| http://www.w3.org/ns/prov#value | - The water-soluble binder to be employed for the back coat layer includes, for example, water-soluble polymers such as styrene/maleic acid salt copolymers, styrene/acrylic acid salt copolymers, polyvinyl alcohol, silanol-modified polyvinyl alcohol, starch, starch made to be cationic, casein, gelatin, carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl pyrrolidone and the like and water-dispe
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