Abstract: A tape cartridge improving an assembling property of a leader member, for leading out a tape-shaped recording medium, to which a leading edge of the tape is fixed. The tape cartridge accommodates a reel hub unit rotatably, for winding a magnetic recording medium on its periphery, and includes a leader member for holding and fixing a leading edge of the magnetic recording medium. The leader member has a pin member having a pair of collar portions between which the magnetic recording medium is positioned, and a clamp member fitted in between the collar portions from through an opening so formed in a longitudinal direction of a cylindrical body as to extend to end surfaces on both sides of the cylindrical body, and clamping the magnetic recording medium between the pin member and the clamp member itself. Chamfered portions are provided at edge portions of the opening of the clamp member.

Abstract: Snapping off and excessive protruding are prevented for parts formed by melted material. An ultrasonic vibrator 3, a horn 4 whose contact surface that contacts a front end portion of an attachment boss 22a of a recording medium case (an upper case 11a and a lower case 11b) is subjected to a matte finishing process and transmits ultrasound generated by the ultrasonic vibrator 3, and a moving mechanism 2 that moves the horn 4 in a direction toward and away from the recording medium case are included. By doing so, it is possible to prevent the melted material from flowing out in a wide range across the contact surface and the formation of deep concaves at a part formed of melted material.

Abstract: A tape cartridge improving an assembling property of a leader member, for leading out a tape-shaped recording medium, to which a leading edge of the tape is fixed. The tape cartridge accommodates a reel hub unit rotatably, for winding a magnetic recording medium on its periphery, and includes a leader member for holding and fixing a leading edge of the magnetic recording medium. The leader member has a pin member having a pair of collar portions between which the magnetic recording medium is positioned, and a clamp member fitted in between the collar portions from through an opening so formed in a longitudinal direction of a cylindrical body as to extend to end surfaces on both sides of the cylindrical body, and clamping the magnetic recording medium between the pin member and the clamp member itself. Chamfered portions are provided at edge portions of the opening of the clamp member.

Abstract: There is provided a leader tape which is capable of preventing breakage of a tape body when the tape body is pulled out, and a tape cartridge incorporating the leader tape. A leader tape includes a tape body having one end fixed to a tape, for enabling the tape to be pulled out of a cartridge body, and a pin attached to the tape body, for pulling out the tape therewith. The tape body has a portion on a side of another end opposite to the one end, the portion being folded such that the folded portion surrounds the periphery of the pin and that the folded portion has a leading end portion thereof welded to a tape surface of the tape body opposed to the folded portion. The welding is effected non-densely in at least one of a pin-side boundary portion of a welded area where the leading end portion and the tape surface opposed thereto are welded to each other and a one end-side boundary portion of the welded area.

Abstract: There is provided a leader tape which is capable of preventing breakage of a tape body when the tape body is pulled out, and a tape cartridge incorporating the leader tape. A leader tape includes a tape body having one end fixed to a tape, for enabling the tape to be pulled out of a cartridge body, and a pin attached to the tape body, for pulling out the tape therewith. The tape body has a portion on a side of another end opposite to the one end, the portion being folded such that the folded portion surrounds the periphery of the pin and that the folded portion has a leading end portion thereof welded to a tape surface of the tape body opposed to the folded portion. The welding is effected non-densely in at least one of a pin-side boundary portion of a welded area where the leading end portion and the tape surface opposed thereto are welded to each other and a one end-side boundary portion of the welded area.