Patent ID: 8349475

Claim:
A magnetic tape produced by cutting a magnetic sheet with a wide breadth into a tape with a predetermined width using a cutting device, wherein the magnetic sheet comprises a magnetic layer containing magnetic powder and a binder formed on one surface of a non-magnetic aromatic polyester substrate having a thickness of 2.2 to 3.1 μm and a ratio (Ew/Et) of a Young's modulus of the magnetic sheet in a widthwise direction (Ew) to a Young's modulus thereof in a lengthwise direction (Et) is from 0.87 to 1.05, and wherein a center line average height (Ra) along a roughness curve of a cut edge of the magnetic tape in a thickness direction is from 0.11 to 0.23 μm; and wherein the magnetic tape further comprises a primer layer containing inorganic powder and a binder between said non-magnetic substrate and said magnetic layer.