Optical recording medium

Details Optical recording medium Optical recording medium

1996-06-17

1997-10-21

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 648, 428913, 43027014, 4304951, 430945, 369283, 369288, B32B 300

Patent

active

056794304

ABSTRACT:
A recording layer contains a dye A having a complex index of refraction at 780 nm whose real part n is 1.8-2.8 and imaginary part k is up to 0.15 and forming a thin film exhibiting an absorption spectrum whose half-value width is up to 170 nm and a dye B having a complex index of refraction at 630 nm or 650 nm whose real part n is 1.8-2.8 and imaginary part k is up to 0.2. An optical recording medium capable of writing and reading in a conventional wavelength region of about 780 nm and a shorter wavelength region of about 630 to 680 nm is obtained.

REFERENCES:
patent: 5486437 (1996-01-01), Iwamura et al.
patent: 5536548 (1996-07-01), Koji et al.
patent: 5547727 (1996-08-01), Suttleworth et al.

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