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:
Sep. 09, 2008
Filed:
May. 11, 2000
Katsuyuki Yamada, Shizuoka, JP;
Yuki Nakamura, Kanagawa, JP;
Tatsuo Mikami, Kanagawa, JP;
Eiji Noda, Kanagawa, JP;
Kayo Katoh, Shizuoka, JP;
Katsuyuki Yamada, Shizuoka, JP;
Yuki Nakamura, Kanagawa, JP;
Tatsuo Mikami, Kanagawa, JP;
Eiji Noda, Kanagawa, JP;
Kayo Katoh, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A phase-change optical recording medium is disclosed including a supporting substrate and the following contiguous layers formed on the supporting substrate in the order recited such as a first dielectric layer, a recording layer, a second dielectric layer, a metal/alloy layer, and an ultraviolet light curing resinous layer. The recording layer is characterized by its uppermost recrystallization linear velocity ranging from about 5.0 m/sec to about 10.0 m/sec, which can be utilized in read/write/erase operations for the recording medium at linear velocities higher than the quad-speed as well.