| abstract |
(57) [Summary] [Structure] The main component of the base film is ethylene-2,6-naphthalate, and magnesium element, A photographic polyester film containing an elemental phosphorus, having a partial melting temperature of 80 to 170 ° C., and having an easy-adhesion layer provided on at least one surface. [Effect] Since the kind of the element contained in the polyester is specified, and the content ratio and content of the element and the partial melting temperature are set in the specified ranges and the easy-adhesion layer is provided, transparency, handleability, It has excellent heat resistance, dimensional stability, transportability, adhesion to photographic materials and magnetic media, little curling curl, and excellent image clarity. |