Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Reexamination Certificate
2002-03-18
2004-05-25
Letscher, Geraldine (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
C430S506000, C430S505000, C430S504000, C430S503000, C430S502000, C430S567000
Reexamination Certificate
active
06740481
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims the benefit of priority from the prior Japanese Patent Applications No. 2001-079388, filed Mar. 19, 2001; and No. 2001-140313, filed May 10, 2001, the entire contents of both of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a silver halide color photographic material, specifically, a color reversal material excellent in the color saturation, the faithfulness of intermediate color, and description.
Further, the present invention relates to a method of forming a color reversal image using the above-mentioned silver halide color photographic material.
2. Description of the Related Art
In the color photographic material, if the improvement of saturation is limited only to primary colors, it can be realized by lessening the overlap in the spectral sensitivity distribution of blue-, green- and red-lightsensitive emulsion layers, but in this case, the faithfulness of intermediate color is deteriorated (for example, Satoru Honjou, “Characteristic and Technique of Color Reversal Film” Journal of Japan Photography Academy Vol.48, p.274 (1985)). It is disclosed in Jpn. Pat. Appln. KOKAI Publication No. (hereinafter, referred to as JP-A-) 2-272450, JP-A's-2-272540 and 3-122636 that a color photographic material having a silver halide emulsion layer from which a development-inhibiting agent is released in black and white development and substantially no contribution is provided to the formation of color dye, is effective in order to improve the color saturation of a color reversal photographic material and the faithfulness of hue including an intermediate color. However, according to these techniques, although the improvement in the saturation of primary colors and the discrimination in the region of from blue to green are superior, there is a problem in the faithfulness of the intermediate colors, therefore it is necessary to solve the problem.
As a technique for improving the color fidelity, as described in the specifications of U.S. Pat. Nos. 4,663,271, 4,705,744 and 4,707,436, JP-A's-62-160448 and 63-89850, there is disclosed an invention in which an inter image effect-donating layer having a different spectral sensitivity distribution from that of blue-, green- and red-main lightsensitive layers is arranged. However, there is hardly found a specific description of actually realizing this in the system of a color reversal photographic material. Even if the color reversal material is actually manufactured by such configuration, the inter-image effect from a donor layer is not sufficiently expressed, the color-mixing from a layer provided in the vicinity of the donating layer is enhanced, and it was found out that the color of a photographed body cannot be adequately and faithfully reproduced.
Further, in JP-A's-2-272450, 3-122636 and 8-328212, those concerning a method of providing the inter image effect-donating layer and a method of setting spectral sensitivity in the silver halide color photographic material are disclosed. However, since the inter-image effect from a donor layer is not adequately expressed even by these configurations and a color-sensitive color layer provided in the vicinity of the donor layer generates an unnecessary color and color opaque by an emulsion which the donor layer contains, it was grasped that the color of a photographed body cannot be adequately and faithfully reproduced.
JP-A's-4-039653 and 4-039654 disclose techniques concerning the gradation design of a color reversal film for improving the flesh color fidelity. However, these techniques designed to optimized the flesh color reproduction by “lowering the inclination in D-log E curve of magenta in comparison with that of yellow”, and bring about serious defect that a gray color changes depending on its concentration. The term “flesh color” herein means the light-skin of Macbeth color chart No.2. “These publications are silent about any method of technically improving the defect. Further, these are techniques for stabilizing the tint change of flesh colors having different concentrations, and nothing is taken into consideration concerning the improvement in the faithfulness of various intermediate colors.
Therefore, in the color reproduction of a color reversal photographic material, development in a technique by which both saturation and faithfulness are compatible, is desired.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide a silver halide color photographic material, specifically, a color reversal material in which the saturation of color reproduction and the hue faithfulness of intermediate color are improved.
Further, it is also an object of the present invention to provide a method of forming a color reversal image using the above-mentioned silver halide color photographic material.
The inventors have conducted extensive and intensive studies, and as a result, the objects of the present invention have been attained by the procedures below.
(1) A silver halide color photographic material comprising at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (GL layer) and at least one red-sensitive emulsion layer (RL layer) on a support, wherein,
a maximum absorption wavelength of the green-sensitive emulsion layer represented by &lgr;max(G) being in the range of 500 nm≦&lgr;max(G)≦570 nm, and
the photographic material further having at least one short-wavelength-green-sensitive emulsion layer (CL layer) meeting the following requirements (i) and (ii):
(i) a maximum absorption wavelength of the CL layer represented by &lgr;max(C) being in the range of 490 nm≦&lgr;max(C)≦560 nm, and 80 nm≧&lgr;max(G)−&lgr;max(C)≧5 nm, and
(ii) the total iodine amount of silver halide grains contained in the CL layer being in the range from 60% to 300% of that contained in the green-sensitive emulsion layer
(2) A silver halide color photographic material comprising at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (GL layer) and at least one red-sensitive emulsion layer (RL layer) on a support, wherein,
a weight-averaged wavelength of spectral sensitivity distribution of the green-sensitive emulsion layer represented by &lgr;G being in the range of 500 nm≦&lgr;G≦570 nm, and
the photographic material further having at least one short-wavelength-green-sensitive emulsion layer (CL layer) meeting the following requirements (iii) and (iv):
(iii) a weight-averaged wavelength of spectral sensitivity distribution of the CL emulsion layer represented by &lgr;C being in the range of 490 nm≦&lgr;C≦560 nm, and 80 nm≧&lgr;G−&lgr;C≧5 nm, and
(iv) the total iodine amount of silver halide grains contained in the CL layer being in the range from 60% to 300% of that contained in the green-sensitive emulsion layer
(3) A silver halide color photographic material comprising at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (GL layer) and at least one red-sensitive emulsion layer (RL layer) on a support, wherein,
a maximum absorption wavelength of the blue-sensitive emulsion layer represented by &lgr;max(B) being in the range of 440 nm≦&lgr;max(B)≦500 nm, and
the photographic material further having at least one short-wavelength-blue-sensitive emulsion layer (VL layer) meeting the following requirements (v) and (vi):
(v) a maximum absorption wavelength of the VL layer represented by &lgr;max(V) being in the range of 400 nm≦&lgr;max(V)≦460 nm, and 100 nm≧&lgr;max(B)−&lgr;
2
max(V)≧5 nm, and
(vi) the total iodine amount of silver halide grains contained in the VL layer being in the range from 40% to 250% of that contained in the blue-sensitive emulsion layer
(4) A silver halide color photographic material comprising at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (
Nagaoka Katsuro
Sato Minoru
Fuji Photo Film Co. , Ltd.
Letscher Geraldine
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