Laminated film

A laminated film comprising:

• (A) an aromatic polyester film;
• and
• (B) a hydrophilic coating layer which is present on at least one side of the aromatic polyester film (A) and has a surface energy of at least 54 dyne/cm, the coating layer comprising:
• (a) 50 to 80% by weight, based on the total of components (a), (b) and (c), of a copolyester which contains a dicarboxylic acid component having a sulfonate group in an amount of 1 to 16 mol % of the total of all dicarboxylic acid components and has a secondary transition point of 20 to 90.degree. C.,
• (b) 10 to 30% by weight, based on the total of components (a), (b) and (c), of poly (alkylene oxide) homopolymer having a number average molecular weight of 600 to 2,000, and
• (c) 3 to 25% by weight, based on the total of components (a), (b) and (c), of fine particles having an average particle diameter of 20 to 80 nm;
• wherein the composition comprising:
• (a) 50% to 80% by weight, based on the total of components (a), (b) and (c), of a copolyester which contains a dicarboxylic acid component having a sulfonate group in an amount of 1 to 16 mol % of the total of all dicarboxylic acid components and has a secondary transition point of 20 to 90.degree. C.,
• (b) 10 to 30% by weight, based on the total of components (a), (b) and (c), or poly (alkylene oxide) homopolymer having a number average molecular weight of 600 to 2,000, and
• (c) 3 to 25% by weight, based on the total of components (a), (b) and (c), of fine particles having an average particle diameter of 20 to 80 nm, and produced by a process comprising admixing said components (a), (b) and (c), has a surface energy of at least 54 dyne/cm.