Patent ID: 8038089

Claim:
A leader member in a recording tape cartridge, that is attached to a free end of a recording tape wound around a single reel accommodated in a case, and that is pulled out from an opening formed in the case by a pull out member of a drive device, wherein the leader member is manufactured by die casting with one of a zinc alloy, an aluminum alloy, a magnesium alloy, or a copper alloy, the leader member is a leader pin including a body on which the free end of the recording tape is wound, and a dimension of at least a portion corresponding to a parting line in an axial direction of the body is reduced such that a substantially planar portion is formed at the portion corresponding to the parting line on the body of the leader pin, the substantially planar portion including two substantially planar surfaces formed on an outer circumferential surface of the body of the leader pin such that the two substantially planar surfaces are opposed to each other.