Magnetic transfer master disk and method for manufacturing...

Details Magnetic transfer master disk and method for manufacturing... Magnetic transfer master disk and method for manufacturing...

2011-07-05

2011-07-05

Van, Luan V (Department: 1724)

Electrolysis: processes, compositions used therein, and methods

Electroforming or composition therefor

Recording device

Reexamination Certificate

active

07972490

ABSTRACT:
A magnetic transfer master disk including a magnetic layer and exhibiting excellent shape stability of a protrusion/recess pattern is provided. An initial layer formed of a conductive film is formed on a surface of a master on which a pattern of minute protrusions/recesses is formed, and then a magnetic layer (principal layer) is formed on the initial layer, and then, a metal layer is formed by electroforming. A duplicate in which the initial layer, the magnetic layer and the metal layer have been integrated is peeled off from the master, thereby obtaining a magnetic transfer master disk, which is a duplicate in which the magnetic layer and the initial layer are deposited on the protruded/recessed surface of the metal layer.

REFERENCES:
patent: 3904488 (1975-09-01), Nosker et al.
patent: 4341613 (1982-07-01), Prusak et al.
patent: 4401521 (1983-08-01), Ohmura et al.
patent: 5015338 (1991-05-01), Tabuchi et al.
patent: 6759183 (2004-07-01), Nagao et al.
patent: 7294251 (2007-11-01), Nishikawa et al.
patent: 7648620 (2010-01-01), Che
patent: 2001/0028964 (2001-10-01), Nagao et al.
patent: 2003/0198833 (2003-10-01), Nagao et al.
patent: 2005/0045481 (2005-03-01), Kawaguchi et al.
patent: 2006/0177569 (2006-08-01), Fujiwara et al.
patent: 2010/0075179 (2010-03-01), Kido
patent: 2010/0215788 (2010-08-01), Kido
patent: 1 132 898 (2001-09-01), None
patent: 2001-256644 (2001-09-01), None
patent: 2005-100605 (2005-04-01), None
patent: 2006-216181 (2006-08-01), None
patent: 2007-301732 (2007-11-01), None
patent: 2001-0088331 (2001-09-01), None
Japanese Office Action issued Nov. 18, 2010 in corresponding Japanese Application No. 2007-308793.

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