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:
Apr. 29, 2008
Filed:
Feb. 23, 2006
Takashi Niwa, Chiba, JP;
Kenji Kato, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Susumu Ichihara, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Takashi Niwa, Chiba, JP;
Kenji Kato, Chiba, JP;
Yasuyuki Mitsuoka, Chiba, JP;
Manabu Oumi, Chiba, JP;
Nobuyuki Kasama, Chiba, JP;
Susumu Ichihara, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Yoko Shinohara, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A near-field optical head has a main surface confronting a recording medium during use of the near-field optical head. A sharpened tip is disposed on the main surface and has an optical aperture at a front end thereof. An opaque film covers the sharpened tip and has a plastically deformed portion in the vicinity of the optical aperture. The front end of the sharpened tip projects from the plastically deformed portion of the opaque film. At least one stopper is disposed in the vicinity of the sharpened tip and has a height substantially equal to a height of the sharpened tip. At least one air-bearing surface is disposed on the main surface.