Patent ID: 7104489

Claim:
A recording tape cartridge comprising: a case having a substantially boxed shape and rotatably accommodating a reel around which a recording tape is wound; a recessed portion formed on an upper surface of the case; and a stacking rib protrudingly provided on a lower, surface of the case, for engaging with a recessed portion of an identical recording tape cartridge positioned below the recording tape cartridge, when the recording tape cartridge and the recording tape cartridge positioned below the recording tape cartridge are stacked, wherein a protruding portion, which defines a label region, is formed at a position in the recessed portion of the recording tape cartridge, which position does not interfere with a stacking rib of an identical recording tape cartridge positioned above the recording tape cartridge, when the recording tape cartridge and the recording tape cartridge positioned above the recording tape cartridge are stacked, wherein the protruding portion of the recording tape cartridge extends in a substantially perpendicular direction from a bottom surface of the recessed portion of the recording tape cartridge, and has a substantially frame shape in a plane view, and the protruding portion of the recording tape cartridge substantially surrounds the label region on which a label is adhered.