Radiation imagery chemistry: process – composition – or product th – Color imaging process – Laser or radiation exposure other than visible light
Patent
1994-09-15
1998-05-05
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Laser or radiation exposure other than visible light
430388, 430389, 430558, G03C 7407
Patent
active
057472270
ABSTRACT:
A method of forming colored images is disclosed. A silver halide color photographic photosensitive material which contains at least one yellow coupler represented by formula (I) in a yellow color forming silver halide emulsion layer which is established on a support is exposed using a scanning exposure system in which the exposure time per picture element is shorter than 10.sup.-4 seconds and then subjected to color development processing: ##STR1## wherein A represents ##STR2## X represents an organic group which is required to form, along with the nitrogen atom, a nitrogen containing heterocyclic ring, Y represents an aromatic group or a heterocyclic group, and Z represents a group which is eliminated on reaction of the coupler represented by formula (I) with an oxidation product of a developing agent.
The method provides high quality hard copy both cheaply and quickly by means of a scanning exposure using high density light such as lasers for example. It also provides a method of forming colored images which is improved in respect of the variation in photographic performance with respect to fluctuations in development processing.
REFERENCES:
patent: 4619892 (1986-10-01), Simpson et al.
patent: 5057405 (1991-10-01), Shiba et al.
patent: 5213958 (1993-05-01), Motoki et al.
Fuji Photo Film Co. , Ltd.
Le Hoa Van
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