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AssigneeFuji Photo Film Co., Ltd.
InventorsYuji Shirakura, Hisamasa Abe, Teruo Yamashita, Tatsuo Shimizu, Sei Kawahara, Takahito Miyoshi, Yasuo Nishikawa
Estimating the term…
A support for a photographic printing paper comprising a substrate and a waterproof resin coating layers provided on the both sides of the substrate, wherein at least the waterproof resin-coating provided on the side of the substrate on which an emulsion for forming an image is coated comprises i) a lowermost waterproof resin coating layer contacting the substrate and ii) at least one upper coating layer containing a waterproof resin capable of melt-extruded at a temperature of from 170.degree. to 290.degree. C. and containing uniformly dispersed titanium dioxide, and a method for manufacturing the support by melt extrusion.
A support for a photographic printing paper comprising a substrate and waterproof resin coating layers provided on both sides of the substrate, wherein at least the waterproof resin coating provided on the side of the substrate on which an emulsion for forming an image is to be coated comprises i) a lowermost melt-extruded waterproof resin coating layer contacting the substrate and ii) at least one melt-extruded upper coating layer containing a waterproof resin capable of being melt-extruded at a temperature of from 170.degree. to 290.degree. C. and containing uniformly dispersed titanium dioxide
The support for a photographic printing paper as in claim 12, wherein said ethylene copolymer resin is selected from the group consisting of an ionomer, an ethylene-vinyl acetate copolymer, an ethylene-methyl methacrylate copolymer, an ethylene-ethyl acrylate copolymer, an ethylene-methyl acrylate copolymer, an ethylene-acrylic acid copolymer, an ethylene-ethyl acrylate-maleic anhydride copolymer, an ethylene-methacrylic acid copolymer, and a graft-polymer of polyolefin with maleic anhydride and the metal salts thereof.
A method for manufacturing a support for a photographic material, which comprises forming a lowermost coating layer containing a waterproof resin and at least one upper coating layer containing a waterproof resin and titanium dioxide dispersed therein, by melt-extrusion coating on the side of a substrate to which an emulsion is to be coated, wherein the temperature of the extrusion of the upper layer containing titanium dioxide is from 170.degree. to 290.degree. C. and the temperature of the extrusion of the lowermost layer is from 290.degree. C. to 345.degree. C.
Dependencies are inferred from the claim text.