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. 03, 2008
Filed:
May. 04, 2006
Tomohiro Okada, Hitachi, JP;
Tetsuya Okai, Odawara, JP;
Shinobu Sasaki, Odawara, JP;
Tadayuki Iwakura, Odawara, JP;
Naoki Koyama, Nakano-ku, JP;
Takashi Kawabe, Hitachi, JP;
Harunobu Saito, Chigasaki, JP;
Makoto Morijiri, Naka-gun, JP;
Tomohiro Okada, Hitachi, JP;
Tetsuya Okai, Odawara, JP;
Shinobu Sasaki, Odawara, JP;
Tadayuki Iwakura, Odawara, JP;
Naoki Koyama, Nakano-ku, JP;
Takashi Kawabe, Hitachi, JP;
Harunobu Saito, Chigasaki, JP;
Makoto Morijiri, Naka-gun, JP;
Hitachi Global Storage Technologies Japan, Ltd., Odawara-shi, JP;
Abstract
Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/inor more by mounting a magnetic recording/reproducing head including such a magnetic recording head.