| 摘要 |
PURPOSE:To reduce warpage and skew of a medium by specifying the amounts of polyfunctional acrylate compd. having >5 functional groups and urethane acrylate compd. which are incorporated into a resin protective layer. CONSTITUTION:The resin protective layer 5 contains polyfunctional acrylate compd. having >=5 functional groups by >=60wt.%, and preferably >=75wt.%, and more preferably >=85wt.%. The amt. of urethane acrylate compd. contained in the layer 5 is <=10wt.%, and preferably 2 - 8wt.%. By this method, the crosslink density of the layer is increased to enhance stress so that the stress of the layer 5 balances well with that of laminated film 6. Thus, the obtd. medium has flexibility, so that skew and warpage can be suppressed. |
