Loading patent…
OwnerYoshitaka Hayashi, Toshishige Fujii +2inventors
InventorsYoshitaka Hayashi, Toshishige Fujii, Noboru Sasa, Masayuki Fujiwara
Estimating the term…
A write-once-read-many optical recording medium enabling excellent recording and reproducing properties at a wavelength of blue-laser wavelengths or shorter, i.e. 500 nm or less, particularly at wavelengths of near 405 nm and high density recording. To this end, a write-once-read-many optical recording medium of the invention comprises a recording layer using a material represented by BiOx (0<x<1.5), in which a recorded mark comprises crystal of Bi and/or crystal of a Bi oxide. Another write-once-read-many optical recording medium comprises a recording layer which comprises Bi, oxygen, and M (M represents at least one element selected from Mg, Al, Cr, Mn, Co, Fe, Cu, Zn, Li, Si, Ge, Zr, Ti, Hf, Sn, Mo, V, Nb, Y, and Ta), in which a recorded mark comprises crystal of the elements contained in the recording layer and crystal of an oxide of the elements.
A write-once-read-many optical recording medium comprising:
A write-once-read-many optical recording medium comprising:
A write-once-read-many optical recording medium comprising
A sputtering target comprising:
An optical recording medium comprising:
Dependencies are inferred from the claim text.