Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1988-05-10
1991-04-09
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430505, 430551, 430552, 430553, 430558, G03C 108, G03C 732
Patent
active
050064533
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a silver halide color photographic material, and more particularly relates to a silver halide color photographic material which provides dye images having improved preservability.
BACKGROUND OF THE INVENTION
It is known that dye images formed from silver halide color photographic materials are sometimes permitted to be exposed to irradiation by light for a long period of time or are left in a dark place for a long time with only a short period of irradiation to light. These conditions can cause severe fading of the dye image. In general, fading under the first circumstance is known as light fading and fading under the second circumstance is called dark fading. When records formed from color photographic light-sensitive material are semipermanently stored, control over such light fading and dark fading to as great an extent as possible and maintenance of three color balance in the fading of yellow, magenta and cyan dye images are necessary so that the initial state of color balance is maintained. However, the degree of light fading and dark fading of yellow, magenta and cyan dye images are different from each other and, thus, the three color balance of yellow, magenta and cyan dye images is destroyed, resulting in degradation of image quality.
Although the degree of light fading and dark fading is naturally different depending on the particular color couplers employed and other factors, in many cases dark fading is apt to occur in the order of cyan dye images, yellow dye images and magenta dye images, and the degree of dark fading in cyan dye images is particularly great compared with that of other dye images. Light fading also tends to occur in the order of cyan dye images, yellow dye images and magenta dye images, particularly when the light source is emitting a large amount of ultraviolet rays.
Therefore, maximum prevention of light fading and dark fading of cyan dye images is necessary in order to maintain three color balance between yellow, magenta and cyan dye images for a long period of time. For the purpose of preventing light fading and dark fading of dye images, various kinds of investigations have been heretofore made, which mainly have followed to approaches to the problem. One approach has been to develop novel couplers which can form dye images having less a tendency to fade. The other approach has been to develop novel additives capable of preventing fading.
A large number of phenol type cyan couplers which form cyan dyes are known. However, 2-(.alpha.-2,4-di-tert-amylphenoxybutanamido)-4,6-dichloro-5-methylphenol as described in U.S. Pat. No. 2,801,171, for example, has the disadvantage that the dye formed therefrom has poor heat fastness while it has good light fastness.
Further, cyan couplers having an alkyl group containing 2 or more carbon atoms substituted on the 3-position or 5-position of phenol are described, for example, in Japanese Patent Publication No. 11572/74, Japanese Patent Application (OPI) Nos. 209735/85 and 205447/85 (the term "OPI" as used herein refers to a "published unexamined Japanese patent application"), etc. The heat fastness of cyan images formed from these couplers is improved to some extent but still insufficient.
Moreover, 2,5-diacylaminophenol type cyan couplers in which the 2-position and 5-position of the phenol are substituted with an acylamino group are described, for example, in U.S. Patents 2,369,929, 2,772,162 and 2,895,826, Japanese Patent Application (OPI) Nos. 112038/75, 109630/78 and 163537/80, etc. Although the heat fastness of cyan images formed from these 2,5-diacylaminophenol type cyan couplers is improved, their color forming property is poor, cyan images formed therefrom are sensitive to light fading and yellow stain is apt to occur due to irradiation or the unreacted cyan couplers to light. Also, further improvement in heat fastness is required.
1-Hydroxy-2-naphthamide type cyan couplers are generally not satisfactory with regard to both light fading and dark fading.
Further, 1-hydro
REFERENCES:
patent: 2269158 (1942-01-01), Martinez
patent: 2272191 (1942-02-01), Fierke
patent: 4120725 (1978-10-01), Nakazyo et al.
patent: 4201589 (1980-05-01), Sakaguchi et al.
patent: 4203716 (1980-05-01), Chen
patent: 4239851 (1980-12-01), Aoki et al.
patent: 4278757 (1981-07-01), Mukunoki et al.
patent: 4368258 (1983-01-01), Fujiwhara et al.
patent: 4710456 (1987-12-01), Naoi et al.
patent: 4801521 (1989-01-01), Ohki et al.
patent: 4857449 (1989-08-01), Ogawa et al.
Furusawa Genichi
Hirano Tsumoru
Sakai Minoru
Takahashi Osamu
Baxter Janet C.
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
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