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:
Mar. 17, 2015
Filed:
Sep. 25, 2013
Fujifilm Corporation, Minato-ku, Tokyo, JP;
Toshiyuki Kitahara, Odawara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
An optical information recording mediumincludes a plurality of recording layers, and intermediate layerseach provided between the recording layers. The optical information recording mediumis configured such that first and second intermediate layersA,B having different refractive indices are arranged alternately with one recording layerinterposed therebetween, that ((n3−n1)/(n3+n1))≦0.001 is satisfied, where n1 represents a refractive index of the recording layer, and n3 represents a refractive index of the second intermediate layerB, and that when a recording layeris irradiated with a recording beam RB and generates heat by absorption of the recording beam RB, an interface (reflection interfaceA) between the recording layerand the first intermediate layerA adjacent to this recording layerundergoes a change of shape to record information (recording spot M).