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:
Aug. 10, 2010
Filed:
Mar. 29, 2006
Eiko Hibino, Yokohama, JP;
Hiroshi Miura, Yokohama, JP;
Kazunori Ito, Yokohama, JP;
Makoto Harigaya, Hiratsuka, JP;
Hiroyoshi Sekiguchi, Yokohama, JP;
Michiaki Shinotsuka, Hiratsuka, JP;
Masaru Shinkai, Yokohama, JP;
Masaki Kato, Sagamihara, JP;
Katsuyuki Yamada, Zama, JP;
Eiko Hibino, Yokohama, JP;
Hiroshi Miura, Yokohama, JP;
Kazunori Ito, Yokohama, JP;
Makoto Harigaya, Hiratsuka, JP;
Hiroyoshi Sekiguchi, Yokohama, JP;
Michiaki Shinotsuka, Hiratsuka, JP;
Masaru Shinkai, Yokohama, JP;
Masaki Kato, Sagamihara, JP;
Katsuyuki Yamada, Zama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention relates to an recording method for a multi-layered optical recording medium including M phase change recording layers, with M≧2. The method comprises recording a mark in a Kth one of said recording layers by using a laser to irradiate the Kth recording layer using a recording pulse train including a plurality of laser beam pulses. The recording pulse train for the Kth recording layer has a cycle of t[T], the 1st recording layer is the recording layer closest the laser beam, and the Mth recording layer is the recording layer furthest from the laser beam, T is a clock cycle. The following relationship is satisfied: t<t, and the cycle of recording pulse train does not decrease from one recording layer to the next recording layer in the direction in which the laser beam irradiates.