Plate making film, plate making ink, plate making method using the film, and plate making system using the film

A plate making method, the method comprising;

• a) drawing an image on a surface layer of a plate making film, the plate making film including said surface layer and a transparent substrate, said surface layer comprising a polymeric compound that includes recurring monomeric units of the general formula;
• [-AXAR1-]
• wherein
• A is;
• (—CH2CH2O—)
• and
• such that the mode of addition of A produces a polymer of the general formula;
• wherein x, y and z each denote an integer of 1 or more and x, y and z have a weight ratio calculated from 44(x+z)/72y that ranges from 80/20 to 94/6,
• X is a residue of ethylene glycol, and
• R1 is a dicarboxylic acid compound residue, or a diisocyanate compound residue,
• b) bringing the drawn plate making film into intimate contact with a photosensitive member;
• c) exposing the photosensitive member through the plate making film;
• d) stripping the plate making film from the photosensitive member;
• and
• e) developing the photosensitive member.