| 摘要 |
PROBLEM TO BE SOLVED: To provide a film capable of highly satisfying winding characteristics, running properties and electromagnetic conversion characteristics when used, for example, as a magnetic recording medium, excellent in slip properties at the time of the production of the film and the magnetic recording medium, excellent from an aspect preventing the generation of drop out and extremely reduced in the generation of a scratch or abrassion powder with good productivity in low cost. SOLUTION: In a biaxially oriented laminated film wherein a polyester A layer is provided on at least the single surface of a polyester B layer, the polyester A layer contains 0.1-1.0 wt.% of particles (a) with an average particle size d1 of 0.1-0.7μm and 0.001-0.5 wt.% of inorg. particles (b) with an average particle size d2 of 0.4-1.2μm and Mohs hardness of 4.5 or less and the average particle sizes d1, d2 satisfy formula: d1×1.3<d2<d1×2.0.
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