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:
Sep. 13, 2011
Filed:
Jan. 18, 2007
Hiroko Ohkura, Sagamihara, JP;
Eiko Hibino, Yokohama, JP;
Hiroshi Deguchi, Yokohama, JP;
Kazunori Ito, Yokohama, JP;
Hiroko Ohkura, Sagamihara, JP;
Eiko Hibino, Yokohama, JP;
Hiroshi Deguchi, Yokohama, JP;
Kazunori Ito, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide an optical recording medium in which error-causing short marks are produced in numbers small enough excellent high-recording characteristics and in which amorphous marks are uniform in shape. The optical recording medium includes: a first protective layer; a recording layer containing Sb as a main ingredient; a second protective layer; and a reflective layer, the first protective layer, the recording layer, the second protective layer and the reflective layer being provided in the order in which light passes through the medium for recording and reproduction of information, wherein the first protective layer and/or the second protective layer, both of which are in contact with the recording layer, are/is formed of a crystalline oxide.