Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Developer
Reexamination Certificate
2001-12-27
2003-09-16
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Developer
C430S933000
Reexamination Certificate
active
06620579
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a processing composition for a silver halide color photographic photosensitive material. In particular, the invention relates to a composition having excellent functions of reducing stain caused by residual dyes in a photosensitive material and of making no segregated deposit in low temperature storage of the processing composition.
BACKGROUND OF THE INVENTION
In the drastic progress of digital cameras as well as color printers, it has been desired that high quality images would rapidly be provided for customers in processing of color photographic photosensitive materials. However, when conventional processing processes had been conducted in a simply shortened time, the resulted image became colored to a level of objection with a large amount of sensitizing dyes remained in a white part of color print. Because of the simply shortened time of processing, sensitizing dyes in a photosensitive material were not enough washed out until processing had been completed. Also in case of a color negative film, such a situation occurred that production of the proper prints became impossible because of deterioration of color balance due to density increase at the minimum density area.
Further in recent years, tabular grains of silver halide as an important fundamental technique have been used in a highly photosensitive material for taking photographs. This technique gives effects of improving photosensitivity and a ratio between photosensitivity and graininess, since an amount of sensitizing dye used in a unit of volume can be increased. On the other hand, the technique gives an increase of dye amount remained in the photosensitive material after processing. In some processing conditions, the increase of residual amount of sensitizing dye can not be neglected but it results in phenomena that a density at the minimum density area of color negative film increases and that a highlight area of color reversal film is stained.
Research Disclosure
No. 20733 discloses a method using a bis-triazinylaminostilbene disulfonic acid compound as an example of a method for removing residual colors caused by sensitizing dyes. This method has widely been used in processing of color photographic photosensitive materials. Japanese Patent Laid-Open No. 329936/1994 discloses bis-triazinylaminostilbene disulfonic acid compounds having excellent solubility and being able to reduce residual colors even after time-shortened processing.
However, further condensation of a processing composition has been desired due to reasons of reducing waste containers, improving ability for recycling and reducing cost of transportation and storage. Any compound that dissolves in a stable state even under a high salt concentration by condensation and shows sufficient effects when used at its solubility or less even in a time-shortened processing has not been found yet.
SUMMARY OF THE INVENTION
The purpose of the present invention is to provide a processing composition for a silver halide color photographic photosensitive material for achieving reduction of stain caused by sensitizing dyes remained in a photosensitive material after processing and for making no segregated deposit even in low temperature-storage of the processing composition.
The problems described in the above were solved by the following invention.
1. A processing composition for a silver halide photographic photosensitive material, comprising a compound represented by Formula (I) described below and a compound represented by Formula (II) described below.
In Formula (I), X
1
, X
2
, Y
1
and Y
2
each independently represent an alkoxy group, an aryloxy group, an anilino group, an alkylamino group, a dialkylamino group or a nitrogen-containing heterocyclic group, a hydroxyl group, an amino group and a chloro group, which may be substituted. L represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group.
In Formula (II), X
3
, X
4
, Y
3
and Y
4
each independently represent an alkoxy group, an aryloxy group, an anilino group, an alkylamino group, a dialkylamino group or a heterocyclic group, a hydroxyl group, an amino group and a chloro group, which may be substituted. M represents a hydrogen atom, an alkali metal; an alkali-earth metal, ammonium or pyridinium.
2. The processing composition for a silver halide photographic photosensitive material as described in the foregoing 1 to be used in color development processing.
3. The processing composition for a silver halide photographic photosensitive material as described in the foregoing 1 or 2 to be used in processing of a silver halide color print photosensitive material.
4. An image-forming process using the processing composition for a silver halide photographic photosensitive material as described in any one of the foregoing 1 to 3.
The compound represented by Formula (I) of the invention gives no fluorescence and the compound represented by Formula (II) has fluorescent whitening function. By using these compounds together in processing of color print materials, it has become possible independently to control fluorescent whitening function and reduction of stain caused by sensitizing dyes. Accordingly, it has become possible to obtain compatibility between fluorescent whitening and reduction of stain, since stain can be reduced without density lowering in a shadow area and gradation softening due to excessive use of a fluorescent whitening agent. Further, by using both of the compound represented by Formula (I) and the compound represented by Formula (II) in combination, it has been found that each solubility of these compounds increases to make preparation of a more condensed processing composition possible. It has also been found that other components in the processing solution increase their solubility, and particularly, a developing agent increases its solubility.
DETAILED DESCRIPTION OF THE INVENTION
Formula (I) will be explained in detail hereinafter. When X
1
, X
2
, Y
1
, and Y
2
each represent an alkoxy group, an aryloxy group, an anilino group, an alkylamino group and a dialkylamino group, which may be substituted, these are expressed by Formula (III) as described below. Formula (III):
—O—R
1
—NHR
2
—NK
2
R
3
In Formula (III), R
1
, R
2
and R
3
are a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. When a group represented by R
1
, R
2
, or R
3
is an alkyl group, the alkyl group is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, preferably 1 to 8, and more preferably 1 to 4. Examples of the alkyl group include a methyl group, an ethyl group, an i-propyl group, a n-propyl group, a n-octyl group, a sulfomethyl group, a 2-hydroxyethyl group, a 3-hydroxypropyl group, a 2-hydroxypropyl group, a 2-sulfoethyl group, a 2-methoxyethyl group, a 2-(2-hydroxyethoxy)ethyl group, a 2-[2-(2-hydroxyethoxy)ethoxy] ethyl group, a 2-{2-[2-(2-hydroxyethoxy)ethoxy]ethoxy} ethyl group, a 2, 3-dihydroxypropyl group, a 3,4-dihydroxybutyl group and a 2,3,4,5,6-pentahydroxyhexyl group.
When R
1
, R
2
and R
3
represent an aryl group, the aryl group is a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, preferably 6 to 10, and more preferably 6 to 8. Examples of the aryl group include a phenyl group, a naphthyl group, a 3-carboxyphenyl group, a 4-carboxyphenyl group, a 3,5-dicarboxyphenyl group, a 4-methoxyphenyl group, a 2-sulfophenyl group, a 4-sulfophenyl group and a 2,4-disulfophenyl group.
When R
1
, R
2
and R
3
have a carboxyl group or a sulfo group, these groups may be a free body or a salt. In this case, a counter ion is an alkali metal, an alkali-earth metal, ammonium or pyridinium. Among them, sodium and potassium are most preferred.
X
1
, X
2
, Y
1
and Y
2
may be a one-valent (monovalent) 5- or 6-membered ring group in which a hydrogen atom bonding to a nitrogen atom is removed from a 5- or 6-membered aromatic or non-aromatic nitrogen-containing heterocyclic compound. Examples of
Nakai Yasufumi
Suzuki Makoto
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