摘要 |
A leader tape comprising a support and a coating layer containing powder and a binder, wherein at least one surface of the leader tape has a center line average surface roughness (Ra) of from 10 to 60 nm, and depression hardness (DH) defined by the following equation (1) of from 60 to 140 kg/mm<SUP>2 </SUP>(0.588 to 1.372 GPa): <?in-line-formulae description="In-line Formulae" end="lead"?>DH=3.7926x10<SUP>-2</SUP>[Pmax/(Hmax)<SUP>2</SUP>](kg/mm<SUP>2</SUP>) (1)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein Pmax is a maximum load and Hmax is a maximum displacement amount of an indenter.
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