摘要:
A single-part colour developing concentrate with a pH greater than or equal to 7 which contains at least 0.02 mol of a colour developer substance and at least 0.015 mol of an antioxidant per litre, characterised in that the concentrate contains 0.05 to 35 g per litre of a wetting agent soluble in water in this amount, is distinguished by very good stability in storage at low temperatures and the discharge behaviour from the concentrate bottle is considerably improved and soiling of the processing equipment is avoided. Furthermore, the optical brightener precipitation occurring in practice in the bleach fixing bath is also prevented.
摘要:
A color developing composition is stable in the presence of calcium ion because of the presence of a specific polyphosphonic acid sequestering agent. The composition also comprises a color developing agent in free base form and an antioxidant for the color developing agent. The calcium ion sequestering agent is morpholinomethanediphosphonic acid or a salt thereof. This sequestering agent can be used alone to control calcium ion precipitates, or in combination with a polyaminopolyphonic acid or salt thereof. The composition can be used to provide images in various color photographic silver halide materials.
摘要:
A black-and-white silver halide developer composition has been disclosed comprising, besides one or more developing agent(s), agent(s) preventing oxidation thereof and agent(s) providing pH buffering, at least one silver complexing agent, characterized in that said silver complexing agent has a silver complexing stability ratio of at least 70% and, besides said silver complexing agent, at least one agent preventing silver dissolution characterized in that said agent preventing silver dissolution, if present in an amount of 50 mg/l of developer, makes silver content of the developer decrease in an amount of more than 50% versus in the absence thereof, without loss in speed in an amount of more than 0.10 log Exposure after processing in said developer composition.
摘要:
A processing method of a silver halide photographic material comprising a support having on at least one side of the support hydrophilic colloid layers including a silver halide emulsion layer is disclosed, in which the silver halide emulsion layer contains tabular silver halide grains having an average chloride content of 20 mol % or more and an aspect ratio of 2 or more; and a coating weight ratio of silver to gelatin of said hydrophilic colloid layers is 0.6 or more; the photographic material being developed in the presence of a compound represented by the following formula (I) or (II): ##STR1##
摘要:
A processing solution for processing an exposed silver halide photographic light-sensitive material comprises a compound represented by the following formula (A): ##STR1## wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4 each represent --COOM.sub.1, --OH, --PO.sub.3 M.sub.1 M.sub.2 or --CONH.sub.2 in which M.sub.1 and M.sub.2 each represent a hydrogen ion, an alkali metal ion or another cation; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent a hydrogen atom, a lower alkyl group or a hydroxyl group; n.sub.1, n.sub.2, n.sub.3 and n.sub.4 each represent an integer of 0, 1 or 2, provided that none of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen atoms when n.sub.1 +n.sub.2 =1 and n.sub.3 +n.sub.4 =1; and X represents a substituted or unsubstituted alkylene group having 2 to 6 carbon atoms or --(B.sub.1 O)m-B.sub.2 -- in which B.sub.1 and B.sub.2 each represent a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, and m is an integer of from 1 to 4.
摘要:
A redox-amplification solution comprising hydrogen peroxide, or a substance capable of releasing hydrogen peroxide, or reducing agent, such as a color developing agent, and in combination three or more sequestering agents for complexing with a transition metal ion to inhibit catalysis of impurities emanating from a photographic film coating and enhance the stability of the solution; a method of photographic color processing including a step using the redox-amplification solution and its use therefor.
摘要:
A novel inorganic composition for developing silver halide photographic products has improved stability in air. The composition comprises at least one oxidizable metallic ion, ethylenediamine tetraacetic acid and at least one additional complexing agent of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are each independently a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, a hydroxyl group, or a hydroxyalkyl group, R.sup.3 is --COOM wherein M is hydrogen or a counter-ion such as lithium, sodium or potassium, or --CONR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are each independently a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, and n, p and q are independently 1, 2 or 3.
摘要:
A method for processing a black-and-white silver halide photographic light-sensitive material comprising the steps of(1) developing an imagewise exposed black-and-white silver halide photographic light-sensitive material with a developing solution in the presence of a complex forming compound,(2) fixing with a fixing solution,(3) washing or stabilizing with water or a stabilizing solution, respectively, and(4) drying the washed or stabilized light-sensitive material,wherein the light-sensitive material comprises a support and at least one silver halide emulsion layer and optionally one or more non-light-sensitive hydrophilic colloid layers provided on a first side of the support, and a layer provided on the second side opposite to the fist side of the support, and at least one of the silver halide emulsion layer and the non-light sensitive hydrophilic layer adjacent to the silver halide emulsion layer provided on the first side of the support contains a hydrazine compound, at least one of the silver halide emulsion layer and the non-light sensitive hydrophilic layers provided on the first side of the support contains a redox compound capable of releasing a development inhibitor upon oxidation reaction, the layer provided on the second surface of the support contains a sparingly water-soluble metal compound capable of releasing a base upon reaction with the complex forming compound.
摘要:
A sequestering agent useful in chelation of calcium and/or magnesium ions in aqueous solution comprises by weight from about 2 percent to about 20 percent iminodiacetic acid or a water-soluble salt thereof and from about 98 percent to about 80 percent of nitrilotriacetic acid or a water-soluble salt thereof.
摘要:
Composition for processing a silver halide photographic lightsensitive element containing ethylene-bis( Beta -oxyethylamine) tetraacetic acid or its alkali salt. The compound has a calcium ion-chelating or masking ability superior to that of EDTA.