20030094530-A1 is referenced by 4 patents.

In the cartridge, the opening is formed diagonally to an arrow A direction by cutting away a corner portion at a drive device loading side, and the opening faces both the arrow A direction and an arrow B direction. A leader pin and a magnetic tape are drawn out along the minimal length path from the opening. A door, which is formed in a circular arc shape in plan view, is guided (to suppress looseness) by case screw bosses, protrusion portions and a guide surface while the door rotates to turn at an outer side of a pin stand and the reel without deviating from a movement path along the form of curvature of the door, and thus the opening is opened/closed.

Title
Recording tape cartridge
Application Number
10/298900
Publication Number
20030094530
Application Date
November 19, 2002
Publication Date
May 22, 2003
Inventor
Kazuo Hiraguchi
Agent
Sughrue Mion Pllc
DC, US
Assignee
Fuji Photo Film
IPC
G11B 23/107
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