Patent ID: 6955318

Claim:
A tape cassette which is attached to a tape printing device having a printing section and used therein, comprising a body for storing a tape unit including a rolled print tape, wherein: said tape cassette detachably stores said tape unit having a first identification part for identifying a width of said rolled print tape and a second identification part for identifying a type of said rolled print tape, said tape cassette includes a tape width detection member which detects said first identification part, said first identification part and said tape width detection member being formed such that only tape units that include said rolled print tape having a preset tape width will be allowed to be stored in said tape cassette, said first identification part is configured to prevent said tape unit from being stored in said tape cassette if said tape unit accommodates said rolled print tape whose width does not correspond to the preset tape width that is usable in the tape cassette, and said second identification part is detected by a tape type detection member of the tape printing device and thereby the type of said rolled print tape of said tape unit is detected.