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:
May. 13, 2014
Filed:
May. 18, 2007
Applicant:
Daisuke Ito, Ageo, JP;
Inventor:
Daisuke Ito, Ageo, JP;
Assignee:
DIC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/254 (2013.01); C08F 290/06 (2006.01); C08G 59/20 (2006.01); G11B 7/257 (2013.01); C08G 59/62 (2006.01); C09D 163/10 (2006.01);
U.S. Cl.
CPC ...
G11B 7/254 (2013.01); C08F 290/06 (2013.01); C08G 59/20 (2013.01); G11B 7/257 (2013.01); C08G 59/62 (2013.01); C09D 163/10 (2013.01);
Abstract
An optical disc of the present invention includes at least a light reflection layer and a light transmission layer formed on a substrate, wherein recording and reading are performed by a laser beam through the light transmission layer, the light transmission layer is formed from a cured film of a ultraviolet-curable composition containing an epoxy acrylate resin obtained by reacting a half ester compound (A), which is obtained from a lactone-adduct of a hydroxyalkyl (meth)acrylate (a1) and a dibasic acid anhydride (a2), and an epoxy resin (B), and the film thickness of the light transmission layer is from 50 to 150 μm.