Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Reexamination Certificate
2006-10-10
2006-10-10
Nguyen, John Q. (Department: 3654)
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
C242S611000, C360S132000
Reexamination Certificate
active
07118061
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 (152v) formed between a chucking gear (152b) and an outer peripheral rib (152r2) formed at an outer peripheral side of this chucking gear (152b) are provided separately from the outer peripheral rib (152r2). And the reference plane (152v) is formed with edge planes of each of a first rib (152v1) extending toward a circumference and a second rib (152v2) extending toward a direction crossing the first rib (152v1). According to this arrangement, a volume at a portion constituting the reference plane (152v) is made smaller, occurrence of a sink after a resin is hardened is suppressed, and molding quality of the flange unit (152) is improved so that straight runnability of the magnetic tape at high speed running and reliability in recording/reproducing operation are improved.
REFERENCES:
patent: 6869037 (2005-03-01), Hiraguchi
patent: 10-97779 (1998-04-01), None
patent: 10-222950 (1998-08-01), None
Chiba Hitomi
Kikuchi Shuichi
Sakurai Mitsue
Sanpei Takaaki
Sasaki Kazuo
Frommer William S.
Frommer & Lawrence & Haug LLP
Levy Paul A.
Nguyen John Q.
Sony Corporation
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