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. 07, 2006
Filed:
Apr. 29, 2004
Hidetake Itoh, Tokyo, JP;
Naoki Hayashida, Tokyo, JP;
Kenji Yoneyama, Tokyo, JP;
Kazushi Tanaka, Tokyo, JP;
Tsuyoshi Komaki, Tokyo, JP;
Kentaro Iida, Tokyo, JP;
Hidetake Itoh, Tokyo, JP;
Naoki Hayashida, Tokyo, JP;
Kenji Yoneyama, Tokyo, JP;
Kazushi Tanaka, Tokyo, JP;
Tsuyoshi Komaki, Tokyo, JP;
Kentaro Iida, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention provides an optical recording disk, with which the worsening of jitter can be prevented effectively even when fingerprints become adhered onto a laser light incidence surface. An optical recording diskcomprises a substrate, a recording layer, formed on the substrate, a light transmitting layer, formed on the recording layer, and a hard coat layer, formed on the light transmitting layer, and is characterized in that, when an operation of adhering an artificial fingerprint solution onto the optical recording disk's light incidence surface, onto which laser light is made incident, is performed and then an operation of wiping off the artificial fingerprint solution that has been adhered onto the light incidence surface is repeated five times, jitter becomes no more than 1.15 times that prior to the adhesion of the artificial fingerprint solution.