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:
Jun. 28, 2005
Filed:
Dec. 12, 2002
Masakazu Nishikawa, Kanagawa-ken, JP;
Kazuhiro Niitsuma, Kanagawa-ken, JP;
Tadashi Yasunaga, Kanagawa-ken, JP;
Toshihiro Usa, Kanagawa-ken, JP;
Kazunori Komatsu, Kanagawa-ken, JP;
Masakazu Nishikawa, Kanagawa-ken, JP;
Kazuhiro Niitsuma, Kanagawa-ken, JP;
Tadashi Yasunaga, Kanagawa-ken, JP;
Toshihiro Usa, Kanagawa-ken, JP;
Kazunori Komatsu, Kanagawa-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Abstract
A master information carrier for magnetic transfer includes a base sheet which is formed of a magnetic material. The master information carrier is provided with an irregularity pattern representing information to be transferred to a magnetic recording medium and a magnetic layer formed along the irregularity pattern. The saturation magnetization Mm of the magnetic layer and the saturation magnetization Ms of the base sheet satisfy the condition1.0<<100.