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:
Mar. 20, 2012
Filed:
Feb. 15, 2006
Hiroshi Miura, Yamato, JP;
Nobuaki Toyoshima, Yokohama, JP;
Yoshitaka Hayashi, Yokohama, JP;
Suguru Sangu, Machida, JP;
Noriyuki Iwata, Fujisawa, JP;
Hiroshi Miura, Yamato, JP;
Nobuaki Toyoshima, Yokohama, JP;
Yoshitaka Hayashi, Yokohama, JP;
Suguru Sangu, Machida, JP;
Noriyuki Iwata, Fujisawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide an optical recording medium containing a laminated structure of a first deformable material layer containing a phase-change material that absorbs light at a recording wavelength to generate heat and is subject to exothermic melting and deformation and a second deformable material layer containing a material which contains a silicon oxide (SiOx; 0<x≦2) that transmits light and is subject to thermal deformation and alteration. After information is recorded, the thickness of the first deformable material layer is changed according to the recorded information making center of the recorded marks thicker than the ends and the second deformable material layer is deformed and altered corresponding to the concave-convex-pattern formed on the first deformable material layer based on the recorded information and when the information is reproduced, the first deformable material layer is altered from solid to molten state.