摘要:
A photographic element having a silver halide emulsion spectrally sensitized to blue light by a dye of formula (I) to have a maximum blue sensitivity at less than 485 nm. The dye allows the element to have good color reproduction while still providing good speed response despite the shorter blue sensitivity. Formula (I) is: ##STR1## wherein: X and X' each independently represent the atoms necessary to complete a thiazole, benzothiazole, naphthothiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, naphthoselenazole, imidazole, benzimidazole, or naphtho-imidazole, and X may be further substituted and X' substituted or unsubstituted;Z.sub.1 represents a pyrrole, furan or thiophene containing group;R.sub.1 and R.sub.2 each independently represent substituted or unsubstituted hydrocarbon containing 1 to 10 carbon atoms; andA represents a counter-ion as needed to balance a charge of the molecule.
摘要翻译:具有通过式(I)的染料对蓝光光谱感光的卤化银乳剂的照相元件在小于485nm处具有最大的蓝色灵敏度。 染料允许元件具有良好的色彩再现性,同时仍然提供良好的速度响应,尽管蓝色灵敏度较低。 式(I)是其中:X和X'各自独立地表示完成噻唑,苯并噻唑,萘并噻唑,恶唑,苯并恶唑,萘并恶唑,硒唑,苯并硒唑,萘并噻唑,咪唑,苯并咪唑或萘并咪唑所必需的原子,X 可以进一步被取代,X'取代或未取代; Z1代表含吡咯,呋喃或噻吩的基团; R 1和R 2各自独立地表示取代或未取代的含有1至10个碳原子的烃; 而A代表平衡电荷分子所需的抗衡离子。
摘要:
A method of sensitizing a silver halide emulsion comprises the steps of:a) forming a co-dispersion of a first sensitizing dye and a second sensitizing dye in an aqueous medium, wherein the peak absorptance of the second dye is at least 10 nm different from the peak absorptance of the first dye, and wherein the ratio of the first dye to the second dye is from about 0.1 to 20; andb) incorporating the resulting co-dispersion in a silver halide emulsion.
摘要:
A silver halide photographic element comprises a silver halide emulsion layer sensitized with a sensitizing dye of Formula I: ##STR1## wherein each of X.sub.1 and X.sub.2 is an oxygen atom, a sulfur atom, or a selenium atom, with the proviso that one of X.sub.1 and X.sub.2 is an oxygen atom and the other is a sulfur or selenium atom; V.sub.1 and V.sub.2 together or V.sub.2 and V.sub.3 together represent the atoms necessary to complete a fused benzene ring; each of V.sub.4 and V.sub.5 is independently a hydrogen or halogen atom, or an alkyl, alkoxy or aryl group; R.sub.1 is an acid substituted alkyl group; R.sub.2 is a 2-sulfoethyl group; and M is a counterion as necessary to balance the charge.
摘要:
A silver halide photographic element, and a method of making such an element, comprising a tabular grain silver halide emulsion containing at least one green spectral sensitizing dye of formula I, and at least one green spectral sensitizing dye of formula II: wherein R1 and R2 may be the same or different and are selected from substituted or unsubstituted C1 or C2 alkyl, substituted or unsubstituted C1 or C2 alkoxy, halogen, substituted or unsubstituted amido, or carbamoyl or substituted or unsubstituted aryl, provided that R1 and R2 are not both aryl, and the benzo back rings may optionally be further substituted; X3 is a substituted or unsubstituted C1 to C3 alkyl or alkenyl; X1 and X2 are acid or acid salt substituted C1 to C6 alkyl or alkenyl which may be further substituted or unsubstituted; M+ is a positive ion as required to balance the charge; where R3 and R4 may be the same or different and represent substituted or unsubstituted alkyl or alkenyl of 1 to 4 carbon atoms; R5 and R6 may be the same or different and both represent strong electron withdrawing groups; R8 and R9 are independently hydrogen, halogen, or a substituted or unsubstituted methyl or ethyl, or a strong electron withdrawing group; X4 and X5 are substituted or unsubstituted C1 to C6 alkyl or alkenyl at least one of which has an acid or acid salt substituent; N+ is a positive ion as needed to balance the charge.
摘要翻译:卤化银照相元件和制造这种元件的方法,其包含含有至少一种式I的绿色光谱增感染料的片状粒状卤化银乳剂和至少一种式II的绿色光谱增感染料:其中R1和R2 可以相同或不同,并且选自取代或未取代的C1或C2烷基,取代或未取代的C1或C2烷氧基,卤素,取代或未取代的酰氨基或氨基甲酰基或取代或未取代的芳基,条件是R1和R2不同时为芳基 苯并环后环可以任选被进一步取代; X 3是取代或未取代的C 1至C 3烷基或烯基; X 1和X 2是酸或酸盐取代的C 1至C 6烷基或可被进一步取代或未取代的链烯基; M + 平衡电荷所需的正离子;其中R 3和R 4可以相同或不同并且表示取代或未取代的1至4个碳原子的烷基或烯基; R 5和R 6可以 相同或不同,均表示强吸电子基团; R8和R9独立地为氢,卤素或取代或未取代的甲基或乙基或强吸电子基团; X4和X5为取代或未取代的C1至C6烷基或 烯基,其中至少一个具有酸或酸盐取代基; N +是平衡电荷所需的正离子。