Radiation imagery chemistry: process – composition – or product th – Nonradiation sensitive image processing compositions or... – Developer
Patent
1987-12-11
1990-03-06
Martin, Roland E.
Radiation imagery chemistry: process, composition, or product th
Nonradiation sensitive image processing compositions or...
Developer
430434, 430435, 430484, 430486, 430487, 430490, 430491, G03C 524
Patent
active
049065548
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a color developing solution for a light-sensitive silver halide photographic material and a processing method of a light-sensitive silver halide photographic material using the same, more particularly it relates to a color developing solution for a light-sensitive silver halide photographic material having a silver halide emulsion layer containing silver halide grains substantially comprised of silver chloride and excellent in the photographic performances for fog and maximum density and a processing method of a light-sensitive silver halide photographic material using the same.
This invention further relates to a processing solution and a processing method in which photographic performances are usually maintained stably even when quick processing is carried out. More specifically, it relates to a quick processing method which causes less decomposition of a processing solution by oxidation and generates less tar.
BACKGROUND ART
Generally, in the method of forming dye images by processing light-sensitive silver halide color photographic materials, the dye images are formed, after imagewise exposure, by reacting an oxidized p-phenylenediamine type color developing agent with a dye image-forming coupler. In such a method, a color reproduction method according to the subtractive color process is usually used to form dye images of cyan, magenta and yellow respectively corresponding to red, green and blue colors. Recent years, in the formation of such dye images, it is generally practiced to carry out a high temperature developing and simplify processing steps in order to achieve a shortened developing processing time. In particular, in order to achieve the shortened developing processing time, it becomes very important to increase the developing speed in color development. The developing speed in color development is governed from two approaches. One of them is a light-sensitive silver halide color photographic material, and the other of them is a color developing solution. In the former, the composition of the grains in a silver halide emulsion to be used may give great influence to the developing speed, and, in the latter, the conditions or composition of the color developing solution may give great influence to the developing speed.
Light-sensitive silver halide color photographic materials wherein a light-sensitive silver halide emulsion is substantially comprised of silver chloride (hereinafter referred to as light-sensitive silver chloride color photographic materials) can be rapidly developed as compared with conventional light-sensitive color photographic materials comprising a silver halide emulsion containing silver bromides or silver iodides such as silver chlorobromide, silver chloroiodobromide and silver iodobromide, and moreover can be free from accumulation in the color developing solution, of bromide ions or iodide ions which are susceptible to suppress development reactions. Thus, they are very useful as light-sensitive materials for a rapid processing. The present inventors have made various studies by using light-sensitive silver chloride color photographic materials suited for used in the rapid processing, and, as a result, find that the materials have the following disadvantages.
That is, as a first instance, hydroxylamine conventionally used as one of preservatives tends to act as a developing agent for the silver chloride so that the silver development may proceed, to lower color density of color images finally obtained.
As a second instance, sulfite conventionally used as other preservatives tends to act as a dissolving agent for the silver chloride so that the physical development due to a color developing agent may rapidly proceed, to lose the balance between the silver development reaction and the coupling reaction, in other words, the silver development may overly precede and the coupling reaction may delay, whereby the color density is lowered.
To solve the above first and second problems, the present inventors have made various studies.
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WO 87/04534, "Photographic Color . . . ", Vincent et al., 7/30/87.
International Search Report for International Application No. PCT/JP87/00243 (English translation), 3 pages.
Chino Shigeo
Ishikawa Masao
Kobayashi Kazuhiro
Koboshi Shigeharu
Ohbayashi Keiji
Doody Patrick A.
Konishiroku Photo Industry Co,., Ltd.
Martin Roland E.
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