...

Details Master disk device for transferring magnetic patterns to... Master disk device for transferring magnetic patterns to...

2006-06-13

2006-06-13

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

C360S015000, C360S017000

Reexamination Certificate

active

07061702

ABSTRACT:
To enable alignment of a magnetic pattern of a pair of master disks and a magnetic recording medium, each of the master disks has at least a pair of alignment marks disposed outside the region of the magnetic pattern. The master disks can be optically transparent or semi-transparent. The master disks can be aligned while the alignment marks are externally observed.

REFERENCES:
patent: 6721113 (2004-04-01), Matsuda et al.
patent: 2002/0015246 (2002-02-01), Matsuda et al.
patent: 2002/0081018 (2002-06-01), Hamano et al.
patent: 11-175973 (1999-07-01), None
patent: 2000-067433 (2000-03-01), None
patent: 2000-67433 (2000-03-01), None
patent: 2001-34939 (2001-02-01), None
patent: 2001-351232 (2001-12-01), None
patent: 2002-197647 (2002-07-01), None
patent: 2002-197647 (2002-07-01), None
“Magnetic Printing Technology”; K. Sato et al.; Fuji Electric Journal vol. 75, No. 3; pp. 173-177; (2002); English Abstract.
Relevant portion of Austrian Search Report mailed Jul. 22, 2005.

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