Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Reexamination Certificate
2001-07-03
2003-04-15
Le, Hoa Van (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
C430S558000
Reexamination Certificate
active
06548237
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATION
This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2000-202488, filed Jul. 4, 2000, the entire contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
The present invention relates to a novel color coupler compound and further to a silver halide color photographic lightsensitive material containing the same and a method of forming an image with the use thereof. More particularly, the present invention relates to a silver halide color reversal photographic lightsensitive material and a method of forming an image with the use thereof.
In recent years, there is a strong demand for a silver halide color lightsensitive material exhibiting not only high sensitivity, high sharpness and excellent graininess but also enhanced color reproduction.
In the field of silver halide color photographic lightsensitive materials, although 1-phenyl-5-pyrazolone couplers have widely been employed as magenta couplers, pyrazolotriazole magenta couplers which form a dye of hue with less secondary absorption, preferred as an image forming dye, have also become widely employed.
Although pyrazolotriazole magenta couplers are attractive compounds in their characteristics of exhibiting desirable hue, those wherein the position for coupling with an aromatic primary amine developing agent in an oxidized form is a hydrogen atom, generally known as four-equivalent couplers, have a drawback in that yellow coloring would occur with the passage of time after the development thereof.
On the other hand, two-equivalent couplers wherein the coupling position is substituted with a coupling split-off group other than a hydrogen atom (e.g., a halogen atom) have the characteristic of exhibiting less tendency toward yellow coloring as compared with that of the four-equivalent couplers.
With respect to a color reversal photographic lightsensitive material, the first development is followed by the reversal processing and the color development in this sequence. The use of two-equivalent couplers in the color reversal photographic lightsensitive material invites an intrinsic problem of sensitivity decrease as compared with the use of four-equivalent couplers because the color forming capability per mol of silver is high in the use of two-equivalent couplers. Therefore, when the pyrazolotriazole magenta couplers are applied to the color reversal photographic lightsensitive material, it is preferred to employ the four-equivalent couplers from the viewpoint of sensitivity. The application of four-equivalent pyrazolotriazole magenta couplers to a color reversal photographic lightsensitive material is disclosed in, for example, Jpn. Pat. Appln. KOKAI Publication Nos. (hereinafter referred to as JP-A's) 5-100382 and 63-153548. However, the above-mentioned problem of yellow coloring with the passage of time after the processing has not yet been solved. In particular, it has been a problem that an increase of yellow stain is caused when a sample having been allowed to stand still for a prolonged period of time after the processing is irradiated with light. With respect to this stain, an improvement can be effected by changing a partial structure of coupler, but it has been unsatisfactory.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide a silver halide color photographic lightsensitive material which is excellent in color reproduction and in image fastness (fastness to light and fastness to dark heat) and which minimizes staining.
It is another object of the present invention to provide a color reversal photographic lightsensitive material which is excellent in the storagebility of lightsensitive material and is highly resistant to development processing composition variations. It is a further object of the present invention to effect an improvement in the yellow stain occurring when a sample having been allowed to stand still for a prolonged period of time after the processing is irradiated with light.
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 inventors have conducted extensive and intensive studies with respect to additives used in combination with four-equivalent pyrazolotriazole couplers. As a result, it has been found that a compound of specified structure suppresses staining and, in particular, effectively suppresses the stain occurring when a sample having been allowed to stand still for a prolonged period of time after the processing is irradiated with light. It has further been found that the fastness of color image can also been enhanced thereby. The present invention has been completed on the basis of these findings.
The above objects of the present invention have been attained by the following means.
(1) A silver halide color photographic lightsensitive material comprising, on a support, at least one silver halide emulsion layer, wherein the silver halide color photographic lightsensitive material contains
at least magenta coupler represented by a general formula (MC-I):
wherein, each of R
31
and R
32
independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group; and
at least one compound selected from a group consisting of compounds represented by a general formula (TS-I), compounds represented by a general formula (TS-II) and compounds represented by a general formula (TS-III):
wherein in the formula (TS-I), R
1
represents any of a hydrogen atom, a substituted or unsubstituted alkyl group (including a cycloalkyl group and a bicycloalkyl group), a substituted or unsubstituted alkenyl group (including a cycloalkenyl group and a bicycloalkenyl group), a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted acyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted aryloxycarbonyl group, a substituted or unsubstituted alkylsulfonyl group (including a cycloalkylsulfonyl group and a bicycloalkylsulfonyl group), a substituted or unsubstituted arylsulfonyl group, a substituted or unsubstituted phosphino group, a substituted or unsubstituted phosphinyl group and a group of the formula —SiR
21
R
22
R
23
wherein each of R
21
, R
22
and R
23
independently represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted alkenyloxy group or a substituted or unsubstituted aryloxy group; —X
1
— represents —O—, —S— or —N(R
24
)— wherein R
24
has the same meaning as R
1
; and R
2
, R
3
, R
4
, R
5
and R
6
may be identical with or different from each other, and each thereof represents a hydrogen atom or a substituent, provided that R
1
and R
2
, or R
24
and R
6
, or R
1
and R
24
, may be bonded with each other to thereby form a 5 to 7 membered ring, provided that R
2
and R
3
, or R
3
and R
4
, or R
4
and R
5
, or R
5
and R
6
, may be bonded with each other to thereby form a 5 to 7 membered ring, Spiro ring or bicyclo ring, and provided that R
1
, R
2
, R
3
, R
4
, R
5
, R
6
and R
24
are not simultaneously hydrogen atoms;
in the formula (TS-II), each of R
11
, R
12
, R
13
and R
14
independently represents any of a hydrogen atom, a substituted or unsubstituted alkyl group (including a cycloalkyl group and a bicycloalkyl group) and a substituted or unsubstituted alkenyl group (including a cycloalkenyl group and a bicycloalkenyl group), provided that R
11
and R
12
or R
13
and R
14
may be bonded with each other to thereby form a 5 to 7 membered ring; X
2
represents any of a hydrogen atom, a substituted or unsubstitut
Fukuzawa Hiroshi
Matsuda Naoto
Mikoshiba Hisashi
Birch & Stewart Kolasch & Birch, LLP
Fuji Photo Film Co. , Ltd.
Le Hoa Van
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