Classifications

• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/39212—Carbocyclic
  • G03C7/39216—Carbocyclic with OH groups
• • G—PHYSICS
  • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
  • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
  • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/3003—Materials characterised by the use of combinations of photographic compounds known as such, or by a particular location in the photographic element

Definitions

• This invention relates to a light-sensitive silver halide photographic material, more particularly to a light-­sensitive silver halide color photographic material having little color turbidity and excellent color reproducibility.
• a light-sensitive silver halide color photographic material has three kinds of silver halide emulsion layers for photography spectrally sensitized selectively so as to have light sensitivity to blue light, green light and red light provided by coating on a support.
• a red-­sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer are generally provided by coating, and further an intermediate layer or a protective layer, including UV-ray absorbing layer, etc. are provided.
• the reaction rate between the diffusion-resistant coupler contained in each light-sensitive silver halide emulsion layer with a color developing agent oxidized product is generally different between the respective emulsion layers. For this reason, the excessive oxidized product of the color developing agent generated in an emulsion layer containing a diffusion-resistant coupler with small reaction rate with the oxidized product of the color developing agent will be diffused to other silver halide emulsion layers than the layer of itself, whereby there are the drawbacks that color turbidity is liable to occur and that color reproducibility will be readily lowered.
• the light-sensitive silver halide color photographic material is subjected to running by an automatic developing machine provided in each laboratory, and as a part of improvement of service for users, it has been demanded to perform development processing and return the processed product to users within the very day when the development is ordered. Recently, it has been even demanded to return the product within several hours from the order, and thus development of a light-sensitive silver halide color photographic material capable of rapid processing has been increa­singly hastened.
• the present invention has been accomplished in view of the state of the art as described above and an object of the present invention is to provide a light-sensitive silver halide color photographic material having little color turbidity and excellent color reproducibility.
• a light-sensitive silver halide photographic material comprising at least two light-­sensitive silver halide emulsion layers containing diffusion-resistant couplers and at least one non-­light-sensitive intermediate layer sandwiched between said light-sensitive silver halide emulsion layers provided on a support, wherein said non-light-sensitive intermediate layer contains a compound which deactivates the oxidized product of a color developing agent, the relative color formation speed ratio k1/k2 (lower color formation speed is defined as k1, and higher color formation speed as k2; when the color formation speeds are equal, either one may be applicable) between the diffusion-resistant couplers contained in the respective two light-sensitive silver halide emulsion layers adjacent to said non-light-sensitive intermediate layer is 0.25 ⁇ k1/k2 ⁇ 1, and the relationship of said k1/k2 to the ability Sc is represented by Formula (I): Sc ⁇ k1/k2 ⁇ 0.2 Formula (I
• the relative color formation speed ratio k1/k2 between the diffusion-resistant couplers in the present invention is determined as described below on the basis of the principle which is basically similar to the above method.
• a coupler is dispersed by use of 0.5 g of dioctyl phthalate per 1 mmol of the coupler, and in the dispersion were mixed a coupler solution A (coupler concentration 2 x 10 ⁇ 2 mol, silver chloride concentration 4 x 10 ⁇ 3 mol) added with a silver chloride emulsion (AgCl 100 %, average particle size 0.14 ⁇ m) and a color developer B (N-ethyl-N- ⁇ -methanesulfonamidoethyl-3-­methyl-4-aminoaniline sulfate 2 x 10 ⁇ 2 mol, anhydrous potassium carbonate 40 g/liter, sodium sulfite 1 g/liter, pH 10.0) at 25 °C at a volume ratio of 1 : 1 (coupler solution A : color developer B).
• coupler solution A coupler concentration 2 x 10 ⁇ 2 mol, silver chloride concentration 4 x 10 ⁇ 3 mol
• a color developer B N-e
• the ratio of the absorbances obtained is determined as k1/k2. In this case, the smaller absorbance is made k1 and the larger one k2. When absorbances are equal, either one may be made k1 or k2.
• the ability Sc of the compound to deactivate the oxidized product of the color developing agent in the non-­light-sensitive intermediate layer in the present invention is determined based on the method described above and according to the method as described below.
• a dispersion is prepared by use of 0.5 g of dioctyl phthalate per 1 mmol of the compound which deactivates the oxidized product of the color developing agent, and the same measurement is performed under the same conditions as in determination of (ABS) R except for adding the dispersion into the above coupler solution A (concentration of the compound which deactivates the oxidized product of the color developing agent : 2 x 10 ⁇ 3 mol), and the absorbance obtained is made (ABS) S . Sc is given by the following formula (II).
• Cs represents moles (mmol units) of the compound which deactivates the oxidized product of the color developing agent contained per 1 m2 of the non-­light-sensitive intermediate layer.
• the present invention is defined by the above k1/k2 and Sc, and is not limited only by the chemical structures of the coupler and the compound which deactivates the oxidized product of the color developing agent employed.
• the above k1/k2 is required to be 0.25 or more and 1 or less, preferably 0.30 or more and 1 or less.
• the product of Sc represented by the above formula (I) and k1/k2 is required to be 0.2 or more, preferably 0.3 or more.
• a light-sensitive silver halide color photographic material of the present invention which contains a hydroquinone type compound as the compound which deactivates the oxidized product of the color developing agent in the non-light-sensitive intermediate layer, and a yellow coupler in one of the two light-sensitive silver halide emulsion layers adjacent to said non-light-­sensitive intermediate layer and a magenta coupler in the other of the emulsion layers.
• the non-light-sensitive intermediate layer of the present invention is required to have the ability Sc to deactivate the oxidized product of the color developing agent which satisfies the relationship of the above formula (I). Sc can be controlled as desired according to the kind and the amount added of the compound which deactivates the oxidized product of the color developing agent.
• hydroquinone deriva­tives aminophenol derivatives, gallic acid derivatives, ascorbic acid derivatives, etc. as mentioned above, preferably hydroquinone derivatives.
• hydroquinone type compounds which deactivate the oxidized product of the color developing agent preferably used in the present invention are represented by the formula (HQ) shown below.
• R1 represents a substituted or unsub­stituted alkyl group
• n represents an integer of 1 to 3.
• the total sum of carbon numbers of R1 is 8 or more, and when n is 2 or more, the plural number of R1 may be either the same or different.
• R2 represents a halogen atom, hydroxyl group, sulfo group, carboxyl group.
• m represents an integer of 0 to 3, and when m is 2 or more, the plural number of R2 may be either the same or different.
• the sum of n + m is 4 or less.
• the alkyl group represented by R1 may be preferably a straight and branched alkyl group having 1 to 20 carbon atoms, including, for example, methyl, ethyl, propyl, t-butyl, octyl, t-dodecyl groups and the like.
• the substituent possessed by R1 may include sulfo group, carboxyl group, cyano group, hydroxyl group, halogen atoms (e.g. fluorine, chlorine, bromine atoms, etc.), -COOR4, -COR5, -OR6, -SO2R7, -NHSO2R8, etc.
• R4, R5, R6, R7 and R8 represent alkyl group, alkenyl group, cycloalkyl group, aryl group.
• alkyl group represented by R4 through R8 may be the same as the alkyl represented by the above R1, examples of cycloalkyl group may be cyclopentyl, cyclohexyl groups, etc., and as the alkenyl group one having 2 to 18 carbon atoms is preferred, such as allyl, octenyl, octadecenyl groups, etc., and the aryl groups may be phenyl, naphthyl groups, etc. Also, R4, R5, R6, R7 and R8 may further have substituents.
• R2 in the formula (HQ) represents a halogen atom (e.g. fluorine, chlorine, bromine atoms, etc.), hydroxyl group, sulfo group, carboxyl group, preferably sulfo group and carboxyl group.
• halogen atom e.g. fluorine, chlorine, bromine atoms, etc.
• n may be preferably 1 or 2, and m preferably 0 or 1.
• the compounds which deactivate the oxidized product of the color developing agent to be used in the present invention may include in addition to the above compounds, for example, those as described in U.S. Patents 2,360,290, 2,336,327, 2,418,613, 2,673,314, 2,701,197, 2,704,713, 2,728,659, 2,732,300, 2,735,765, Japanese Unexamined Patent Publications. Nos. 92988/1975, 92989/1975, 93928/1975, 110337/1975, 146235/1977, Japanese Patent Publication No. 23813/1975, Japanese Unexamined Patent Publications Nos. 24141/1983, 5247/1984, 81639/1987, etc. and further Japanese Unexamined Patent Publication No. 39851/1987, page 5 right lower col. to page 7 right low col, and Japanese Unexamined Patent Application No. 93538/1986, page 19 to page 29, and they can be synthesized easily according to the methods as described in the above patents.
• the compound which deactivates the oxidized product of the color developing agent to be used in the present invention can be used either singly or in combination of two or more kinds. Sc in this case is determined as the sum of Sc's for the respective compounds.
• the hydroquinone type compound it is also possible to add a quinone type compound which is the oxidized product of said hydroquinone type compound in combination.
• the compound which deactivates the oxidized product of the color developing agent according to the present invention may be contained in the non-light-sensitive intermediate layer of the present invention preferably in an amount of 2 x 10 ⁇ 4 to 1 x 10 ⁇ 2 mol per 1 m2, more preferably 3 x 10 ⁇ 4 to 5 x 10 ⁇ 3 mol.
• the compound which deactivates the oxidized product of the color developing agent to be used in the present invention in a photographic constituting layer, it can be also added in the state as such in the coating solution for forming the layer or in a solution dissolved at an appropriate concentration in a solvent which does not deleteriously affect the light-sensitive material such as water, alcohol, etc., but there can be also preferably employed a method in which it is dissolved in a high boiling organic solvent and/or a low boiling organic solvent, followed by emulsification into an aqueous solution before addition.
• the yellow coupler preferably used in the present invention is represented by the following formula (Y).
• R Y1 represents a halogen atom.
• R Y2 represents a hydrogen atom or a group substitutable on the benzene ring, and B represents a ballast group.
• Z represents a hydrogen atom, a halogen atom or a group eliminable through the reaction with the oxidized product of the color developing agent.
• the halogen atom represented by R Y1 may be preferably chlorine atom, and R Y2 may be preferably a hydrogen atom.
• ballast group represented by B may include acylamino, alkoxycarbonyl, aryloxycarbonyl, alkylsulfamoyl, arylsulfamoyl, alkyl­sulfonamide, arylsulfonamide, alkylureido, arylureido, succinimido, alkoxy, aryloxy, alkoxycarbonylamino, alkylcarbamoyl, arylcarbamoyl, alkylsulfamoylamino, arylsulfamoylamino, alkyl, alkenyl, acyloxy, etc., particularly preferably a group having total carbon atoms of 8 to 30.
• Z may be preferably a halogen atom or an eliminable group through the reaction with the oxidized product of the color developing agent.
• the halogen atom chlorine atom is preferable
• the eliminable group through the reaction with the oxidized product of the color developing agent may be preferably a group represented by (wherein R Z1 represents a group of non-metal atoms necessary for forming a nitrogen-containing heterocyclic ring, and the ring formed with said R Z1 may have also substituents) or -OR Z2 (wherein R Z2 represents a substituted or unsubstituted alkyl group, aryl group or heterocyclic group).
• a yellow coupler containing at least one functional group A shown below in at least one of the groups represented by B and Z in the above formula (Y) is most preferably used.
• R1 - R4, R6, R7 and R10 each represent an alkyl group or an aryl group
• R5, R8, R9 and R11 each represent hydrogen atom, an alkyl group or an aryl group.
• the alkyl group represented by R1 to R11 may be preferably a straight or branched alkyl group having 1 to 20 carbon atoms
• the aryl group represented by R1 to R11 may be preferably phenyl group
• the alkyl group and the aryl group represented by R1 to R11 include those having substituents.
• the functional group A is contained in at least one of the groups represented by B and Z, but particularly preferably in the group represented by B.
• the yellow coupler to be used in the present invention also include, in addition to the above compounds, the yellow couplers as described in Japanese Unexamined Patent Publications Nos. 155538/1982, 6652/1986, 70841/1980, 24321/1972, 66834/1973, Japanese Patent Publication No. 19031/1971, Japanese Unexamined Patent Publications Nos. 87650/1975, 123342/1975, U.S. Patent 3,408,194, etc. and further Japanese Unexamined Patent Publication No. 72239/1986, page 5 left lower col. to page 8 left upper col., Japanese Patent Applications Nos. 231525/1986, page 22 to page 40, 243865/1986, page 20 to page 38, and also synthesized according to the methods described in these.
• magenta coupler known 5-pyrazolone type couplers, pyrazoloazole type couplers, etc. can be preferably used. More preferably, they are couplers represented by the following formulae (M-I) to (M-III).
• Ar represents an aryl group
• R P1 hydrogen atom or a substituent
• R P2 represents a substituent
• Y represents hydrogen atom or a group eliminable through the reaction with the oxidized product of the color developing agent
• W represents -NH-, -NHCO- (N atom is bonded to the carbon atom of the pyrazolone nucleus) or -NHCONH-
• m is an integer of 1 or 2.
• X M represents hydrogen atom or a group eliminable through the reaction with the oxidized product of the color developing agent
• each of R M1 , R M2 and R M3 represents hydrogen atom or a substituent.
• the aryl group represented by Ar may be preferably phenyl group, more preferably a phenyl group having at least one halogen atom, alkyl group, alkoxy group, alkoxycarbonyl group, acylamino group or cyano group as the substituent.
• the substituent represented by R P1 may be preferably a halogen atom or an alkoxy group, more preferably chlorine atom.
• the substituent represented by R P2 is not particularly limited, but at least one of R P2 is a ballast group. As the ballast group represented by R P2 , known ballast groups in this field of art may be included. W may be preferably -NH-.
• the group eliminable through the reaction with the oxidized product of the color developing agent represented by Y may include preferably aryloxy, alkoxy, heterocyclicoxy, silyloxy, phosphoneoxy, alkylthio, arylthio, heterocyclicthio, acylthio, thiocyano, aminothiocarbonylthio, acylamino, sulfonamide, alkoxycarbonylamino, aryloxycarbonylamino or nitrogen-­containing heterocyclic group bonded through nitrogen atom at the active site of the pyrazolone ring, etc.
• R M1 , R M2 and R M3 are not particularly limited, but representative of them may be alkyl, aryl, anilino, acylamino, sulfonamide, alkylthio, arylthio, alkenyl, cycloalkyl, etc., and otherwise there may be also included halogen atoms and cycloalkenyl, alkynyl, heterocyclic ring, sulfonyl, sulfinyl, phosphonyl, acyl, carbamoyl, sulfamoyl, cyano, alkoxy, aryloxy, hetero­cyclicoxy, siloxy, acyloxy, carbamoyloxy, amino, alkylamino, imide, ureido, sulfamoylamino, alkoxy­carbonylamino, aryloxycarbonyla
• R M1 on the above heterocyclic ring is one represented by the formula (M-IV) shown below. wherein R M4 , R M5 and R M6 have the same meanings of the above R M1 , R M2 and R M3 .
• R M4 two of the above R M4 , R M5 and R M6 , for example, R M4 are R M5 may be bonded to form a saturated or unsaturated ring (e.g. cycloalkane, cycloalkene, heterocyclic ring), and further R M6 may be bonded to said ring to constitute a bridged hydrocarbon compound residue.
• R M4 saturated or unsaturated ring
• R M6 may be bonded to said ring to constitute a bridged hydrocarbon compound residue.
• R M4 to R M6 are alkyl groups and the case (ii) wherein one of R M4 to R M6 , for example, R M6 is hydrogen atom, and the other two R M4 and R M5 are bonded together to form a cycloalkyl together with the root carbon atom.
• (i) is the case wherein two of R M4 - R M6 are alkyl groups, and the other one is hydrogen atom or an alkyl group, and most preferred is the case wherein all of R M4 - R M6 are alkyl groups.
• Examples of the group eliminable through the reaction with the oxidized product of the color developing agent represented by X M in the formulae (M-II) and (M-III) may include halogen atoms (chlorine atom, bromine atom, fluorine atom, etc.) and alkoxy, aryloxy, heterocyc­licoxy, acyloxy, sulfonyloxy, alkoxycarbonyloxy, aryloxy­carbonyl, alkyloxalyloxy, alkoxyoxalyloxy, alkylthio, arylthio, heterocyclicthio, alkyloxythiocarbonylthio, acylamino, sulfonamide, nitrogen-containing heterocyclic ring bonded through N atom, alkyloxycarbonylamino, aryloxycarbonylamino, carboxyl groups, etc., preferably halogen atoms, particularly chlorine atom.
• magenta coupler may also form a polymer dimer or higher through Y, Ar, R P1 or R P2 in the above formula (M-I), and through X M , R M1 , R M2 or R M3 in the above formulae (M-II) and (M-III).
• magenta coupler to be used in the present invention is not limited.
• the magenta couplers to be used in the present invention may include, in addition to the above compounds, those as disclosed in U.S. Patent 3,684,514, U.K. Patent 1,183,515, Japanese Patent Publications Nos. 6031/1965, 6035/1965, 15754/1969, 40757/1970, 19032/1971, Japanese Unexamined Patent Publications Nos. 13041/1975, 129035/1978, 37646/1976, 62454/1980, U.S. Patent 3,725,067, U.K. Patents 1,252,418, 1,334,515, Japanese Unexamined Patent Publications Nos. 171956/1984, 162548/1984, 43659/1985, 33552/1985, 39852/1987, Research Disclosure No.
• the light-sensitive silver halide photographic material can be applied to, for example, color nega- and posi-film, as well as for color printing paper, etc., but above all the effect of the present invention can be exhibited when applied to a color printing paper to be provided for direct viewing.
• the light-sensitive silver halide photographic material including the color printing paper is a light-sensitive silver halide photographic material for multi-color use, and for effecting color reproduction by the color subtractive method, has generally a structure comprising silver halide emulsion layers containing the respective couplers of magenta, yellow and cyan as the couplers for photography laminated in a suitable number of layers and order of layers on a support, and said layer number and layer order may be suitably changed depending on the important performance, and purpose of use.
• couplers of the above formula (Y) are preferred, and as the magenta coupler, couplers represented by the above formulae (M-I) to (M-III) are preferably used.
• cyan coupler phenol type compounds, naphthol type compounds, etc. can be used.
• hydrophobic compounds such as couplers, compounds which deactivate the oxidized product of the color developing agent, etc.
• hydrophobic compounds such as couplers, compounds which deactivate the oxidized product of the color developing agent, etc.
• various methods such as the solid dispersion method, the latex dispersion method, the oil-in-water type emulsification and dispersion method, etc.
• the oil-in-water type emulsification and dispersion method may be carried out by dissolving a hydrophobic compound such as couplers, etc.
• a hydrophilic binder such as an aqueous gelatin solution by use of a surfactant, and then adding the emulsion into the desired hydrophilic colloid layer.
• silver halide to be used in the present invention there may be included any desired silver halide such as silver chloride, silver bromide, silver iodide, silver chlorobromide, silver iodobromide, silver chloroiodide, etc.
• silver halide grains containing 90 mol% or more of silver chloride are preferred, and the silver bromide content may be preferably 10 mol% or less and the silver iodide content preferably 0.5 mol% or less. More preferably, silver chlorobromide having a silver bromide content of 0.1 - 2 mol% may be employed.
• the silver halide grains may be used either alone or as the mixture with other silver halide grains having a different composition. Also, they can be used as the mixture with silver halide grains having a silver chloride content of 10 mol% or less.
• the ratio of the silver halide grains having a silver chloride content of 90 mol% in the total silver halide grains contained in said emulsion layer may be 60 % by weight or more, preferably 80 % by weight or more.
• the composition of the silver halide grain may be uniform from the inner portion to the outer portion of the grain, but may be also different in the inner portion and the outer portion of the grain. When the compositions in the inner portion and the outer portion of the grain are different, the composition may be varied continuously or incontinuously.
• the grain size of the silver halide grain is not particularly limited, but preferably within the range of 0.2 to 1.6 ⁇ m, more preferably 0.25 to 1.2 ⁇ m when other photographic performances such as rapid processability and sensitivity, etc. are taken into consideration.
• the above grain size can be measured according to various methods generally employed in the related field of art. Representative methods are described in Rabland "Grain Size Analytical Method" (A.S.T.M. Symposium on Light Microscopy, 1955, pp. 94 - 122) or "Theory of Photographic Process” (Mieth and James, co-authors, third edition, McMillan Co., 1966, Chapter 2).
• the grain size can be measured by use of the projected area or an approximate value of diameter of grain.
• the grain size distribution can be represented considerably accurately as diameter or projected area.
• the distribution of the grain sizes of silver halide grains may be either poly-dispersed or mono-dispersed.
• mono-dispersed silver halide grains having its fluctuation coefficient of 0.22 or less, more preferably 0.15 or less in the grain size distribution of silver halide grains may be employed.
• the fluctuation coefficient is a coefficient indicating the breadth of the grain size distribution, which is defined by the following formula.
• ri represents grain size of individual grain
• ni represents its number.
• the grain size as mentioned here refers to its diameter in the case of a spherical silver halide grain, while it represents the diameter when the projected image is calculated to a circular image of the same area in the case of grain of cubic body or a shape other than sphere.
• the silver halide grains to be used in the emulsion may be obtained according to any of the acidic method, the neutral method and the ammonia method. Said grains may be grown either at one time or may be grown after preparation of seed grains. The method for making seed grains and the method for growing the grains may be either the same or different.
• the mode for reacting a soluble silver salt with a soluble halogen salt there may be employed either of the normal mixing method, the reverse mixing method, the simultaneous mixing method or combinations thereof, but preferably one obtained by the simultaneous mixing method is preferred. Further, as one mode of the simultaneous mixing method, it is also possible to use the PAg-­controled double jet method as described in Japanese Unexamined Patent Publication No. 48521/1979.
• a silver halide solvent such as thioether, etc. may be also employed.
• compounds such as mercapto-containing compounds, nitrogen-­containing heterocyclic compounds or sensitizing dyes may be also added during formation of silver halide grains or after completion of grain formation.
• the shape of silver halide grains may be any desired one. A preferable example is cubic body having ⁇ 100 ⁇ plane as the crystal surface.
• grains having octahedral, tetradeca­hedral, dodecahedral bodies, etc. may be made according to the methods as described in U.S. Patents 4,183,756, 4,225,666, Japanese Unexamined Patent Publication No. 26589/1980, Japanese Patent Publication No. 42737/1980, The Journal of Photographic Science (J. Photgr. Sci.), 21 , 39 (1973), etc. and these can be also used. Further, grains having twin crystal surface may be also used.
• silver halide grains either grains comprising a single shape or a mixture of grains with various shapes may be employed.
• the silver halide grains to be used in the emulsion can contain metal ions by use of cadmium salt, zinc salt, lead salt, thallium salt, iridium salt or complex thereof, rhodium salt or complex thereof, iron salt or complex thereof internally of the grains and/or on the surface of the grains by adding them in the process of forming the grains and/or in the process of growing them, and also by placing them in an appropriate reducing atmosphere, reducing sensitizing nuclei can be imparted internally of the grains and/or the surface of the grains.
• the emulsion containing the silver halide grains may have unnecessary soluble salts removed therefrom after completion of the growth of the silver halide grains, or may also contain them as such. When said salts are to be removed, it can be practiced on the basis of the method described in Research Disclosure No. 17643.
• the silver halide grains to be used in the emulsion may be either the grains in which latent images are formed primarily on the surfaces or alternatively the grains in which latent images are formed primarily internally of the grains. Preferably, grains in which latent images are formed primarily on the surfaces may be employed.
• the emulsion to be used in the present invention is chemically sensitized according to conventional methods. That is, there may be employed the sulfur sensitization method by use of a compound containing sulfur which can react with silver ions or active gelatin, the selenium sensitizing method by use of a selenium compound, the reducing sensitizing method by use of a reducing substance, the noble metal sensitizing method by use of gold or other noble metal compounds either singly or as a combination.
• the silver halide emulsion can be optically sensitized to a desired wavelength region by use of a dye known as sensitizing dye in the field of photography.
• the light-sensitive silver halide photographic material of the present invention there can be used as desired color antifoggant, film hardener, plasticizer, polymer latex, UV-ray absorber, formalin scavenger, mordant, developing accelerator, developing retarder, fluorescent brighener, matting agent, lubricant, antistatic agent, surfactant, etc.
• the light-sensitive silver halide photographic material can form an image by performing various color developing processes.
• the light-sensitive silver halide color photographic material of the present invention by making the above k1/k2 0.25 or more and 1 or less and also satisfying the relationship of the above formula [I] between said k1/k2 and said Sc, can improve remarkably the effect of preventing color turbidity, and improve color reprodu­cibility to great extent.
• the layers 1 - 7 shown below were successively provided by coating (simultaneous coating) on a paper support coated on the both surfaces with polyethylene to prepare light-sensitive silver halide color photographic materials 1 - 33 (in the following examples, the amount added is shown in an amount per 1 m2 of the light-­sensitive material).
• the blue light absorption density D'B at the unexposed portion, the blue light absorption density DB at the exposed portion, the green light absorption density D'G at the unexposed portion and the green light absorption density DG at the exposed portion were determined by a densitometer (Sakura Densitometer PDA-60, produced by Konishiroku Photo Industry).
• the ratio (Q) of the blue light absorption density to the green light absorption density excluding the fog density was determined.
• the samples No. 11 to N. 33 of the present invention having k1/k2 and Sc k1/k2 within the ranges specified in the present invention have remarkably small Q1 and Q2 as compared with comparative samples, whereby it can be appreciated that color turbidity is effectively prevented and color reproduci­bility is improved.
• Light-sensitive silver halide color photographic material samples No. 34 to 66 were prepared in entirely the same manner as in Example 1 except for replacing the blue-sensitive silver halide emulsion in Layer 1 of the light-sensitive silver halide color photographic material prepared in Example 1 with Em-4 shown in Table 1, the green-sensitive silver halide emulsion in Layer 3 with Em-5 in Table 1, and the red-sensitive silver halide emulsion in Layer 5 with Em-6 in Table 1, respectively and using the yellow coupler, magenta coupler and the compound which deactivates the oxidized product of the color developing agent in Layer 1, Layer 3 and Layer 2, respectively.

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