| abstract |
A retardation film having an optical anisotropy appropriately adjusted is manufactured. SOLUTION Contains water in a content of 2 to 20% by mass, and further contains at least one additive of a plasticizer, a deterioration inhibitor, a retardation increasing agent, an ultraviolet absorber and an aromatic compound, and is added to the surface portion. The cellulose acylate film is stretched in a state where the content of the agent is smaller than the content of the additive in the whole. [Selection figure] None |