Abstract: An optical film of high planarity that even in the use of an optical film material containing a non-resinous additive in an amount of 5 mass % or more, would exhibit inexpensive satisfactory roll cleaning effects, and that would find application in, especially, various functional films such as a retardation film and a protective film for polarization plate for use in a liquid crystal display apparatus, etc.; and a process for producing the optical film. There is disclosed a process for producing an optical film according to a melting casting film forming method, including extruding a melt of resin blend containing a resin and 5 mass % or more of non-resinous additive through a casting die into a film form, wherein a first roller (5) for cooling has a temperature of the melting point of the additive to the glass transition temperature (Tg) of the resin blend.

Abstract: An optical film producing method, comprises steps of: extruding a melted material including a melted cellulose ester resin from a casting die by using an extruding device; forming a film by pressing the extruded melted material between a first rotating member and a second rotating member; and winding up the formed film, wherein the following formulas are satisfied: 30° C.?T1?T2?60° C., 0° C.?T2?T3?20° C., Tg<T3, where T1 is the temperature of the melted material at an exit of the casting die, T2 is the temperature of the film at a point where the film firstly contacts the first rotating member, T3 is the temperature of the film at a point where the film is pressed between the first rotating member and the second rotating member, and Tg is the glass transition temperature of the film.

Abstract: An optical film of high planarity that even in the use of an optical film material containing a non-resinous additive in an amount of 5 mass % or more, would exhibit inexpensive satisfactory roll cleaning effects, and that would find application in, especially, various functional films such as a retardation film and a protective film for polarization plate for use in a liquid crystal display apparatus, etc.; and a process for producing the optical film. There is disclosed a process for producing an optical film according to a melting casting film forming method, including extruding a melt of resin blend containing a resin and 5 mass % or more of non-resinous additive through a casting die into a film form, wherein a first roller (5) for cooling has a temperature of the melting point of the additive to the glass transition temperature (Tg) of the resin blend.

Abstract: Disclosed is a method for producing an optical film having a satisfactory roll-cleaning effect at low cost. Also disclosed is an optical film which can be produced by the method and is less likely to be stained. The method comprises the steps of: pressing a film between a first revolution body and a second revolution body, conveying the film with a third revolution body, and stretching the film, wherein the film is a film-like cellulose resin, the temperature of the cellulose resin during being pressed between the first and second revolution bookies is higher than the melting temperature of an additive, and the line pressure to be employed for the pressing between the first and second revolution bodies is 0.1 to 100 N/mm.

Abstract: An optical film producing method, comprises steps of: extruding a melted material including a melted cellulose ester resin from a casting die by using an extruding device; forming a film by pressing the extruded melted material between a first rotating member and a second rotating member; and winding up the formed film, wherein the following formulas are satisfied: 30° C.?T1?T2?60° C., 0° C.?T2?T3?20° C., Tg<T3, where T1 is the temperature of the melted material at an exit of the casting die, T2 is the temperature of the film at a point where the film firstly contacts the first rotating member, T3 is the temperature of the film at a point where the film is pressed between the first rotating member and the second rotating member, and Tg is the glass transition temperature of the film.

Abstract: A silver halide emulsion is disclosed, comprising tabular silver halide grains having an average iodide content of 3 to 15 mol % and comprising silver halide phases differing in halide composition, at least 50% of the total projected area of the tabular silver halide grains being accounted for by grains having an aspect ratio of not less than 12, wherein the first silver halide phase (A) has an average iodide content of not more than 3 mol % and accounting for 50 to 85% of total silver, the second phase (B) locating outside the phase (A), having an average iodide content of 8 to 25 mol % and accounting for 10 to 35% of total silver, and the third outermost phase having an average iodide content of not more than 4 mol % 0.5 to 15% of total silver.

Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having on one side of the support at least two red-sensitive layers, at least two green-sensitive layers, at least two blue-sensitive layer and a light-insensitive layer, wherein at least one of the green-sensitive layers contains a green-sensitive silver halide emulsion exhibiting a sensitivity maximum at a wavelength of 525 to 540 nm and a sensitivity maximum at a wavelength of 550 to 565 nm.

Abstract: A silver halide emulsion is disclosed, comprising tabular silver halide grains having an average iodide content of 3 to 15 mol % and comprising silver halide phases differing in halide composition, at least 50% of the total projected area of the tabular silver halide grains being accounted for by grains having an aspect ratio of not less than 12, wherein the first silver halide phase (A) has an average iodide content of not more than 3 mol % and accounting for 50 to 85% of total silver, the second phase (B) locating outside the phase (A), having an average iodide content of 8 to 25 mol % and accounting for 10 to 35% of total silver, and the third outermost phase having an average iodide content of not more than 4 mol % 0.5 to 15% of total silver.

Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having on one side of the support at least two red-sensitive layers, at least two green-sensitive layers, at least two blue-sensitive layer and a light-insensitive layer, wherein at least one of the green-sensitive layers contains a green-sensitive silver halide emulsion exhibiting a sensitivity maximum at a wavelength of 525 to 540 nm and a sensitivity maximum at a wavelength of 550 to 565 nm.

Abstract: A light-sensitive silver halide photographic emulsion is disclosed, wherein at least 70% of the total projected area of silver halide grains are tabular grains having an average aspect ratio of a diameter to a thickness of 2 or more, an average value of the longest distances between two or more parallel twin planes contained in the respective tabular grains is 0.008 .mu.m or more, and a variation coefficient of the longest distances between parallel twin planes is 35% or less, and wherein the silver halide emulsion is spectrally sensitized with a substantially slightly water-soluble sensitizing dye by adding the dye to the emulsion in the form of a dispersion of solid particles dispersed in an aqueous solution substantially free from an organic solvent or surfactant.

Abstract: A silver halide photographic emulsion is provided, containing a monomethine-cyanine dye, a trimethine-cyanine dye and a supersensitizer represented by the following Formula [I] or Formula [II]. The cyanine dyes are incorporated in the form of a dispersion of solid particles.

Abstract: A silver halide photographic emulsion comprising a substantially water-insoluble, spectral sensitizing dye and a styryl compound represented by the following formula, wherein the sensitizing dye is dispersed in an aqueous solution substantially free from an organic solvent and the thus-dispersed dye is introduced into the silver halide emulsion.

Abstract: A light-sensitive silver halide color photographic material is disclosed. The color photographic material is stored in roll, and has a value of ##EQU1## being 20 to 60 .mu.m, wherein at least one silver halide emulsion layer contains a silver halide emulsion containing silver chrolide in a proportion of not less than 10 mol %. The photographic material is excellent in resistant to pressure desensitizing and preventive from producing scratching trouble. A photographic unit containing the photographic material is also disclosed.

Abstract: There is disclosed a silver halide light-sensitive color photographic material having a high sensitivity and excellent granularity. The photographic material contains in at least one of the emulsion layers the core/shell type tabular silver halide grains comprising:a. a numerical ratio of monodispersed grains to all grains of 70% or more;b. an average aspect value of not less than 1 and less than 5; andc. a portion having a silver iodide content of 15.3 mol % or more in the core.