MAGNETIC TAPE AND METHOD OF MANUFACTURING THE SAME

摘要

The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the magnetic layer contains a fatty acid ester, the full width at half maximum of the spacing distribution as measured by optical interferometry on the magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm, the full width at half maximum of the spacing distribution after vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm, and the difference between the spacing Safter after vacuum heating the magnetic tape and the spacing Sbefore before vacuum heating the magnetic tape, Safter−Sbefore, is greater than 0 nm but less than or equal to 8.0 nm.

主权项

1. A magnetic tape,
which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein a magnetic layer comprises a fatty acid ester; a full width at half maximum of a spacing distribution as measured by optical interferometry on a magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm; a full width at half maximum of a spacing distribution as measured by optical interferometry on a magnetic layer side surface of the magnetic tape after vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm; and a difference between a spacing Safter as measured by optical interferometry on a magnetic layer side surface of the magnetic tape after vacuum heating the magnetic tape and a spacing Sbefore as measured by optical interferometry on a magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape, Safter−Sbefore, is greater than 0 nm but less than or equal to 8.0 nm.