Patent ID: 7316314

Claim:
A tape cassette storing case, comprising: a storing case main body for storing a tape cassette, the storing case main body having a first side surface and a second side surface that is opposite to the first side surface; a recess region in the first side surface, the recess region being defined by a step from the first side surface; and a plurality of ribs on the second side surface, wherein each rib comprises a projected surface supported by inclined surfaces extending from the second side surface, wherein when two storing case main bodies including a first main body and a second main body are stacked so that the first side surface in the first main body is superposed on the second side surface in the second main body, said plurality of ribs in the second main body is regulated by the step of the recess region on the first main body, and said plurality of ribs in the second main body each has an inclined surface with respect to the second side surface in the second main body.