Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Reexamination Certificate
2001-03-14
2002-12-03
Schilling, Richard L (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
C430S217000, C430S218000, C430S219000, C430S264000, C430S383000, C430S598000
Reexamination Certificate
active
06489088
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a color diffusion-transfer photographic light-sensitive material, and particularly to a color diffusion-transfer photographic light-sensitive material that is improved in the storability of a nucleating agent and a light-sensitive material.
BACKGROUND OF THE INVENTION
The present invention relates to a color diffusion-transfer photographic light-sensitive element providing directly a positive photographic image.
In the field of silver halide photographic methods, a photographic method enabling the preparation of a positive photographic image through neither a negative image nor an intermediate process of obtaining a negative image, is referred to as a direct positive photographic method, and a photographic light-sensitive material used in such a photographic method is referred to as a direct positive light-sensitive material.
Although there are various direct positive photographic methods, the most useful are systems in which a positive-type emulsion (silver development takes place at unexposed portions) is combined with a negative-type dye image-forming compound (a dye image is formed at developed (exposed) portions), and systems in which a negative-type emulsion (silver development takes place at exposed portions) is combined with a positive-type dye image-forming compound (a dye image is formed at unexposed portions).
As to the former system, a frequently used method is one in which a silver halide emulsion that has light-sensitive nuclei inside of silver halide particles, is developed in the presence of a nucleating agent, after an exposure step is finished.
Methods of obtaining a direct positive image by carrying out surface development of an internal latent image-type silver halide photographic emulsion in the presence of a nucleating agent, and photographic emulsions or light-sensitive materials used in such a method, are known from descriptions of, for example, U.S. Pat. No. 2,456,953, No. 2,497,875, No. 2,497,876, No. 2,588,982, No. 2,592,250, No. 2,675,318, and No. 3,227,552; U.K. Patents No. 1,011,062 and No. 1,151,363, and JP-B-43-29,405 (“JP-B” means examined Japanese patent publication).
Various reducing agents can be used as a nucleating agent in the aforementioned method of obtaining a direct positive image. Among these reducing agents, acylhydrazine-type compounds are particularly effective. Thiourea-bonded-type acylhydrazine-series compounds are disclosed in U.S. Pat. No. 4,030,925, No. 4,031,127, No. 4,245,037, No. 4,255,511, No. 4,266,013, and No. 4,276,364; and U.K. Patent No. 2,012,443, and acylhydrazine-series compounds having a thioamide ring or a heterocyclic group, such as triazole or tetrazole, as an adsorbing group, are disclosed in U.S. Pat. No. 4,080,270 and No. 4,278,748, and U.K. Patent No. 2,011,391B.
On the other hand, in the system using a negative-type emulsion and a positive-type image dye-forming agent, it is effective to promote developing by using a nucleating agent, and it is known that the promotion of the formation of a dye image is attained by use of the nucleating agent.
For color diffusion-transfer photographic light-sensitive materials, it is particularly important to make the time short, which is taken from shooting to formation of an appreciable image. For this purpose, an addition of a large amount of a nucleating agent having a strong fogging action is effective to promote developing, in both a negative type emulsion system and a positive type emulsion system. Such an addition makes it possible to obtain an image that requires short emergence time and has a high maximum image density. However, this method, in turn, has the problem that a variation in sensitivity and a rise in minimum image density (Dmin) during storage are significantly occurred.
SUMMARY OF THE INVENTION
A color diffusion-transfer light-sensitive material that has, on a support, at least two light-sensitive silver halide emulsion layers, which are combined with a non-diffusive dye image forming compound that forms or releases a diffusive dye or its precursor in association with silver development, or with a dye image forming compound whose diffusibility changes in association with silver development is provided. This light-sensitive material comprises a compound represented by the following formula (I) and at least one from compounds represented by formulae (II) to (V):
wherein R
20
represents an aliphatic group, an aromatic group, or a heterocyclic group, R
10
represents a hydrogen atom, or a block group, G
10
represents —CO—, —COCO—, —C(═S)—, —SO
2
—, —SO—, or —PO(R
30
)— group (R
30
is selected from the same range of the groups defined for R
10
, and R
30
may be different from R
10
), or an iminomethylene group, and A
10
and A
20
each represent a hydrogen atom, or one of A
10
and A
20
represents a hydrogen atom and the other represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group;
wherein each of R
11
, R
R
12
, R
13
, and R
14
independently represent a hydrogen atom, an aryl group, a chain or cyclic alkyl group, a chain or cyclic alkenyl group, or an alkinyl group, and R
15
represents a chain or cyclic alkyl group, a chain or cyclic alkenyl group, an alkinyl group, an aryl group, or a heterocyclic group; formula (III)
wherein Het represents an adsorptive group to a silver halide, provided that the group represented by Het is substituted by at least one —(Q)k2—(Hy); Q represents a divalent connecting group that comprises an atom or an atomic group containing at least one of a carbon atom, a nitrogen atom, a sulfur atom, and an oxygen atom, Hy represents a group having a hydrazine structure represented by R
1
R
2
N—NR
3
R
4
, each of R
1
, R
2
, R
3
, and R
4
independently represent an alkyl group, an alkenyl group, an alkinyl group, an aryl group, or a heterocyclic group, and R
1
and R
2
, R
3
and R
4
, R
1
and R
3
, or R
2
and R
4
may respectively bond to form a ring, provided that at least one of R
1
, R
2
, R
3
, and R
4
is an alkylene group, an alkenylene group, an alkinylene group, an arylene group, or a divalent heterocyclic residue, to be substituted by —(Q)k2—(Het)k1, k1 and k3 independently denote 1, 2, 3 or 4, and k2 denotes 0 or 1;
wherein in formula (IV-A), R
a1
represents a substituted or unsubstituted alkyl, alkenyl, or aryl group, R
a2
represents a hydrogen atom, or a group defined for R
a1
, R
a3
represents a hydrogen atom, or a substituted or unsubstituted alkyl or alkenyl group having 1 to 10 carbon atoms, and R
a1
and R
a3
, or R
a2
and R
a3
may bond with each other to form a five- to seven-membered ring; in formula (IV-B), X represents a heterocyclic group, R
b1
represents an alkyl group, an alkenyl group, or an aryl group, X and R
b1
may bond with each other to form a five- to seven-membered ring; and in formula (IV-C), Y represents a non-metal atomic group required to form a five-membered ring in combination with a —N═C— group; Y further represents a non-metal atomic group required to form a six-membered ring in combination with a —N═C— group, and the end of Y, which connects with the carbon atom of the —N═C— group, represents one group (that connects with the carbon atom of an —N═C— group on the left side of each group) selected from the group consisting of —N(R
C1
)—, —C(R
C2
)(R
C3
)—, —C(R
C4
)═, —O— and S—; each of R
C1
, R
C2
, R
C3
and R
C4
independently represent a hydrogen atom or a substituent;
wherein in formula (V), each of R
21
, R
22
and R
23
independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkinyl group, an aryl group, or a heterocyclic group, R
24
represents a hydrogen atom, an alkyl group, an alkenyl group, an alkinyl group, an aryl group, a heterocyclic group, or NR
25
R
26
, L
21
, represents —CO— or —SO
2
—, n denotes 0 or 1, R
25
represents a hydrogen atom, a hydroxy group, an amino group, an alkyl group, an alkenyl group, an alkinyl group, an aromatic group, or a
Fukagawa Nobutaka
Ichikawa Shin-ichi
Yoshikawa Masaru
Fuji Photo Film Co. , Ltd.
Schilling Richard L
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