US 7,320,444 B2
Recording tape cartridge
Kazuo Hiraguchi, Kanagawa (Japan)
Assigned to FUJIFILM Corporation, Tokyo (Japan)
Filed on Jan. 21, 2005, as Appl. No. 11/38,175.
Claims priority of application No. 2004-012819 (JP), filed on Jan. 21, 2004.
Prior Publication US 2005/0156071 A1, Jul. 21, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. G11B 23/107 (2006.01)
U.S. Cl. 242—348.2  [360/132] 2 Claims
OG exemplary drawing
 
1. A recording tape cartridge comprising:
a case rotatably accommodating a single reel on which a recording tape is wound;
a leader tape attached to an end portion of the recording tape, and disposed along a side wall of the case;
an opening for pulling-out of the leader tape, the opening being formed at a corner portion of the case, which corner portion extends over respective portions of a front wall and the side wall of the case;
a door, whose most thin-walled portion has a thickness of 0.6 mm or greater, and which opens and closes the opening by rotating around a supporting shaft provided at a front wall side;
an allowing portion formed in the door so that a deepest surface thereof is formed in a circular-arc shape as seen in plan sectional view, the allowing portion allowing avoidance of contact between the door and a distal end surface of the leader tape when the door closes the opening; and
a guide portion formed at the allowing portion, and abutting a distal end portion of the leader tape, which is further forward than a hole portion engaged by a pull-out member of a drive device, and formed to be thick-walled in a direction of making the distal end portion of the leader tape move away from the side wall,
wherein, when the door closes the opening, a predetermined clearance is ensured between the distal end surface of the leader tape and the deepest surface of the allowing portion.