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. 15, 2011
Filed:
Jan. 28, 2009
Yoshihiro Noda, Tokyo, JP;
Shigeyuki Furomoto, Tokyo, JP;
Yoshihiro Noda, Tokyo, JP;
Shigeyuki Furomoto, Tokyo, JP;
Mitsubishi Kagaku Media Co., Ltd., Tokyo, JP;
Abstract
In a single-sided incident type optical recording medium having a plurality of dye containing recording layers, sufficient reflectance and excellent recording characteristics necessary to record or read information in or from a dye containing recording layer positioning farther from a side from which a light beam comes in can be obtained. The optical recording medium has a first substrate () having a guide groove, a first dye containing recording layer (), a semitransparent reflective layer (), an intermediate layer (), a second dye containing recording layer (), a reflective layer () and a second substrate () having a guide groove. Information is recorded or read in or from the first dye containing recording layer () and the second dye containing recording layer () by irradiating the light beam from the first substrate's side. The depth of the guide groove on the second substrate is within a range from 1/100×λ to ⅙×λ where λ represents the recording/reading wavelength.