Patent ID: 7126791

Claim:
A recording medium cartridge comprising: a noncontact-type memory having an IC section for storing information and performing signal processing, and an antenna section for performing data transmission by transmitting and receiving signals, data being read from and written to said noncontact-type memory in a noncontact manner; and an accommodation portion formed by a tape movement prevention rib, wherein said accommodation portion comprises at least one projection extending from said tape movement prevention rib, wherein said tape movement prevention rib and said at least one projection are configured to retain said noncontact-type memory, wherein said tape movement prevention rib is disposed between said noncontact-type memory and a recording medium in said recording medium cartridge, wherein said tape movement prevention rib is formed discrete from side wall portions of said recording medium cartridge, and wherein said tape movement prevention rib is formed at a front side where a tape loading device enters in a central area of the recording medium cartridge.