Leader or trailer for a magnetic tape
AssigneeFuji Photo Film Co., Ltd.
InventorsMasaaki Fujiyama, Masahiro Utumi
Life of this patent
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Abstract
This invention relates to a leader or trailer for a magnetic tape, which comprises a plastic support member, a coated layer consisting essentially of a pigment and binder on the surface of the plastic support and a lubricant layer on the back side of the plastic support, the pigment consisting of a mixture of at least two solid powders each having a mean grain size of (A) 0.002 to 3 microns and (B) 5 to 35 microns and the lubricant layer being coated in a proportion of at least 0.1 mg/m.sup.2.
Claims10
A leader or trailer for a magnetic tape, the leader or trailer comprising a plastic support, a coating layer consisting essentially of an inorganic, non-magnetic pigment and binder on the surface of the plastic support and a lubricant layer on the back side of the plastic support, the inorganic, non-magnetic pigment consisting of a mixture of at least two solid powders (A) having a mean grain size of 0.002 to 3 microns and (B) having a mean grain size of 5 to 35 microns, the mixing ratio of the pigments (A)/(B) being from 9.5/0.5 to 1/9, and the lubricant layer being coated in a proportion of at least 0.1 mg/m.sup.2.
Dependencies are inferred from the claim text.