Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1987-04-28
1988-05-24
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430506, 430549, G03C 726, G03C 718
Patent
active
047465999
ABSTRACT:
The present invention relates to silver halide color photosensitive materials having improved tone and color reproductions. According to the present invention, there is provided a silver halide color photosensitive material wherein a coupler having the following general formula (I) is contained in a green-sensitive material and wherein a cyan gradation added to a specific image of a region in which a yellow and/or magenta image density obtained by color development exceeds 0.7, so as to increase cyan image gradation in the specific image region independently of the cyan density in a cyan coloring red-sensitive layer and as the yellow and/or magenta image density in the specific image region increases. Formula (I): ##STR1## wherein R.sub.11 represents a hydrogen atom or a substituent, X represents a hydrogen atom or a group which can be released upon a coupling reaction with an oxidized product of an aromatic primary amine developing agent, and Za, Zb and Zc each represents a methine, substituted methine, .dbd.N-- or --NH-- group; one of the Za-Zb bond and Zb-Zc bond is a double bond and the other is a single bond; when Zb-Zc is a carbon-to-carbon double bond, it may compose a part of a condensed aromatic bond; R.sub.11 or X may form a higher polymer including a dimer or more; and when Za, Zb or Zc is the substituted methine, a higher polymer including a dimer or more may be formed through the substituted methine.
REFERENCES:
patent: 4273861 (1981-06-01), Shiba et al.
patent: 4639415 (1987-01-01), Kaneko et al.
patent: 4707436 (1987-11-01), Sasaki
Deguchi Naoyasu
Ohki Nobutaka
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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