摘要:
Process for the preparation of silver images by imagewise exposure of a photographic material comprising at least one light-sensitive silver halide emulsion layer and treatment of the material with a developer composition, wherein the improvement comprises the development is carried out in the presence of 3-mercapto-5-(2-furyl)-1,2,4-triazole. The 3-mercapto-5-(2-furyl)-1,2,4-triazole decreases the fog during development, and when this is the first development in a black-and-white or color reversal process, increases the reversal silver or color density.
摘要:
Compounds of the formula ##STR1## wherein the substituents have the meaning indicated in the specification are suitable as latent image stabilizer in silver halide materials.
摘要:
A color photographic material comprising at least one light-sensitive silver halide emulsion layer having preferably a non-diffusing color coupler associated to it and at least one non-lightsensitive binder layer containing a colloidal silver dispersion provides less contact fog and a better color reproduction if the non-lightsensitive binder layer containing the colloidal silver dispersion contains also a soluble iodide, particularly sodium, potassium or ammonium iodide. Alternatively the soluble iodide may also be contained in a non-lightsensitive binder layer adjacent that binder layer which contains the silver dispersion.
摘要:
A color photographic silver halide material having at least two blue-sensitive, yellow coupler containing silver halide emulsion layers, at least two green-sensitive, magenta coupler containing silver halide emulsion layers and at least two red-sensitive, cyan coupler containing silver halide emulsion layers together with conventional interlayers and protective layers, wherein photosensitive layers of identical color sensitivity differ with regard to the photographic sensitivity thereof and the more highly sensitive layers are arranged further away from the support than the less sensitive layers of identical color sensitivity, which material contains, in a layer which is arranged further from the support than the most highly sensitive, blue-sensitive layer, both at least one yellow coupler and at least one magenta or cyan coupler, is distinguished by improved grain and sensitivity combined with very good color reproduction.
摘要:
The photographic silver halide recording material contains particles of a hydroxyalkyl-alkyl cellulose dicarboxylic acid semiester having a particle size of from 0.5 to 8 .mu.m and a particle size distribution of up to .+-.2 .mu.m dispersed in a hydrophilic colloid in at least one of its outermost layers.
摘要:
New dyes corresponding to the following general formula: ##STR1## wherein the substituents are as defined in the specification, are suitable for use in photographic recording materials.
摘要:
As quick-acting hardeners for layers which contain protein, in particular gelatin layers for photographic purposes carbamoyl oxypyridinium salts are used.
摘要:
A colour photographic material in which a package of layers is provided which consists, in the stated sequence, of (a) a silver halide-free layer containing colour coupler, (b) a layer containing silver halide and (c) a silver halide-free layer containing colour coupler, wherein at least one of layers (a) and (c) consists to an extent of at least 20 vol. % of a synthetic polymer, is distinguished by an improved grain/sensitivity ratio.
摘要:
A color negative film having a support, at least one blue-sensitive, yellow-coupling silver halide emulsion layer, at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, wherein at least one of the color-sensitive silver halide emulsion layers consists of at least two sub-layers of differing photographic sensitivity, the coupler application rate in the most highly sensitive layer of the color sensitive silver halide emulsion layer, of which there is at least one, consisting of at least two sub-layers of differing photographic sensitivity, is no more than 0.05 mmol/m.sup.2 and a development-promoting compound or a compound from the range of ETAR couplers and ACR couplers is used in the same or an adjacent layer, which compound, on reaction with the developer oxidation product (DOP), releases a development-promoting compound from the range of electron transfer agents (ETAR) or of binding groups having an affinity for silver (ACR), is distinguished by an improved grain/sensitivity ratio.
摘要翻译:具有支持体的至少一种蓝色敏感的黄色偶合卤化银乳剂层,至少一种绿色敏感的品红色偶联卤化银乳剂层和至少一种红色敏感的青色偶联卤化银的彩色底片 乳液层,其中至少一种感色卤化银乳剂层由不同感光度的至少两个子层组成,其中感光卤化银乳剂层的最高敏感层中的成色剂施加率为 至少有一个由不同照相感光度的至少两个子层组成,不超过0.05mmol / m 2,同时使用来自ETAR成色剂和ACR成色剂范围的显影促进化合物或化合物 或相邻层,该化合物与显影剂氧化产物(DOP)反应,从电子转移剂(ETAR)或结合基团的范围ha释放显影促进化合物 提高对银(ACR)的亲和力,其特征在于改善的颗粒/灵敏度比。
摘要:
A photographic recording material comprising a carrier and at least one photosensitive silver halide emulsion layer, a non-photosensitive layer and optional conventional intermediate and protective layers, characterised in that the photographic recording material (1) contains at least one silver halide emulsion layer having a silver iodide content .gtoreq.3 mol % and an average grain diameter .ltoreq.0.4 .mu.m, and (2), at least in one layer, contains a compound having the formula I ##STR1## in which R.sub.1, R.sub.2 and R.sub.3 denote hydrogen, an optionally substituted hydrocarbon radical, an optionally substituted alkylthio, alkyloxy or arylthio radical, an optionally substituted amino group, OH or halogen or R.sup.1 and R.sup.2 together denote the radical for completing a carbocyclic or heterocyclic ring,R.sub.4, R.sub.5 denote hydrogen, an optionally substituted alkyl or aryl radical, or an optionally substituted heterocyclic radical,R.sub.6, R.sub.7 denote hydrogen or a radical which can be split off in alkaline solution, andR.sub.8 denotes hydrogen, an optionally substituted alkyl or aryl radical, or an optionally substituted alkylthio radical.The material gives excellent inter-image and edge-effects and has improved sharpness and grain as compared with conventional materials.