Magnetic tape and method for producing the same
A magnetic tape produced by cutting a magnetic sheet with a wide breadth into a tape having a predetermined width using a cutting device, in which the magnetic sheet has a magnetic layer containing magnetic powder and a hinder formed on one surface of a non-magnetic substrate having a thickness of 4 μm or less, and a center line average height (Ra) along a roughness curve of a cut edge of the magnetic tape is from 0.08 to 0.25 μm.
1. A magnetic tape having an entire thickness of from 2 to 8 μm 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 substrate having a thickness of 4 μm or less, 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 0.09 to 0.23 μm.
2. The magnetic tape according to claim 1 , wherein the center line average height (Ra) along a roughness curve of a cut edge of the magnetic tape in a thickness direction is from 0.09 to 0.12 μm.
3. The magnetic tape according to claim 1 , further comprising a primer layer containing inorganic powder and a binder between said non-magnetic substrate and said magnetic layer.
4. The magnetic tape according to claim 3 , wherein said binder of said primer layer contains an electron radiation curing resin.
5. The magnetic tape according to claim 1 , which is used with a linear serpentine type magnetic recording-reproducing system.
6. The magnetic tape according to claim 1 , wherein a friction coefficient between the cut edge and a flange portion is from 0.18 to 0.31.