Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Reexamination Certificate
2002-02-04
2003-09-09
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
Reexamination Certificate
active
06617099
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2001-027472, filed Feb. 2, 2001, the entire contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a silver halide color photographic lightsensitive material having superior desilverizing property and a color image forming method thereof.
2. Description of the Related Art
A silver halide color reversal photographic lightsensitive material forms an image by the first development being black and white development and a successive color development, and then desilverized by carrying out bleach-fixing, but there is a case that desilverization is bad (a phenomenon in which a metal silver remains in a film) depending on the composition of the bleach liquid or the fluctuation of the liquid composition of pre-bleach which is set for acceleration of the bleach. In a color reversal photographic lightsensitive material, since almost all of silver halide which was coated is developed at the first development to be a metal silver in the white portion of a color image, it is apt to cause the inferiority of desilverization at the white portion, and since it is accompanied with the contamination of the white portion, commodity value is greatly damaged.
A pre-bleach processing is included for acceleration of bleach in an E-6 process which is a standard processing of color reversal film, and thioglycerol is added in a pre-bleach processing solution, but there has been a problem that the thioglycerol decreases in the running condition of the processing solution and a metal silver is apt to remain in accordance with it. It is required as the quality of a color reversal film that it does not depend on the compositional fluctuation of the processing solution and does not provoke the inferiority of desilverization.
As a method of reducing the residual of a metal silver after processing in a color reversal film, there is a method of preliminarily adding a desilverization accelerating agent in any of hydrophilic colloid layers in a lightsensitive material. However, since the desilverization accelerating agent having an effect has usually a mercapto group, it has been difficult to adopt it because of imparting bad influences (the deterioration of the preservation of a lightsensitive material, the decrease of sensitivity and the like) to silver halide in a lightsensitive material.
To the contrary, there are some methods of storing a desilverization accelerating agent in a condition of a precursor in a lightsensitive material and discharging it at processing to obtain an effect. For example, a method of using a desilverization accelerating agent discharging hydroquinone is disclosed in Jpn. Pat. Appln. KOKAI Publication No. (hereinafter referred to as JP-A-) 2-93454. Further, the use of a desilverization accelerating agent discharging reduced compound is disclosed in JP-A-1-26852, and further, a method of using a reducing agent in combination with said reduced compound is also disclosed.
However, even if the desilverization accelerating agent is stored in a lightsensitive material in a condition of a precursor, the desilverization accelerating agent is discharged at the first development in the processing step of a color reversal film, therefore there was a problem that the suppression of development which is not preferred occurs. In particular, influence is great, when a sensitizing development processing in which the first development time is elongated is carried out, and it is not yet dissolved within the range which is disclosed in JP-A-1-26852, and improvement has been further required.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide a technique of improving a desilverization property without damaging the preservation property and sensitivity of a lightsensitive material in the silver halide color reversal photographic light sensitive material.
The inventors have conducted extensive and intensive studies, and as a result, the object of the present invention was attained by the constitution below.
(1) A silver halide color photographic light-sensitive material comprising at least one blue-sensitive emulsion layer, at least one green-sensitive emulsion layer, and at least one red-sensitive emulsion layer on a support, the material containing at least one kind of a compound represented by formula (I):
Where each of R
1
, R
3
and R
4
independently represents a hydrogen atom or a substituent, R
2
represents a substituent, a represents an integer of 0 to 4, wherein if a is not less than 2, a plurality of R
2
's may be the same or different, and if a is 1, R
2
is selected from substituents having a &sgr;p value of 0 to 0.53, and if a is 2 to 4, R
2
is selected from substituents having a &sgr;p value of 0 to 0.53 in total, Time represents a group which releases -—S—R
5
after being eliminated as (Time)
t
-S—R
5
, t is 0 or 1, and R
5
represents an organic group which is bonded with S by its sp
3
carbon, wherein a sulfur atom of —S—R
5
is bonded with a carbon which is directly substituted with R
3
and R
4
, if t is 0.
(2) The silver halide color photographic lightsensitive material according to item (1) above, wherein at least one R
2
in formula (I) represents an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylaminocarbonyl group or an arylaminocarbonyl group.
(3) The silver halide color photographic lightsensitive material according to item (1) above, wherein the compound represented by formula (I) is represented by formula (II):
Where each of R
6
, R
9
and R
10
independently represents a hydrogen atom or a substituent, R
7
represents a group selected from an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkylaminocarbonyl group, and an arylaminocarbonyl group, R
8
represents a substituent, b is an integer of 0 to 3, wherein if b is 2 or 3, a plurality of R
8
's may be the same or different, and the total of the &sgr;p value of R
7
and the &sgr;p value of R
8
is 0 to 0.53, and R
11
represents an organic group which is bonded with S by its sp
3
carbon.
(4) The silver halide color photographic lightsensitive material according to item (3) above, wherein b in formula (II) is 0.
(5) A color image forming method wherein after imagewise exposure of the silver halide color photographic lightsensitive material according to any one of items (1) to (4) above, it is developed by the first development being black and white development, then subjected to reverse treatment, and color development is carried out in the presence of an aromatic primary amine color developer.
Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out hereinafter.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is explained in detail below.
Firstly, the compound represented by general formula (I) of the present invention is explained.
Firstly, R
1
is explained. R
1
represents a hydrogen atom or a substituent.
As examples when R
1
is a substituent, an alkyl group (including a cycloalkyl group and a bicycloalkyl group), an alkenyl group (including a cycloalkenyl group and a bicycloalkenyl group), an alkinyl group, an aryl group, a hetero ring group, a cyano group, a hydroxyl group, a nitro group, a carboxyl group, an alkoxy group, an aryloxy group, a silyloxy group, a hetero ring oxy group, an acyloxy group, a carbamoyloxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group (including an anilino group), an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkyl and arylsulfonylamino group, a m
Matsuda Naoto
Taniguchi Masahiko
Fuji Photo Film Co. , Ltd.
Le Hoa Van
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