摘要:
Yellow DIR couplers corresponding to formula I below are capable of producing remarkably powerful inhibitory effects on remote layers while their action on the layer containing them is comparatively slight: ##STR1## In the above formula, R.sup.1 represents straight-chained or branched alkyl, optionally substituted aryl or --NR.sup.5 R.sup.6,R.sup.2, R.sup.5 represent H or alkyl with 1 or 2 carbon atoms,R.sup.3, R.sup.6 represent alkyl with 1 to 18 carbon atoms or optionally substituted aryl,R.sup.4 represents alkyl with 5 to 12 carbon atoms, andFu represents a substituted or unsubstituted furyl group.
摘要:
Remarkably high inter-image and edge effects are obtained when DIR-Couplers corresponding to Formula I are added to multilayered color photographic recording materials, in particular to green sensitive or red sensitive layers. The sharpness and color reproduction may thereby be improved. ##STR1## R.sup.1 and R.sup.2 denote alkyl or an aromatic group, R.sup.3 denotes H, alkyl or acylamino,R.sup.4 denotes H or alkylR.sup.5 denotes alkyl, alkinyl, aryl, acyloxy, carbamoyl or a cyclic imido group andn has the value 0 or 1and the total number of carbon atoms in R.sup.3, R.sup.4 and R.sup.5 is greater than 3 but not greater than 11.
摘要:
High interimage effects and edge effects can be obtained in multilayer color photographic recording materials if yellow DIR couplers of formula I are used therein, particularly if used in green sensitized or red sensitized layers. Sharpness and color reproduction are substantially improved. ##STR1## wherein R.sup.1 denotes a straight chained or branched alkyl group with up to 18 carbon atoms;R.sup.2, R.sup.3 denote identical or different alkyl groups with up to 18 carbon atoms;R.sup.4 denotes H, halogen, alkyl with up to 6 carbon atoms or alkoxy with up to 6 carbon atoms;R.sup.5 denotes H or alkyl with up to 9 carbon atoms; andR.sup.6 denotes a saturated or unsaturated aliphatic group with up to 10 carbon atoms,the total number of carbon atoms in R.sup.5 and R.sup.6 being not less than 5 and not greater than 10.
摘要翻译:如果在其中使用式I的黄色DIR成色剂,特别是如果用于绿色敏化或红色敏化层,则可以在多层彩色照相记录材料中获得高的图像效果和边缘效果。 显着提高了清晰度和色彩再现性。 (I)其中R 1表示具有至多18个碳原子的直链或支链烷基; R2,R3表示具有至多18个碳原子的相同或不同的烷基; R 4表示H,卤素,具有至多6个碳原子的烷基或具有至多6个碳原子的烷氧基; R5表示H或最多9个碳原子的烷基; R6表示具有至多10个碳原子的饱和或不饱和脂族基团,R5和R6中碳原子总数不小于5且不大于10。
摘要:
A color photographic recording material comprises in a yellow filter layer at least one dye of one of the formulae I and II ##STR1## in which R.sup.1, R.sup.3 and R.sup.5 (mutually independently) mean alkyl, cycloalkyl or aryl; R.sup.2 and R.sup.4 (mutually independently) mean hydrogen or alkyl; R.sup.21 means a residue as R.sup.1 ; R.sup.22 means a residue as R.sup.2 ; R.sup.23 means a residue as R.sup.1 ; provided that in formula I none of the residues R.sup.1 to R.sup.5 contains an alkyl chain of more than 3 carbon atoms. The dyes exhibit suitable absorption as yellow filter dyes and are completely decolored during processing.
摘要:
A black & white paper with variable gradation containing a silver chloride-bromide emulsion, which is divided into at least three portions, one of which is sensitised with a blue sensitiser and two further portions are sensitised both with differing quantities of blue sensitiser and with differing quantities of a green sensitiser, wherein the blue sensitiser is of the formula (I) and the green sensitiser is of the formula (II) ##STR1## in which R.sub.1 to R.sub.8, X.sup.(-) and m have the meaning stated in the specification, is distinguished by an extended gradation range.
摘要:
Photographic materials containing in at least one photographic layer as antihalation- or filter-dyes mono-, tri- or pentamethineoxonoles of 1-sulfolanyl pyrazolones, which dyes can be easily decolorized and washed out on treatment of the photographic material in photographic processing.
摘要:
Oxonol dyes of the formula I ##STR1## in which R.sub.1, R.sub.2 mean an optionally substituted furyl or thienyl group,R.sub.3, R.sub.4 mean an aryl group substituted with at least two sulpho groups,L means CH or CR.sub.5,R.sub.5 means C.sub.1 -C.sub.4 alkyl andn means 0, 1 or 2,give rise in a photographic material to an improvement in sharpness.
摘要:
Pyrimidone or thiopyrimidone benzothiazole monomethine cyanines are valuable spectral sensitizers for sensitizing negative silver halide emulsions in the blue region of the spectrum. In contrast to other known monomethine cyanines they have little or no desensitizing effect in the range of inherent sensitivity.