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:
Feb. 14, 2012
Filed:
Jan. 08, 2009
Takashi Iwamura, Kanagawa, JP;
Mitsuaki Oyamada, Kanagawa, JP;
Daisuke Ueda, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The invention is able to enhance a recording speed. In the invention, a recording mark (RM) composed of a cavity is formed by vaporizing a two-photon absorbing material by a two-photon absorption reaction as an embodiment of a photoreaction against a recording light beam (L) as recording light to be condensed at the time of recording information. Also, in a recording layer (), the information is reproduced on the basis of a return light beam (L) formed by modulation of a readout light beam (L) irradiated as prescribed readout light at the time of reproducing inform in conformity with the presence of absence of the recording mark (RM). Then, in the recording layer (), in view of the fact that the a two-photon absorbing particle having a two-photon absorbing material coordinated with a metal fine particle (MN) is dispersed in a binder resin configuring the recording layer (), the two-photon absorbing material having a two-photon absorbing characteristic is disposed as a vaporizable material in the vicinity of the metal fine particle (MN) dispersed in the binder resin.