Method for forming color image and silver halide color photosensitive material used for the same

1. A method for forming color images comprising subjecting a silver halide color photosensitive material to a development processing in the presence of a compound (A) defined below, wherein the silver halide color photosensitive material having a blue-sensitive unit, a green-sensitive unit and a red-sensitive unit, each of which comprises at least one silver halide emulsion layer, and at least one non-light-sensitive layer on a support,

compound (A): a heterocyclic compound having a hetero ring containing only one or two hetero atoms in its whole ring system, the heterocyclic compound being capable of increasing speed of the silver halide color photosensitive material by the presence thereof in comparison to the case where the heterocyclic compound is absent.

2. The method for forming color images according to claim 1 , wherein the compound (A) is contained in a developing solution.

3. The method for forming color images according to claim 1 , wherein the compound (A) is represented by general formula (I):

wherein Z 1 represents a group forming a hetero ring having one or two hetero atoms including the nitrogen atom in the formula, X 1 represents a sulfur atom, an oxygen atom, a nitrogen atom (N(Va)), or a carbon atom (C(Vb)(Vc)), wherein Va, Vb and Vc each represent a hydrogen atom or a substituent, X 2 has the same meaning as X 1 , n 1 is 0, 1, 2 or 3, provided that when n 1 is 2 or larger a plurality of X 2 's may be the same or different, X 3 represents a sulfur atom, an oxygen atom or a nitrogen atom, provided that the bond between X 2 and X 3 is a single bond or a double bond, and that X 3 may further have a substituent or have a charge according to the type of the bond.

4. The method for forming color images according to claim 1 , wherein the compound (A) is represented by general formula (11):

wherein Z 1 a represents a group to form a hetero ring containing one or two hetero atoms, L 1 a represents a substituent, m 1 a represents an integer of not less than 1 but not more than a maximum substitutable number to the hetero ring, provided that when m 1 a is 2 or more, a plurality of L 1 a's may be the same or different and the plurality of L 1 a's may bond together to form a ring, and that the compound represented by the formula (11) has at least one dissociative group.

5. The method for forming color images according to claim 1 , wherein the compound (A) is represented by general formula (12):

wherein Z 2 b represents a group to form a hetero ring containing one or two hetero atoms including the nitrogen atom in the formula, L 21 b and L 22 b each represent a hydrogen atom or a substituent, m 2 b represents an integer of not less than 0 but not more than a maximum substitutable number to the hetero ring, provided that when m 2 b is 2 or more, a plurality of L 21 b's may be the same or different and they may bond together to form a ring, and that the compound represented by the formula (12) has at least one dissociative group at L 21 b or L 22 b.

6. The method for forming color images according to claim 1 , wherein the compound (A) is represented by general formula (13):

wherein Z 2 a represents a group to form a hetero ring containing one or two hetero atoms including the nitrogen atom and Y 2 a in the formula, Y 2 a represents a carbon atom, nitrogen atom or sulfur atom, L 21 a and L 22 a each represent a hydrogen atom or a substituent, m 2 a represents an integer of not less than 0 but not more than a maximum substitutable number to the hetero ring, provided that when m 2 a is 2 or more, a plurality of L 21 a's may be the same or different and they may bond together to form a ring, and that at least one of L 21 a and L 22 a has a dissociative group.

7. The method for forming color images according to claim 1 , wherein the compound (A) is represented by general formula (21):

wherein Z 1 c represents a group to form a hetero ring containing one or two hetero atoms, L 1 c represents a hydrogen atom or substituent, m 1 c represent an integer of not less than 0 but not more than a maximum substitutable number to the hetero ring, provided that when m 1 c is 2 or more, a plurality of L 1 c's may be the same or different, and that they may bond together to form a ring, X 1 c represents S-Va 1 , O-Vb 1 or N(Vc 1 )(Vd 1 ), wherein Va 1 , Vb 1 , Vc 1 , and Vd 1 each represent a hydrogen atom or substituent, provided that when Va 1 , Vb 1 , Vc 1 , or Vd 1 represents a hydrogen atom, this hydrogen atom may dissociate to make X 1 c charge negatively, V 11 c represents a linking group, V 12 C represents a substituent, and M 1 c represents a sulfur atom or oxygen atom.

8. A silver halide color photosensitive material having a blue-sensitive unit, a green-sensitive unit and a red-sensitive unit, each of which comprises at least one silver halide emulsion layer, and at least one non-light-sensitive layer on a support, wherein at least one layer in the silver halide color photosensitive material contains a compound (A) defined below,

compound (A): a heterocyclic compound having a hetero ring containing only one or two hetero atoms in its whole ring system, the heterocyclic compound being capable of increasing speed of the silver halide color photosensitive material by the presence thereof in the silver halide color photosensitive material in comparison to the case where the heterocyclic compound is absent.