| 摘要 |
PURPOSE:To obtain a biaxially oriented laminated film that is hardly flawed in a high-speed process and little deteriorated in image quality at the time of dubbing by specifying a primary particle diameter of a cohesive particle and a thickness of a layer containing this and specifying a monodisperse particle and a thickness of a layer containing this. CONSTITUTION:In a biaxially oriented laminated film at least composed of a layer B containing monodisperse particles of 0.01-3mum particle diameter and a layer A containing cohesive particles of 5-100nm primary particle diameter, the primary particle diameter (d) of the cohesive particle and the thickness (t) of the layer A are so specified as to meet 0.1d<=t<=50d, and the particle diameter d1 of the monodisperse particle and the thickness t1 of the layer B containing the monodisperse particles are so specified as to meet 0.1d1<=t1<=10d1. The cohesive particle is selected out of zirconia, delta-alumina, and others. The monodisperse particle is selected out of calcium carbonate, silica, and others. |
