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. 14, 2011
Filed:
Oct. 16, 2007
Hisayuki Yamatsu, Tokyo, JP;
Norihiro Tanabe, Saitama, JP;
Hiroshi Uchiyama, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical information recording and reproducing deviceirradiates initialization light Lto an optical information recording mediumhaving a recording layermade of photopolymerization-type photopolymer in advance to bring about the photopolymerization or the photocrosslinking to perform the initialization processing, and condenses a recording light beam Lhaving a comparatively strong light intensity to a target position in the recording layerand increases the temperature thereof to transubstantiate the target position to record a recording mark RM at the time of recording information, and condenses a reading light beam Lhaving a comparatively weak light intensity to the target position and receives a returned light beam Lhaving a sufficient light amount reflected by the recording mark RM at the time of reproducing information, which makes it possible to reliably record the recording mark RM and stably read out the recording mark RM.