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:
Jan. 10, 2006
Filed:
Jul. 23, 2004
Mamoru Usami, Tokyo, JP;
Takeshi Umega, Tokyo, JP;
Hiroshi Kobayashi, Tokyo, JP;
Kazuki Suzawa, Tokyo, JP;
Mamoru Usami, Tokyo, JP;
Takeshi Umega, Tokyo, JP;
Hiroshi Kobayashi, Tokyo, JP;
Kazuki Suzawa, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An optical recording mediumcomprises a disc bodya white ink layerprovided on the label sideof the disc bodyand an ink receiving layerprovided on the surfaceof the white ink layerThe mean roughness (Ra) of the surfaceof the white ink layeris set not greater than 0.2 μm. A step radially extended is left on the surfaceof the ink receiving layerand set not greater than 1.0 μm. As the mean roughness (Ra) of the surfaceof the white ink layeris not greater than 0.2 μm or as the step on the ink receiving layeris not greater than 1.0 μm, high printing quality can be secured when printing is done with an ink-jet printer.