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:
May. 12, 2009
Filed:
Dec. 21, 2005
Makoto Nagao, Odawara, JP;
Minoru Araki, Odawara, JP;
Satoshi Wakamatsu, Odawara, JP;
Kenji Ichikawa, Odawara, JP;
Makoto Nagao, Odawara, JP;
Minoru Araki, Odawara, JP;
Satoshi Wakamatsu, Odawara, JP;
Kenji Ichikawa, Odawara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
The present invention provides a master disk for magnetic transfer which has a disk-like outer shape and in the surface of which a large number of fine magnetic layer patterns are formed, wherein the relationship between the outside diameter size d (mm) of the extreme outer circumference of the magnetic layer pattern and the master disk thickness t (mm) is given by 2.04×10×d+0.006≦t≦8.15×10×d+0.024, in order to exclude the effects of bows, strains and thickness deviations of a master disk in performing magnetic transfer and ensure that accurate transfer of magnetization patterns can be performed.