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.

Date of Patent:
May. 09, 2006

Filed:

Jun. 30, 2005
Applicants:

Makoto Miyamoto, Ome, JP;

Tsuyoshi Toda, Kodaira, JP;

Masatoshi Ohtake, Ome, JP;

Motoyasu Terao, Tokyo, JP;

Junko Ushiyama, Kodaira, JP;

Keikichi Andoo, Musashino, JP;

Yumiko Anzai, Ome, JP;

Akemi Hirotsune, Higashimurayama, JP;

Tetsuya Nishida, Tokyo, JP;

Hideki Saga, Kokubunji, JP;

Inventors:

Makoto Miyamoto, Ome, JP;

Tsuyoshi Toda, Kodaira, JP;

Masatoshi Ohtake, Ome, JP;

Motoyasu Terao, Tokyo, JP;

Junko Ushiyama, Kodaira, JP;

Keikichi Andoo, Musashino, JP;

Yumiko Anzai, Ome, JP;

Akemi Hirotsune, Higashimurayama, JP;

Tetsuya Nishida, Tokyo, JP;

Hideki Saga, Kokubunji, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); G11B 5/09 (2006.01);
U.S. Cl.
CPC ...
Abstract

Recording information is disclosed in which an information recording medium is irradiated with a recording energy beam that is power-modulated into at least a record power level and a record-ready power level lower than the record power level. The information is recorded on the recording medium in the form of length and interval of a mark portion. When forming a mark portion of a predetermined length, the radiation energy of the energy beam is increased as compared with when forming a mark portion of a different length before or after the first pulse of an energy beam pulse train including at least a pulse for forming the mark portion.


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