Silver halide color photographic light-sensitive material

Details Silver halide color photographic light-sensitive material Silver halide color photographic light-sensitive material

1998-06-02

2001-04-24

Le, Hoa Van (Department: 1752)

Foundation garments

For lower torso including thighs, e.g., corset, girdles

With stiffening strips or stays

C430S548000, C430S549000, C430S557000, C430S558000

Reexamination Certificate

active

06220925

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a silver halide color photographic light-sensitive material excellent in color reproducibility. More particularly, the present invention relates to a silver halide color photographic light-sensitive material containing both a pyrrolotriazole coupler and a non-color forming colorless cyclic imide having a diffusion-resistant group.
BACKGROUND OF THE INVENTION
When a silver halide color photographic light-sensitive material is exposed and subjected to color development, a coupler is reacted with an oxidation product of an aromatic primary amine developing agent to form a color image. In such a photographic system, color reproduction is performed by a subtractive color process and in order to reproduce blue, green and red colors, yellow, magenta and cyan color images which are in a complementary relation, respectively, are formed. Among them, in order to form a cyan color image, a phenolic or naphtholic coupler is generally employed. However, a dye formed from such a coupler has a undesirable absorption in a green light region. Thus, the coupler causes a serious problem in that color reproducibility of the photographic material is remarkably deteriorated and it has been desired to solve such a problem.
In order to solve the problem, heterocyclic compounds are proposed to use as couplers as described, for example, in U.S. Pat. Nos. 4,728,598 and 4,873,183 and European Patent 249453A2. However, these couplers have another serious problem in that the coupling activity thereof is poor. Pyrroloazoles are proposed in European Patent 491197A1 to solve these problems. Although these compounds are superior to conventional couplers in view of the coupling activity and hue, further improvement has been desired.
On the other hand, methods of using additives to solve the above-described problems have been investigated in addition to the studies on structures of couplers per se. For instance, there are a technique for controlling hue by adding amide compounds or phenols as described in U.S. Pat. No. 5,474,880, a technique for increasing color forming property by adding hydrogen-providing compounds having a hydrogen bond as described in JP-A-7-270990 (the term “JP-A” as used herein means an “unexamined published Japanese patent application”), and techniques for improving color reproducibility and color forming property by adding ureas and specific carboxylic acids as described in JP-A-6-258802 and JP-A-6-3782, respectively. However, the above-described problems have not yet been solved sufficiently according to these techniques. Therefore, investigations on the structure of pyrroloazole coupler, the incorporation of additive and a suitable combination thereof have still been made.
Particularly, a further technical development is necessary to sufficiently enjoy the characteristic of excellent hue of dyes formed from these couplers in photographic light-sensitive materials.
SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a silver halide color photographic light-sensitive material having improved color reproducibility and color forming property.
Another object of the present invention is to provide a silver halide color photographic light-sensitive material which has improved fastness and prevents from the formation of stain and fog.
Other objects of the present invention will become apparent from the following description and examples.
The present inventors have analyzed in greater detail the mechanism of color-forming reaction of a pyrrolotriazole coupler in a silver halide color photographic light-sensitive material in order to solve the above-described problems. As a result, it has been found that the degradation of color reproducibility and color forming property is caused by the formation of an undesirable colored substance during the color-forming reaction process. For the purpose of inhibiting the formation of colored substance, the inventors have made various investigations on structure of pyrrolotriazole couplers and additives which are employed together with the couplers and completed the present invention.
The above-described objects of the present invention are accomplished by a silver halide color photographic light-sensitive material comprising a support having provided thereon at least one hydrophilic colloid layer, wherein the silver halide color photographic light-sensitive material contains a coupler represented by the formula (1) shown below and a non-color forming colorless cyclic imide compound having a diffusion-resistant group:
wherein R
1
and R
2
each represents an alkyl group or an aryl group; R
3
, R
4
and R
5
each represents a hydrogen atom, an alkyl group or an aryl group; Z represents a non-metallic atomic group necessary to form a saturated ring; R
6
represents a substituent; X represents a heterocyclic group, a substituted amino group or an aryl group; and Y represents a hydrogen atom or a group capable of being released upon color development.
DETAILED DESCRIPTION OF THE INVENTION
Now, the coupler represented by the formula (1) which can be used in the present invention will be described in more detail below.
In the formula (1), the alkyl group represented by R
1
, R
2
, R
3
, R
4
or R
5
is a straight chain, branched chain or cyclic alkyl group having from 1 to 36 carbon atoms, preferably a straight chain, branched chain or cyclic alkyl group having from 1 to 22 carbon atoms, and more preferably a straight chain or branched chain alkyl group having from 1 to 8 carbon atoms. Specific examples of the alkyl group include a methyl, ethyl, n-propyl, isopropyl, tert-butyl, tert-amyl, tert-octyl, decyl, dodecyl, cetyl, stearyl, cyclohexyl or 2-ethylhexyl group.
The aryl group represented by R
1
, R
2
, R
3
, R
4
or R
5
in the formula (1) is an aryl group having from 6 to 20 carbon atoms, preferably an aryl group having from 6 to 14 carbon atoms, and more preferably an aryl group having from 6 to 10 carbon atoms. Specific examples of the aryl group include a phenyl, 1-naphthyl, 2-naphthyl or 2-phenanthryl group.
The non-metallic atomic group necessary to form a saturated ring represented by Z in the formula (1) is a non-metallic atomic group necessary to form a 5-membered to 8-membered saturated ring which may be substituted. A non-metallic atom for forming the ring include a carbon atom, an oxygen atom, a nitrogen atom and a sulfur atom. The ring is preferably a 6-membered saturated carbon ring, and more preferably a cyclohexane ring substituted with an alkyl group having from 1 to 24 carbon atoms on the 4-position thereof.
The substituent represented by R
6
in the formula (1) include, for example, a halogen atom (e.g., fluorine, chlorine, or bromine), an aliphatic group (preferably a straight chain or branched chain alkyl group having form 1 to 36 carbon atoms, an aralkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group or a cycloalkenyl group, specifically, e.g., methyl, ethyl, propyl, isopropyl, tert-butyl, tridecyl, tert-amyl, tert-octyl, 2-methanesulfonyl-ethyl, 3-(3-pentadecylphenoxy)propyl, 3-{4-{2-[4-(4-hydroxyphenylsulfonyl)phenoxy]dodecanamido}phenyl}propyl, 2-ethoxytridecyl, trifluoromethyl, cyclopentyl, or 3-(2,4-di-tert-amylphenoxy)propyl), an aryl group (preferably having from 6 to 36 carbon atoms, specifically, e.g., phenyl, 4-tert-butylphenyl, 2,4-di-tert-amylphenyl, 4-tetradecanamidophenyl, or 2-methoxyphenyl), a heterocyclic group (preferably having from 1 to 36 carbon atoms, specifically, e.g., 2-furyl, 2-thienyl, 2-pyrimidinyl, or 2-benzothiazolyl), a cyano group, a hydroxy group, a nitro group, a carboxy group, an amino group, an alkoxy group (preferably a straight chain, branched chain or cyclic alkoxy group having from 1 to 36 carbon atoms, specifically, e.g., methoxy, ethoxy, butoxy, 2-methoxyethoxy, 2-dodecyloxyethoxy, or 2-methanesulfonylethoxy), an aryloxy group (preferably having from 6 to 36 carbon atoms, specifically, e.g., phenoxy, 2-methylphenoxy, 4-tert-butylphenoxy, 3-nitrophenoxy, 3-tert-buty

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