Magnetic tape cartridge

摘要

A magnetic tape cartridge comprises: a single reel 3 around which a magnetic tape is wound; and a cartridge case 2 for accommodating the reel 3 rotatably, the cartridge case 2 including a lower case 60, at the center of the bottom portion of which an opening 2c for driving the reel is formed for exposing the engaging means for driving the reel, the engaging means for driving the reel being formed on an outer surface of the bottom portion of a reel hub, the cartridge case also including an upper case 2a attached to an upper portion of the lower case 60. A crimped surface 62 for reducing a frictional resistance is formed on a side wall 61 of the lower case 60 which slidably comes into contact with a cartridge guide member of a recording and playback device when the magnetic tape cartridge is attached to and detached from a deck. Thereby, it is possible to provide a magnetic tape cartridge that can be smoothly attached to and detached from a deck of a recording and playback device.