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. 06, 2017
Filed:
Mar. 06, 2014
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/02 (2006.01); G11B 7/24041 (2013.01); G11B 7/24038 (2013.01); G11B 7/258 (2013.01); G11B 7/26 (2006.01); G11B 7/24085 (2013.01); B32B 9/00 (2006.01); B32B 15/08 (2006.01);
U.S. Cl.
CPC ...
G11B 7/24041 (2013.01); G11B 7/24038 (2013.01); G11B 7/258 (2013.01); G11B 7/265 (2013.01); B32B 9/005 (2013.01); B32B 15/08 (2013.01); B32B 2250/05 (2013.01); B32B 2307/416 (2013.01); B32B 2429/02 (2013.01); G11B 7/24085 (2013.01); G11B 2220/20 (2013.01);
Abstract
There is provided an optical recording medium including: three reproduction layers, wherein reflectance R1, R2, and R3 of the three reproduction layers on a side of a surface irradiated with reproduction light is equal to or greater than 5%, and wherein any absolute value of a difference delta R between two selected from the reflectance R1, R2, and R3 is equal to or less than 7%.