Abstract: A polyolefin resin composition containing 5 to 150 ppm of an antioxidant and a high-concentration (e.g. 40 to 80% by weight) titanium dioxide pigment is diluted with a polyolefin resin to prepare a medium-concentration (e.g. 20 to 60% by weight) titanium dioxide pigment-containing photographic master batch, then this master batch is further diluted with a polyolefin resin to form a low-concentration (e.g. 5 to 20% by weight) titanium dioxide pigment-containing resin composition, and this resin composition is melt extruded and coated on a support made of paper or a synthetic paper to produce photographic resin coated paper. According to this process, both die lip staining and formation of microgrits are prevented.

Abstract: In preparing a polyolefin resin coated paper for photographic use which comprises melt-extruding and coating a polyolefin resin composition containing titanium dioxide onto at least one surface of a paper sheet or a synthetic paper base, a polyolefin resin composition comprising polyolefin resin and titanium dioxide surface-treated with 0.2 to 1.2 wt % (calculated as Al.sub.2 O.sub.3) of hydrous aluminum oxide based on titanium dioxide is employed as the polyolefin resin composition. By the use of such a polyolefin resin composition, problems on operation and quality due to generation of die lip stains could be solved without causing any quality problem such as photodeterioration, or the like.

Abstract: The present invention relates to a photographic material containing at least one kind of silver halogenide developer in at least one stratum of photograph-constructing layer provided on a support prepared by coating a paper base material with a film-formable resin wherein said paper base material for support is treated with at least one member selected from the group consisting of aminomethanesulfonic acid and its salts. When it is used, the discoloration in said photographic material can be prevented.

Abstract: In a photographic material, comprising a photographic constitution layer or layers containing a silver halide developer on a support obtained by coating base paper with a film-forming resin, the use of the base paper treated with a sulfinic acid or a salt thereof prevents the discoloration of the photographic material by the influence of the silver halide developer.

Abstract: In preparing a polyolefin resin-coated paper for photographic use which comprises melt-extruding and coating a polyolefin resin composition containing titanium dioxide onto at least one surface of a paper sheet or a synthetic paper base, a composition having physical property value n (as defined in the specification) of not greater than 5 when measured at 200.degree. C. and a shearing rate of 1000/sec is employed as the polyolefin resin composition. Thus, problems in preparation and quality due to generation of die lip stains can be solved.