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:
Oct. 12, 2007
Takeshi Otsu, Gunma, JP;
Fumi Hara, Gunma, JP;
Shinichi Kojo, Gunma, JP;
Atsuo Shimizu, Gunma, JP;
Motomitsu Hagiwara, Gunma, JP;
Takeshi Otsu, Gunma, JP;
Fumi Hara, Gunma, JP;
Shinichi Kojo, Gunma, JP;
Atsuo Shimizu, Gunma, JP;
Motomitsu Hagiwara, Gunma, JP;
Taiyo Yuden Co., Ltd, Tokyo, JP;
Abstract
An optical information recording medium includes an optical disk body including a light-transmitting substrate, a recording layer provided on a main surface of the light-transmitting substrate over a region in which pre-grooves are formed and a portion of a region in which dummy grooves are formed, and a reflecting layer provided over the recording layer and a region of the light-transmitting substrate in which the recording layer is not provided; and an ink receiving layer provided on the label surface side of the optical disc body. The dummy grooves provided in at least a portion of the region in which the dye material is not applied have a pitch larger than that of the pre-grooves, are shallower than that of the pre-grooves, or have half-width less than that of the pre-grooves.