Magnetic tape and magnetic signal reproducing device
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Apr 28, 2016
filing date -
Apr 30, 2015
priority date (Note) -
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Abstract
The magnetic tape has a nonmagnetic layer, a magnetic layer, and a backcoat layer; with one or both of the magnetic layer and nonmagnetic layer comprising at least one type of lubricant; with the backcoat layer comprising at least one type of lubricant; with a surface lubricant index as measured on a surface of the magnetic layer ranging from 1.00 to 4.00; and
- with a state of a presence of indentations on the surface of the magnetic layer satisfying condition 1 and condition 2:condition 1: a number of indentations greater than or equal to 5 nm and less than 10 nm in depth of 5 to 1,000 per 350 μm×260 μm area; andcondition 2: a number of indentations greater than or equal to 10 nm in depth of less than or equal to 100 per 350 μm×260 μm area.
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