Patent ID: 6908056

Claim:
A recording tape cartridge which is loaded into a drive device for use, the recording tape cartridge comprising: a case for rotatably accommodating, at an interior of the case, a reel on which a recording tape is wound, the case having an opening for pulling-out of the recording tape from the interior of the case; and a shielding member, slidably held at the case, for closing the opening, wherein the case has a peripheral wall having an outer surface, and a projection is provided at the shielding member with the projection being exposed from the outer surface of the peripheral wall, such that, due to the cartridge moving in a predetermined direction for loading the cartridge into a drive device, the projection abuts one portion of the drive device and can be moved relative to the peripheral wall, whereby the shielding member opens the opening, wherein the projection has an end surface which, in a state in which the shielding member closes the opening, is flush with at least one portion of the outer surface of the peripheral wall, and wherein a slit, which exposes the projection from the outer surface of the peripheral wall, is formed in the peripheral wall, and the slit extends parallel to the predetermined direction for loading and permits relative movement.