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:
Nov. 23, 2004
Filed:
Jun. 19, 2003
Motoyasu Terao, Hinode, JP;
Yuko Tsuchiya, Tokorozawa, JP;
Takuya Matsumoto, Hachioji, JP;
Kyoko Kojima, Kunitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The information recording medium accosting to the preferred embodiment of the present invention achieves high-speed, high-density recording. The layer, in which ultra-particles made from an optical absorption metal, dielectric, or recording material are formed into regular arrays, is deposited. Resonant Plasmon excitation and resonance absorption of ultra-particles enable the edges of the recorded marks to be identified clearly and intense absorption to occur only in the given layer depending on the wavelength in the case of the multi-layer medium achieving high-density, large-capacity recording.