Color photographic silver halide light-sensitive materials

A color photographic silver halide light-sensitive material comprising a support having coated thereon a silver halide emulsion layer containing a non-diffusible alpha-acylacetoamide yellow dyeforming coupler represented by the formula (II):

• ##EQU12## wherein Y.sub.1 is an aliphatic group, an aromatic group or a heterocyclic group, Y.sub.2 is an aromatic group or a heterocyclic group, and X is a member selected from the group consisting of a fluorine atom, an acyloxy group, an aryloxy group, a heterocyclic oxy group, a cyclic acylamino group or a cyclic acylsulfonylamino group, and a hydrophilic colloid layer containing tert-octylhydroquinone.

A color photographic silver halide light-sensitive material comprising a support having coated thereon a silver halide emulsion layer containing a non-diffusible alpha-acylacetoamide yellow dye forming coupler represented by the formula (II):

• ##EQU13## wherein Y.sub.1 is an aliphatic group, an aliphatic group, an aromatic group or a heterocyclic group, Y.sub.2 is an aromatic group or a heterocyclic group, and X is a member selected from the group consisting of a fluorine atom, an acyloxy group, an aryloxy group, an heterocyclic oxy group, a cyclic acylamino group or a cyclic acylsulfonylamino group, and containing a monoalkylhydroquinone represented by the formula (I) or a compound capable of releasing said monoalkylhydroquinone by hydrolysis in aqueous alkaline solution:
• ##SPC14##
• wherein R.sub.1 is an alkyl group having at least 4 carbon atoms in said silver halide emulsion layer or a hydrophilic colloid layer.

A color photographic silver halide light-sensitive material comprising a support having coated thereon a silver halide emulsion layer containing a non-diffusible alpha-acylacetoamide yellow dye-forming coupler represented by the formula (II):

• ##EQU14## wherein Y.sub.1 is an aliphatic group, an aromatic group or a heterocyclic group, and X is a member selected from the group consisting of a fluorine atom, an acyloxy group, an aryloxy group, a heterocyclic oxy group, a cyclic acylamino group or a cyclic acylsulfonylamino group, and a hydrophilic colloid layer containing a hydroquinone of which the benzene ring is substituted with one alkyl group having 4 to 10 carbon atoms, or a compound capable of releasing said monoalkylhydroquinone by hydrolysis in aqueous alkaline solution.

A color photographic silver halide light-sensitive material comprising a support having coated thereon a silver halide emulsion layer containing 0.2 to 5.0 millimol/m.sup.2 of a non-diffusible alpha-acylacetoamide yellow dye-forming coupler represented by the formula (II):

• ##EQU15## wherein Y.sub.1 is an aliphatic group, an aromatic group or a heterocyclic group, Y.sub.2 is an aromatic group or a heterocyclic group, and X is a coupling-off group, and containing 0.002 to 0.08 part by weight of a monoalkylhydroquinone represented by the formula (I) or a compound capable of releasing said monoalkylhydroquinone by hydrolysis in aqueous alkaline solution:
• ##SPC15##
• wherein R.sub.1 is an alkyl group having at least 4 carbon atoms in said silver halide emulsion layer or a hydrophilic colloid layer per part by weight of the yellow dye-forming coupler.

A color photographic silver halide light-sensitive material containing a 2-equivalent alpha-acylacetoamide yellow dye-forming coupler of the formula (II):

• ##EQU16## wherein Y.sub.1 is an aliphatic group, an aromatic group or a heterocyclic group, Y.sub.2 is an aromatic group or a heterocyclic group and X is a member selected from the group consisting of a fluorine atom, an acyloxy group, an aryloxy group, a heterocyclic oxy group, a cyclic acylamino group or a cyclic acylsulfonylamino group, and a monoalkylhydroquinone.

A color photographic silver halide light-sensitive material containing a 2-equivalent alpha-acylacetoamide yellow dye forming coupler of the formula (II):

• ##EQU17## wherein Y.sub.1 is an aliphatic group, an aromatic group or a heterocyclic group, Y.sub.2 is an aromatic group or a heterocyclic group and X is a member selected from the group consisting of fluorine, an acyloxy group, an anyloxy group, a heterocyclicthio group, a heterocyclicoxy group, a heterocylicthio group, a cyclic diacylamino group and a cyclic acylsulfonylamino group, and a monoalkylhydroquinone represented by the formula (I) or a compound capable of releasing said monoalkylhydroquinone by hydrolysis in aqueous alkaline solution:
• ##SPC16##
• wherein R.sub.1 is an alkyl group having at least 4 carbon atoms.