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Magnetic recording medium in which certain physical properties of the magnetic layer and the backcoat layer are specified

机译:规定了磁性层和背涂层的某些物理性质的磁记录介质

摘要

A magnetic recording medium comprising a nonmagnetic support having formed thereon a magnetic layer containing a ferromagnetic fine powder, a binder, and carbon black and formed on the opposite side of the nonmagnetic support to the magnetic layer-carrying side a backing layer containing a binder and carbon black, wherein (i) the Young's modulus of the magnetic layer is from 600 to 1100 kg/mm.sup.2 and the Young's modulus of the backing layer is from 200 to 400 kg/mm.sup.2, or (ii) the surface free energy of the backing layer is at least 1 dyn/cm higher than the surface free energy of the magnetic layer, the gloss of the magnetic layer is at least 150, and the gloss of the backing layer is from 2 to 7.
机译:包括非磁性载体的磁记录介质,其上形成有包含铁磁细粉,粘合剂和炭黑的磁性层,并且在非磁性载体的与磁性层承载侧相对的一侧上形成了包含粘合剂的背衬层和炭黑,其中(i)磁性层的杨氏模量为600至1100 kg / mm 2,背衬层的杨氏模量为200至400 kg / mm 2。 )背衬层的表面自由能比磁性层的表面自由能高至少1达因/厘米,磁性层的光泽度至少为150,并且背衬层的光泽度为2至7 。

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