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:
Oct. 10, 2006
Filed:
Oct. 31, 2002
Takaaki Sanpei, Miyagi, JP;
Shuichi Kikuchi, Miyagi, JP;
Kazuo Sasaki, Miyagi, JP;
Mitsue Sakurai, Miyagi, JP;
Hitomi Chiba, Miyagi, JP;
Takaaki Sanpei, Miyagi, JP;
Shuichi Kikuchi, Miyagi, JP;
Kazuo Sasaki, Miyagi, JP;
Mitsue Sakurai, Miyagi, JP;
Hitomi Chiba, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A tape reel in which molding quality of a flange unit is improved so as to improve reliability at the time when a magnetic tape runs at high speed, and a tape cartridge having the same. A plurality of reference planes () formed between a chucking gear () and an outer peripheral rib () formed at an outer peripheral side of this chucking gear () are provided separately from the outer peripheral rib (). And the reference plane () is formed with edge planes of each of a first rib () extending toward a circumference and a second rib () extending toward a direction crossing the first rib (). According to this arrangement, a volume at a portion constituting the reference plane () is made smaller, occurrence of a sink after a resin is hardened is suppressed, and molding quality of the flange unit () is improved so that straight runnability of the magnetic tape at high speed running and reliability in recording/reproducing operation are improved.