Optical recording medium and a method of manufacturing the same

Details Optical recording medium and a method of manufacturing the same Optical recording medium and a method of manufacturing the same

2005-11-22

2005-11-22

Dye, Rena (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S064200, C428S064900, C369S287000, C369S288000

Reexamination Certificate

active

06967050

ABSTRACT:
Constructed is an optical recording medium which is so formed as to have excellent surface flatness and with respect to which information is recorded or reproduced with the use of a near-field optical system. The optical recording medium is one which performs at least one of recording and reproduction of information by irradiation of light. The optical recording medium has a substrate1which has fine concavities and convexities2formed on the surface on a side where irradiation of light is performed, and a formed film layer having at least a recording layer and having a fine concavities and convexities surface reflecting the fine concavities and convexities2in itself. The optical recording medium also has a light transmission flattenable film4which is so formed on the formed film layer as to have the fine concavities and convexities surface buried therein, and the surface of which is polished and which has a single-layer or a multi-layer structure having a hardness enabling the film to be polished, has a transmission characteristic with respect to the irradiated light to thereby permits transmission of a light irradiated with respect to this optical recording medium.

REFERENCES:
patent: 4650742 (1987-03-01), Goto et al.
patent: 5614287 (1997-03-01), Sekiya et al.
patent: 5635267 (1997-06-01), Yamada et al.
patent: 5972459 (1999-10-01), Kawakubo et al.
patent: 6166856 (2000-12-01), Araki et al.
patent: 6187431 (2001-02-01), Katsuragawa
patent: 6312780 (2001-11-01), Kasami et al.

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