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US 8,470,514 B2Granted
Information recording medium and method for manufacturing the same
AssigneePanasonic Corporation
InventorsHaruhiko Habuta, Noboru Yamada
Life of this patent
Estimating the term…
Abstract
A low-cost information recording medium is provided by which good recording quality can be obtained even when information is recorded thereon in a high density using a blue laser. The recording medium has a recording layer which comprises Sb, O and M. A content of O atoms is 30 atom % or more but not more than 55 atom %, a content of M atoms is 5 atom % or more but not more than 35 atom %, and a content of Sb atoms is 20 atom % or more but not more than 55 atom %. The recording layer does not contain Au, Pt and Pd.
Claims7
An information recording medium comprising
- an information layer on a substrate,
- wherein the information layer has a recording layer, on and from which information can be recorded and reproduced by irradiating the recording layer with a laser beam,
- wherein the recording layer comprises Sb, O and M,
- wherein M is a combination of Ge and at least one element selected from a group consisting of Zn, Ni, Te, C and Cu,
- wherein a content of O atoms is 35 atom %, a content of Ge is 10 atom %, a content of the at least one element selected from the group consisting of Zn, Ni, Te, and Cu is 10 atom %, and a content of Sb atoms is 45 atom %, based on the total number of the Sb atoms, the O atoms, and the M atoms contained in the recording layer being 100 atom %,
- wherein the recording layer comprises the Sb atoms, the O atoms and the M atoms in an amount of 80 atom % or more in total, and
- wherein the recording layer does not contain Au, Pt and Pd.
4 more elements
Dependencies are inferred from the claim text.