Polyester film for imaging media

A primer coated polyester film for imaging media, which has a thickness of 40 to 200 μm and a haze of not more than 5%, and comprises a biaxially oriented polyester film support and at least one priming layer having a thickness of 0.01 to 0.2 μm, which priming layer is laminated directly on said support and oriented at least monoaxially,

• said priming layer being formed from a coating solution containing a water-soluble resin (A) having a polyvinyl alcohol unit as a main constituent and a water-soluble or water-dispersible resin (B) having at least one aromatic polyester unit, and further containing a crosslinkable compound (C) having a multifunctional crosslinkable group,
• wherein the weight ratios of (A), (B) and (C) in the coating solution satisfy the following formulas (1) and (2) at the same time:
• 1/9≦(A)/(B)≦9/1 (1),
• and
• 1/1≦{(A)+(B)}/(C)≦100/1 (2).