a photographic photosensitive element containing copolymers comprising 30 to 70 mole % of the recurring unit represented by the formula ## str1 ## wherein r 1 is a hydrogen atom or a methyl group ; and 70 to 30 mole % of the recurring unit represented by the formula ## str2 ## wherein r 2 is a hydrogen atom or a methyl group and m is selected from the group consisting of hydrogen , lithium , sodium , potassium and nh 4 ; in the most upper layer of the element , suitable for processing at temperatures of at least about 27 ° c . to form an image .