Master disk for magnetic transfer

Details Master disk for magnetic transfer Master disk for magnetic transfer

2006-03-17

2009-08-18

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S013350, C428S848500, C360S131000

Reexamination Certificate

active

07577079

ABSTRACT:
The present invention provides a master disk with high flexibility and high close contact property with a slave disk to be transferred, which bears information to be transferred by magnetic transfer. When incident angle of X-ray is designated by θ, electroforming is performed such that X-ray diffraction pattern of the master substrate11has a 200 plane reflection at 2θ=51.0° to 53.0°, and a 220 plane reflection at 2θ=75.5° to 76.5°, and the reflection intensity ratio of X-ray diffraction of the 220 plane with respect to the 200 plane is I[220]/I[200]=2 to 30.

REFERENCES:
patent: 6759183 (2004-07-01), Nagao et al.
patent: 2001/0028964 (2001-10-01), Nagao et al.
patent: 2003/0198833 (2003-10-01), Nagao et al.
patent: 2005/0018335 (2005-01-01), Fujiwara et al.
patent: 1688927 (2006-08-01), None
patent: 2001-256644 (2001-09-01), None

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