Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Reexamination Certificate
2002-02-26
2004-02-10
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
C430S567000
Reexamination Certificate
active
06689555
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a silver halide color photographic light-sensitive material and, particularly, to a silver halide color photographic light-sensitive material using a photographic emulsion whose silver cloride content is high and which has high sensitivity, superior raw stock storability and exposure moisture dependency and suppresses fogging and to an image formation method using the light-sensitive material. Further, the present invention relates to a compound (a reducing compound having a group adsorptive to a silver halide) having a group adsorptive to a silver halide and a hydroxylamine partial structure, and a method for producing the compound and a silver halide emulsion comprising the compound.
2. Description of the Related Art
Silver iodochloride emulsions including a silver iodochloride layer on the surface or subsurface portion of silver halide particles are desirable because they have high sensitivity and superior adaptability to exposure at high intensity. Representative examples of these silver iodochloride emulsions are disclosed in, for example, U.S. Pat. Nos. 5,550,013, 5,728,516, 5,547,827, 5,605,789, 5,726,005 and No. 5,736,310. However, these disclosed methods have the drawback that as an iodine content increases photographically undesirable fogging increases.
It is disclosed in the publication of Japan Patent Application Laid-Open (JP-A) No. 4-368935 that a silver halide color light-sensitive material having superior raw stock storability characteristics can be obtained by using an adsorptive-type reducing compound represented by a hydroquinone compound having a group promoting adsorption to a silver halide particle. However, in this disclosed method, there is no description concerning the effects of, particularly, low fogging, high sensitivity and superior raw stock storability from a silver iodochloride or silver iodochlorobromide emulsion.
It is disclosed in the publication of JP-A No. 9-43764 that a specific hydroxam acid compound serves to obtain a silver halide color photographic light-sensitive material, and its packaging material which prevents pressure fogging when a long light-sensitive material is rolled in and stored at high temperatures. However, in this disclosed method, there is no description as to the effects of a silver iodochloride or silver iodochlorobromide or the effects of an adsorptive type.
In addition to the aforementioned compounds, the following compounds are known as antifoggants. Examples of these antifoggants include hydroxyureas (JP-A Nos. 2000-275767 and 8-246911), phenidones (JP-A No. 2000-330247), hydroxam acids (JP-A Nos. 11-282117, 9-90546, 9-133983, 8-114884, 8-333325 and 8-314051), heterocyclic hydroxylamines (JP-A No. 11-102046), hydroxysemicarbazides (JP-A No. 10-90819), hydroxyamines (JP-A No. 9-197635) and hydrazines (JP-A No. 7-134351 and specification of Japanese Patent No. 2787630). However, these disclosed methods have no particular effects of low fogging, high sensitivity and superior raw stock storability by a silver iodochloride or silver iodochlorobromide emulsion. There is a strong desire to develop compounds having such effects.
Also, we have not been able to find any literature describing detailed conditions of a method for producing a compound having both a group adsorptive to a silver halide and a hydroxylamine partial structure. It has been clarified that when these compounds are synthesized only by applying a generally known synthetic method, a lot of fogging affecting photographic performances arises depending on the condition. In view of this, it is necessary to establish a method of the production of a compound which has the adsorptive group and the hydroxylamine partial structure and is quite free from or remarkably reduced in fogging.
SUMMARY OF THE INVENTION
The present invention is intended to solve the aforementioned problems of the prior art and to attain the following objects. Specifically, a first object of the present invention is to provide a silver halide color photographic light-sensitive material using an emulsion which: includes silver iodochloride, silver chlorobromide or silver iodochlorobromide; has high sensitivity, suppressed fogging, superior raw stock storability and exposure moisture dependency; and is able to make full use of its high sensitivity and applicability to high-intensity exposure; and to provide an image formation method using the light-sensitive material.
A second object of the present invention is to provide a compound, which has a group adsorptive to a silver halide and a hydroxylamine partial structure, and a silver halide emulsion, which are able to attain the first object efficiently.
A third object of the present invention is to provide a method for producing the compound having a group adsorptive to a silver halide and a hydroxylamine partial structure, the compound having no problems concerning photographic performance (particularly fogging does not occur).
According to a first aspect of the present invention, there is provided a silver halide color photographic light-sensitive material comprising, on a support, at least one layer of each of a blue-sensitive silver halide emulsion layer, which includes a yellow coupler, a green-sensitive silver halide emulsion layer, which include a magenta coupler, and a red-sensitive silver halide emulsion layer, which includes a cyan coupler, wherein at least one of said blue-sensitive, green-sensitive and red-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol %, at least one of a silver iodide content of 0.05 mol % to 0.75 mol % and a silver bromide content of 0.05 mol % to 4.00 mol % and further includes at least one compound which is represented by the following Formula (I)
X—(L)
n
—Y Formula (I)
wherein X represents a group adsorptive to a silver halide, L represents a divalent connecting group comprising one of an atom and an atomic group including at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Y denotes a reducible group and n denotes an integer of 0 or 1.
According to a second aspect of the present invention, there is provided an image formation method comprising the steps of scan-exposing, on the basis of image information, a silver halide color photographic light-sensitive material and color developing said scan-exposed silver halide color photographic light-sensitive material, wherein said silver halide color photographic light-sensitive material is the above-described silver halide color photographic light-sensitive material.
According to a third aspect of the present invention, there is provided a silver halide emulsion comprising at least one compound represented by the following Formula (IV):
X—(L
1
)
n
—Y
3
Formula (IV)
wherein: X represents a group adsorptive to a silver halide, n denotes an integer of 0 or 1; L
1
represents a divalent connecting group, provided that the atom of L
1
, which is directly connected to Y
3
, is a carbon atom; Y
3
is any group selected from the groups represented by the following (B
1
) to (B
4
); and R
b1
, R
b2
and R
b3
in the groups represented by the following (B
1
) to (B
4
) respectively denotes one of a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group and a heterocyclic group:
According to a fouth aspect of the present invention, there is provided a compound represented by the following Formula (V):
X—(L
2
)
n
—Y
3
Formula (V)
wherein X represents a group adsorptive to a silver halide; n denotes an integer of 0 or 1; L
2
represents a divalent connecting group comprising any one of an alkylene group, —CO—, —SO
2
—, —NR— and a combination of at least two of these groups, provided that the atom of L
2
, which is directly connected to Y
3
, is a carbon atom; R represents one of a hydrogen atom, an alkyl group and an aryl group; Y
3
is any group selected from the groups represented by the following (B
1
) to (B
4
); R
Ichikawa Shin-ichi
Inaba Tadashi
Matsunaga Atsushi
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