Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1988-03-07
1990-06-26
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430376, 430387, 430445, 430446, 430447, 430464, 430467, 430468, 430474, 430476, 430484, 430567, G03C 730, G03C 732
Patent
active
049371789
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a processing method for a silver halide color photographic light-sensitive material and a color developer used therein, in particular to a processing method for a silver halide color photographic light-sensitive material providing a dye image with excellent graininess and a color developer used to embody this method.
BACKGROUND OF THE INVENTION
Recently, miniaturization of a silver halide color photographic light-sensitive material is being developed. More specifically, to miniature a camera for better portability, miniaturization of an image size on a film is in progress. It is, however, well known that such an arrangement incurs a deteriorated printed image quality. More specifically, a smaller image size in a color photographic light sensitive-material necessitates a greater enlargement ration for preparing a specific size of final print, and such a printed image accordingly has high graininess as well as poor sharpness. Therefore, it is necessary, in preparing an excellent print even with a miniaturized image size on a film, to improve the graininess, resolution and sharpness of a film.
As the method to improve graininess, among these requirements for improved silver halide color photographic light-sensitive materials, the following are available: a method, as described in Japanese Patent Publication Open to Public Inspection (hereinafter referred to as Japanese Patent O.P.I. Publication) No. 62454/1980, for using a rapid-reacting type coupler; a method, as described in the Theory of the Photographic Process, 4th Ed., pp. 620-621, by T. H. James, increasing the number of silver halide particles per unit of photographic material; a method, as described in British Pat. No. 2,080,640A, for using a non-diffusion type coupler for forming a diffusion type dye which emit an appropriately small amount of dye upon reaction with an oxidation product of color developing agent; a method, as described in Japanese Patent O.P.I. Publication No. 128443/1985, for increasing a ratio of silver iodide content to more than 8 mol %; other improvement methods as described in Japanese Patent O.P.I. Publication Nos. 191036/1984, 3682/1985, 128440/1985 and the like; a technique, as described in Japanese Patent Examined Publication No. 15495/1974, Japanese Patent O.P.I. Publication Nos. 7230/1978, 155539/1982 and the like, wherein an improvement is achieved by modifying the constitution of structural layers in a silver halide color photographic light-sensitive material.
Though the above-mentioned methods for improving a light-sensitive material positively improves graininess, the degree of improvement is not yet satisfactory. Poor graininess poses an obstacle against common use of a light-sensitive material in an extremely small format for example in the case of so-called "disk-film", and therefore has necessitated improvement.
In Chiba University, Engineering Department, Research Report Vol. 33 (1), Vol. 63 in whole number, (1980), pp. 45-48, is described the technique of "Image improvement of color negative film by rapid processing" by Arai et. al. In this report, it is mentioned that two layers i.e. cyan and magenta layers which are separated from a support are provided with approximately 20 to 30% increase in image information by means of highly active color developer as well as high-temperature rapid processing, and results in increase in sharpness, at a cost of deteriorated graininess in an image. This has been a theory established in the photographic art.
The present invention is intended to solve the above disadvantage. Therefore, the object of the invention is to a rapid processing method for a silver halide color photographic light-sensitive material providing a dye image with excellent sharpness and graininess, as well as a color developer used to embody this method.
DISCLOSURE OF THE INVENTION
The inventors have continued devoted research in order to attain the above object, and found that such a processing method complies with the above object. That is a
REFERENCES:
patent: 3201242 (1965-08-01), Schwan et al.
patent: 3706562 (1972-12-01), Herz et al.
patent: 3985564 (1976-10-01), King
patent: 4465762 (1984-08-01), Ishikawa et al.
patent: 4482626 (1984-11-01), Twist et al.
patent: 4546068 (1985-10-01), Kuse
patent: 4634660 (1987-01-01), Mifune et al.
patent: 4668614 (1987-05-01), Takada et al.
patent: 4728602 (1988-03-01), Shibahara et al.
patent: 4745047 (1988-05-01), Asami et al.
patent: 4762778 (1988-08-01), Yamazaki et al.
patent: 4774166 (1988-09-01), Sasaki et al.
patent: 4774167 (1988-09-01), Koshimizu et al.
Derwent Abstracts of J60162253, J5595949 and J5574542.
Hiroko Arai et al. Research Report Eng. Dept. Chiba Univ. vol. 33, No. 1, whole number 63, 1980 pp. 45-48.
Radiation Chemistry and Photochemistry, vol. 67, 1967 69415t-Mechanism of Polyethylenglycol Action in Photographic Emulsions and developers, p. 6529.
Dye Image Forming Method, vol. 9, No. 137 (p. 363) [1860], Jun. 12, 1985, Abstract Only.
Research Disclosure, No. 16480, Dec. 1977, pp. 60-63, Industrial Opportunities, Ltd., Photographic Color Developer Compositions.
Photofinishing Techniques and Equipment, Jack H. Coote, 1970, pp. 164-165.
Hagiwara Moeko
Koboshi Shigeharu
Kurematsu Masayuki
Kuse Satoru
Doody Patrick
Konica Corporation
Michl Paul R.
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