Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Developer
Reexamination Certificate
2002-08-22
2003-11-25
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Developer
C430S493000, C430S933000
Reexamination Certificate
active
06653059
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a color development processing composition for use in processing of a silver halide color photographic material and a development processing method using the same, more specifically, relates to a color development processing composition capable of obtaining good color balance even when color developing time is shortened, heaving practicably sufficient solubility even when the processing composition is the state of liquid, and not generating coloring of the container, and also relates to a development processing method using the same.
BACKGROUND OF THE INVENTION
In recent years, with the spread of a small-sized service system of processing in a store called a mini-lab, shortening of the required time of development processing of a silver halide photographic material (hereinafter it is also called “a photographic material” for the sake of simplicity) is strongly demanded for rapidly responding to the demand of processing of customers
As the means of shortening color developing speed, increasing the pH of a developing solution and processing temperature has been tried, but photographic performances are subject to heavy fluctuations by continuous processing and the stability of a developing solution is also deteriorated, therefore, these means are practicably limitative.
Speedup of processing by high activation of a color developing solution has so far been variously discussed, e.g., by high concentration of a color developing agent as disclosed in JP-A-4-67038 (the term “JP-A” as used herein means an “unexamined published Japanese patent application”) and increasing of processing temperature as disclosed in JP-A-4-81848.
However, since a color developing agent and an alkali agent percolate, react and consume from the uppermost layer of a photographic material in a color development processing step, the arrival of the active ingredients of a developing agent and an alkali agent at the lowermost layer is delayed. In particular, when rapid processing is performed, since a developing agent is not supplied to the lowermost layer sufficiently, the improvement of the developing velocity of the lowermost layer is an especially important problem to be solved for advancing rapid processing. When developing time is shortened for the purpose of accelerating color developing velocity, percolation and supply of a developing agent are in general limited, and the development of the layer nearer to the support (the lower layer) is delayed as compared with the development of the layer farther from the support (the upper layer), as a result, color balance is lost and color reproduction comes to worsen conspicuously.
As a means to make it possible to realize rapid processing without being accompanied by the disorder of color balance and the worsening of color reproduction due to high temperature and high activation, JP-A-2001-166440 proposes to use a composition of color development processing agent containing at least one of polyethylene glycols, polyvinyl pyrrolidones or thioureas with alkylsulfonate. Although this is an effective means to solve the above problem, when high activation step is carried out, such that a development accelerating compound is added, a developing agent is highly concentrated, or the pH value of a developing solution is made high, a developer composition is generally adsorbed onto the container of the developer composition and the container is colored, in particular, under high temperature and high humidity conditions (a heat humidity condition), thus product life is generally impaired. The coloring of containers is also actualized in the above proposals. Further, there are cases where the constitutional members of an automatic processor are also colored by such a composition of processing agent. Accordingly, this method cannot be a sufficient means to solve the above problem in a practicable point.
As another problem, when a color developing solution contains a diaminostilbene derivative for the purpose of prevention of contamination of a photographic material, hindrance, such as the formation of dissolved product and the generation of turbidity, is liable to occur during storage, since the solubility is not sufficient. In particular, when a color developer composition is a liquid mixed processing agent, high concentration is largely restricted by solubility, therefore, constitution of composition capable of high concentration has been demanded.
SUMMARY OF THE INVENTION
The present invention has been performed on the basis of the above background for the purpose of providing a liquid development processing agent which is satisfied in all of the resistance to the coloring of the container of a processing agent composition, solubility and rapid development property, and providing a development processing method using the development processing agent. Specifically, the objects of the present invention is to provide a composition of liquid development processing composition which (i) has sufficient solubility not to generate turbidity and precipitation during storage of the processing composition, (ii) hardly generates the coloring of the container of the processing composition during storage even when the processing composition is a highly concentrated liquid, and (iii) has rapid development aptitude capable of obtaining good color balance even when developing time is shortened by increasing the developing temperature, increasing the activity of the processing agent, and increasing the concentration of the processing agent, and to provide a development processing method using the same composition.
The present inventors have found that the above problems can be solved by a development processing solution containing bis (triazinylamino)stilbene of specific structure having at least 4 sulfonic acid groups in the molecule together with ethylene glycols of a specific combination, and, on the basis of this fact, the present invention described in the followings.
(1) A liquid processing composition for a color development of a silver halide color photographic material, which comprises:
at least one compound represented by the following formula (I);
at least one glycol selected from the group consisting of ethylene glycol, diethylene glycol and triethylene glycol; and
at least one polyethylene glycol having a number average molecular weight of from 1,000 to 2,000:
wherein R
11
and R
12
each independently represents a hydrogen atom or an alkyl group; R
13
and R
14
each independently represents a hydrogen atom, an alkyl group or an aryl group; R
15
represents an alkyl group having at least one asymmetric carbon atom, or a group represented by the following formula (I-a); R
16
represents an alkyl group having at least one asymmetric carbon atom, or a group represented by the following formula (I-b); and M
1
represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an ammonium group or a pyridinium group; R
13
and R
15
, and R
14
and R
16
may be bonded to each other to form a ring;
—CH
2
O(CH
2
CH
2
O)
n
11
H (I-a)
wherein n
11
represents an integer of from 1 to 3;
—(CH
2
CH
2
O)
n
12
H (I-b)
wherein n
12
represents an integer of from 2 to 4.
(2) The liquid processing composition for a color development of a silver halide color photographic material as described in the item (1), wherein in formula (I), at least one of R
15
and R
16
includes a hydroxyl group.
(3) The liquid processing composition for a color development of a silver halide color photographic material as described in the item (1), wherein in formula (I), R
11
, R
12
, R
13
and R
14
each independently represents a hydrogen atom or a methyl group, R
15
is a group represented by formula 2), 5) or 11) below, or a group represented by formula (I-a) wherein n
11
is 1, R
16
is a group represented by formula 17), 20) or 26) below, or a group represented by formula (I-b) wherein n
12
is 2, M
1
is Na or K:
(4) The liquid processing composition for a color development of a silver halide color photographic
Burns Doane , Swecker, Mathis LLP
Fuji Photo Film Co. , Ltd.
Le Hoa Van
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