Belt driven tape cartridge

摘要

Disclosed is a belt driven tape cartridge capable of recording data at a higher density and a higher speed than in the conventional belt driven tape cartridges. The belt driven tape cartridge includes a flexible non-magnetic support, a magnetic recording layer formed on one surface of the flexible support and having a surface roughness of 10 nm or under, and a back coat layer formed on the other surface of the flexible support and having a surface roughness being above 100 nm but under 300 nm.