Recording tape cartridge

• US 20050156071A1
• Filed: 01/21/2005
• Published: 07/21/2005
• Est. Priority Date: 01/21/2004
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Hiraguchi, Kazuo
• Granted Patent: US 7,320,444 B2
• Time in Patent Office: Days
• US Class Current: 242/332.400
• CPC Class Codes: G11B 23/045 Covers
• CPC Class Codes: G11B 23/107 using one reel or core, one end of the record carrier coming out of the magazine or cassette

Abstract

The present invention provides a recording tape cartridge. The recording tape cartridge includes at least a door opening and closing an opening by rotating around a supporting shaft provided at a front wall side; an allowing portion formed in the door, which allows avoidance of contact between the door and a distal end surface of a leader tape when the door closes the opening; and a guide portion formed at the allowing portion, and abutting the distal end portion of the leader tape, 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. When the door closes the opening of the recording tape cartridge, a predetermined clearance is ensured between the distal end surface of the leader tape and a deepest surface of the allowing portion.

Claims

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 a 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 pullout 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.

2. 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 a 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 clearance, which is greater than or equal to 0.5 mm, is ensured between the distal end surface of the leader tape and the deepest surface of the allowing portion.