摘要:
A process for improving adhesion between photographic layers of a photographic element comprising a support having provided thereon at least(1) a first photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group and(2) a second photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group which compound is different from the high molecular weight compound of said first layer,which process comprises coating from 2 to 20 ml/m.sup.2 of a solution containing a polyisocyanate compound having at least two isocyanate groups on the first photographic layer, drying said solution, and then coating the second photographic layer.
摘要翻译:一种用于改善照相材料的照相层之间的附着力的方法,其包括至少提供有(1)包含具有能够与异氰酸酯基团反应的官能团的高分子量化合物的第一照相层和(2)第二 照相层包含具有能够与化合物与所述第一层的高分子量化合物不同的异氰酸酯基反应的官能团的高分子量化合物,该方法包括将2至20ml / m 2的含有 在第一照相层上具有至少两个异氰酸酯基团的多异氰酸酯化合物,干燥所述溶液,然后涂布第二照相层。
摘要:
This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety comprising a 1,3-sulfur-nitrogen group, said 1,3-sulfur-nitrogen group (a) being capable of undergoing cleavage in the presence of silver ion and/or soluble silver complex, and (b) possessing an amide substituent on the carbon atom in the 2-position that undergoes an intramolecularly accelerated cleavage reaction following the cleavage of said 1,3-sulfur-nitrogen group, which moiety maintains said precursor in its colorless form at least until the 1,3-sulfur-nitrogen group undergoes said cleavage. In a further embodiment, the cleavage of the amide substituent following the cleavage of the 1,3-sulfur-nitrogen group is used to provide an imagewise distribution of a photographically useful reagent, which reagent may be, for example, a photographically active reagent.
摘要:
This invention relates to photographic processes and products for forming an image in dye from a colorless precursor of a preformed image dye which is substituted with a moiety containing a thiazolidinyl group, said thiazolidinyl group (a) being capable of undergoing cleavage imagewise in the presence of an imagewise distribution of silver ion and/or soluble silver complex and (b) possessing a substituent on the carbon atom in the 2-position which upon cleavage of said thiazolidinyl group, undergoes a .beta.-elimination reaction followed by an intramolecularly accelerated nucleophilic displacement reaction, which moiety maintains the precursor in its colorless form at least until said thiazolidinyl group undergoes said cleavage. In a further embodiment, this sequence of reactions is used to release an imagewise distribution of a photographically useful reagent which reagent may be, for example, a photographically active reagent.
摘要:
A method for forming a negative image comprising imagewise exposing a photographic material to provide exposed areas and unexposed areas, said material comprising, on a support, (1) an emulsion layer containing a light-sensitive silver halide, (2) unsensitized silver halide metallic salt grains which are more soluble in a developer than the light sensitive silver halide, and (3) nuclei for physical development, processing said material in the presence of a reducing agent and a solvent for said grains with said developer containing a substance which renders said grains less soluble by adsorbing thereto, said developer rendering said grains in said exposed areas and not in said unexposed areas soluble in said solvent, whereby metal ions are released and deposited on said nuclei.
摘要:
Process and material for the production and use of pressure sensitive and for heat sensitive and/or solvent sensitive decalcomanias, formed according to the principles of the silver complex diffusion transfer process.
摘要:
Light-sensitive palladium compounds are reduced on exposure to actinic light to nuclei which are catalytic centers for the deposition of metal from a physical developer. The palladium nuclei are catalysts for deposition of metal from stable physical developers, which developers do not respond to catalysts used in the physical development of silver latent images.
摘要:
Development solubilization photographic processes are disclosed wherein silver halide is preferentially dissolved from developing silver halide grains. Processing compositions employed in such processes include at least one silver halide complexing agent capable of forming a soluble silver complex, and preferably contains a second silver halide complexing agent capable of forming a less soluble silver complex. The dissolved silver halide may be transferred to another stratum to provide a visible image, preferably a silver transfer image which is a negative image of the photographed subject matter.
摘要:
Photographic elements and processes feature photoconductive, substantially silver halide free, inorganic particles and a photoreactive sulfur compound which will react with the inorganic particles upon exposure to light to form sulfur containing sites for physical development. Subsequent to exposure, the element is physically developed to produce a negative of the original.