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. 05, 2012
Filed:
Dec. 03, 2008
Ippei Maekawa, Gunma, JP;
Tomonori Endo, Gunma, JP;
Mamoru Uchida, Gunma, JP;
Yuki Takei, Gunma, JP;
Yuaki Shin, Gunma, JP;
Ippei Maekawa, Gunma, JP;
Tomonori Endo, Gunma, JP;
Mamoru Uchida, Gunma, JP;
Yuki Takei, Gunma, JP;
Yuaki Shin, Gunma, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
Disc-shaped information recording medium comprising optical penetrating substrate having colored underlayer and ink receipt layer in this order on the principal surface of one side of the substrate, wherein the ink receipt layer contains inorganic fine particles, a binder, and a crosslinking agent, and wherein a pore diameter distribution of a gap of the ink receipt layer has a maximum peak in the range of 30 nm or more when the ink receipt layer is measured with a mercury porosimetry method. Since the shrinkage force functioning in the pores of the gaps of the ink receipt layer weakens, a disc-shaped information recording medium having a reduced occurrence of warp is provided.