Silver halide color photographic photosensitive material

1. A silver halide color photographic photosensitive material having, on a support, at least one layer of a blue sensitive emulsion layer unit containing a yellow color forming coupler, a green sensitive emulsion layer unit containing a magenta color forming coupler, and a red sensitive emulsion layer unit containing a cyan color coupler,

wherein 70% or more of the total projected area of the entire silver halide grains of at least one kind of silver halide emulsion in at least one silver halide photographic emulsion layer is made of silver halide containing silver halide grains satisfying the following (a) to (c), and the photosensitive material contains at least one inter-image effect providing layer:

(a) the material comprises a tabular silver halide host grain with an aspect ratio of 5 or more having two principal surfaces parallel with each other and a protrusion portion of silver halide epitaxially joined onto the surface of the tabular silver halide host grain,

(b) the silver bromide content is 70 mole % or more both for the tabular silver halide host grain and the protrusion portion, and

(c) the ratio of the silver amount of the protrusion portion to the silver amount of the tabular silver halide host grain is 12% or less.

2. A silver halide color photographic photosensitive material having, on a support, at least one layer of a blue sensitive emulsion layer unit containing a yellow color forming coupler, a green sensitive emulsion layer unit containing a magenta color forming coupler, and a red sensitive emulsion layer unit containing a cyan color forming coupler,

wherein 70% or more of the total projected area of the entire silver halide grains of at least one kind of silver halide emulsion in at least one silver halide photographic emulsion layer is made of silver halide containing silver halide grains satisfying the following (a) to (c), and the photosensitive material contains a compound represented by the following Formula (I):

(a) the material comprises a tabular silver halide host grain with an aspect ratio of 5 or more having two principal surfaces parallel with each other and a protrusion portion of silver halide epitaxially joined on the surface of the tabular silver halide host grain,

(b) the silver bromide content is 70 mole % or more both for the tabular silver halide host grain and the protrusion portion, and

(c) the ratio of the silver amount of the protrusion portion to the silver amount of the tabular silver halide host grain is 12% or less:

in which R 11 and R 12 each independently represent a hydrogen atom, an aliphatic group or aromatic group, R 13 and R 14 each represent a hydrogen atom, or one of R 13 and R 14 represents a hydrogen atom and the other represents an alkyl group, aralkyl group, aryl group, heterocyclic group, amino group, alkylamino group, arylamino group, alkylthio group, arylthio group, alkoxy group, aryloxy group, alkyl sulfonyl group, aryl sulfonyl group or acyl group, G 11 represents a carbonyl group, sulfonyl group, sulfinyl group, phospholyl group, oxalyl group, thiocarbonyl group, or iminomethylene group, and n represents 0 or 1 provided that the compound represented by Formula (I) has either a molecular weight of 300 per >N-N< or more and 20,000 or less, or n=1 in Formula (I).

3. A silver halide color photographic material according to claim 1 wherein the silver halide color photographic photosensitive material contains a compound represented by the following Formula (I):

in which R 11 and R 12 each independently represent a hydrogen atom, an aliphatic group or aromatic group, R 13 and R 14 each represent a hydrogen atom, or one of R 13 and R 14 represents a hydrogen atom and the other represents an alkyl group, aralkyl group, aryl group, heterocyclic group, amino group, alkylamino group, arylamino group, alkylthio group, arylthio group, alkoxy group, aryloxy group, alkyl sulfonyl group, aryl sulfonyl group or acyl group, G 11 represents a carbonyl group, sulfonyl group, sulfinyl group, phospholyl group, oxalyl group, thiocarbonyl group, or iminomethylene group, and n represents 0 or 1, provided that the compound represented by Formula (I) has either a molecular weight of 300 per >N-N< or more and 20,000 or less, or n=1 in Formula (I).

4. A silver halide color photographic photosensitive material according to claim 1 , wherein the silver halide color photographic photosensitive material is a silver halide color photographic photosensitive material used for forming a positive image by black and white development after imagewise exposure, followed by subjecting a residual silver halide to color forming development.

5. A silver halide color photographic photosensitive material according to claim 4 , wherein the silver iodide content in the silver halide in the inter-image effect providing layer is 1 mole % or more.

6. A silver halide color photographic photosensitive material according to claim 5 , wherein the silver halide in the inter-image effect providing layer has a spectral sensitivity to at least one wavelength region in red, green, and blue regions.

7. A silver halide color photographic photosensitive material according to claim 2 , wherein the silver halide color photographic photosensitive material is a silver halide color photographic photosensitive material used for forming a positive image by black and white development after imagewise exposure, followed by subjecting a residual silver halide to color forming development.

8. A silver halide color photographic photosensitive material according to claim 7 , wherein the silver iodide content in the silver halide in the inter-image effect providing layer is 1 mole % or more.

9. A silver halide color photographic photosensitive material according to claim 8 , wherein the silver halide in the inter-image effect providing layer has a spectral sensitivity to at least one wavelength region in red, green, and blue regions.

10. A silver halide color photographic photosensitive material according to claim 3 , wherein the silver halide color photographic photosensitive material is a silver halide color photographic photosensitive material used for forming a positive image by black and white development after imagewise exposure, followed by subjecting a residual silver halide to color forming development.

11. A silver halide color photographic photosensitive material according to claim 10 , wherein the silver iodide content in the silver halide in the inter-image effect providing layer is 1 mole % or more.

12. A silver halide color photographic photosensitive material according to claim 11 , wherein the silver halide in the inter-image effect providing layer has a spectral sensitivity to at least one wavelength region in red, green, and blue regions.

13. A silver halide color photographic photosensitive material according to claim 2 , wherein the compound represented by Formula (I) is represented by the following Formula (II):

in which R 21 , R 22 , and G 21 are identical, respectively, with those described for R 11 , R 14 , and G 11 in Formula (I), and R 23 and R 24 each represent a hydrogen atom or one of R 23 and R 24 represents a hydrogen atom and the other represents an alkylsufonyl group, an arylsufonyl group, or an acyl group.

14. A silver halide color photographic photosensitive material according to claim 3 , wherein the compound represented by Formula (I) is represented by the following Formula (II):

in which R 21 , R 22 , and G 21 are identical, respectively, with those described for R 11 , R 14 , and G 11 in Formula (I), and R 23 and R 24 each represent a hydrogen atom or one of R 23 and R 24 represents a hydrogen atom and the other represents an alkylsufonyl group, an arylsufonyl group, or an acyl group.

15. A silver halide color photographic photosensitive material according to claim 2 , wherein the compound represented by Formula (I) is contained in a layer adjacent to the silver halide emulsion layer and/or in an intermediate layer between two silver halide emulsion layers.

16. A silver halide color photographic photosensitive material according to claim 3 , wherein the compound represented by Formula (I) is contained in a layer adjacent to the silver halide emulsion layer and/or in an intermediate layer between two silver halide emulsion layers.

17. A silver halide color photographic photosensitive material according to claim 1 , wherein the inter-image effect providing layer is a layer which forms no image.

18. A silver halide color photographic photosensitive material according to claim 2 , wherein the inter-image effect providing layer is a layer which forms no image.

19. A silver halide color photographic photosensitive material according to claim 1 , wherein the silver halide iodide content in the silver halide in the inter-image effect providing layer is 1 mole % or more.

20. A silver halide color photographic photosensitive material according to claim 2 , wherein the silver iodide content in the silver halide in the inter-image effect providing layer is 1 mole % or more.

21. A silver halide color photographic photosensitive material according to claim 1 , wherein the silver halide in the inter-image effect providing layer has a spectral sensitivity to at least one wavelength region in red, green, and blue regions.

22. A silver halide color photographic photosensitive material according to claim 2 , wherein the silver halide in the inter-image effect providing layer has a spectral sensitivity to at least one wavelength region in red, green, and blue regions.