The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2007
Filed:
Sep. 11, 2002
Tetsuro Mizushima, Chuo-ku, JP;
Jiro Yoshinari, Chuo-ku, JP;
Isamu Kuribayashi, Chuo-ku, JP;
Masaki Aoshima, Chuo-ku, JP;
Koji Mishima, Chuo-ku, JP;
Tetsuro Mizushima, Chuo-ku, JP;
Jiro Yoshinari, Chuo-ku, JP;
Isamu Kuribayashi, Chuo-ku, JP;
Masaki Aoshima, Chuo-ku, JP;
Koji Mishima, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
A high-speed, write-once type optical recording medium, which utilizes laser light that is either blue or an even shorter wavelength, as well as an optical recording method and an optical recording apparatus for recording onto this optical recording medium. A high-speed, write-once type optical recording mediumhaving a recording layerand a light transmission layerformed sequentially on top of a support substrate, wherein the recording layeris formed by laminating first and second vice-recording layersA,B which include Al and Sb respectively as primary components, and irradiation of a laser light of blue wavelength from a laser light source, through the light transmission layerand onto the recording layer, causes diffusion and mixing of the Al and Sb contained within the first and second vice-recording layersA,B, and this mixing enables the formation of a recording mark based on an irreversible change in reflectance. The thickness of the recording layeris set to enable recording at a recording transfer rate of at least 35 Mbps.