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:
Dec. 11, 2007
Filed:
Mar. 20, 2003
Takeshi Yamasaki, Kanagawa, JP;
Tomomi Yukumoto, Chiba, JP;
Takeshi Yamasaki, Kanagawa, JP;
Tomomi Yukumoto, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical recording medium capable of suppressing film thickness irregularity of interlayer between a plurality of optical recording layers and effects of warps of a transfer substrate and arising of dusts and burrs problems, etc. and a method of producing the optical recording medium are provided. An optical recording medium has a structure wherein at least two optical recording layers () stacked via an interlayerand a light transmitting layerprovided on the optical recording layer are provided at least one surface of a medium substrate, for performing recording and reproducing by irradiating a light to the optical recording layers () through the light transmitting layer, and the interlayer includes at least one layer of ultraviolet curing resin film made to be a film in advance and is a film formed with an uneven shape corresponding to a recording pit or an uneven shape () to be a guide groove on its surface and cured.