摘要:
The invention provides a color negative photographic element comprising a transparent support bearing at least two light sensitive silver halide emulsion layers sensitive to blue light, at least two such layers sensitive to green light, and at least two such layers sensitive to red light, wherein at least one of the red sensitive emulsion layers is spectrally sensitized with both a particular first carbocyanine dye (I) which contains both a thiazole and an oxazole ring and a particular second carbocyanine dye (II) which contains two thiazole rings. The element of the invention is advantageous in allowing an increased efficiency of silver removal during the bleaching step of the development process.
摘要:
A silver halide photographic material for mammography comprising a support having on one side thereof at least two light-sensitive emulsion layers different in sensitivity, in which the uppermost emulsion layer is less sensitive than the lower emulsion layer, the total silver content of all light-sensitive emulsion layers is from 2.0 to 5.5 g/m.sup.2, and the silver halide light-sensitive material exhibits an average contrast of from 3.6 to 4.8 and a sensitivity of from 0.03 to 0.07 lux.sec. when developed as specified; and an X-ray photographic image forming system for mammography comprising (A) a single-sided silver halide light-sensitive material and (B) an X-ray intensifying screen having a layer substantially comprising a Gd.sub.2 O.sub.2 S:Tb fluorescence substance, in which the screen has an emission luminance of 150 to 250 and a contrast transfer function of from 0.40 to 1.00 at a spatial frequency of 5 line pairs/mm, the silver halide light-sensitive material has an average contrast of 3.6 to 4.8, and the X-ray photographic image forming system has a system sensitivity of 5.5 to 10 mR.
摘要翻译:一种用于乳房X线照相术的卤化银照相材料,包括一个支撑体,其一侧上具有不同灵敏度的至少两个感光乳剂层,其中最上层乳剂层比下乳剂层敏感性低, 敏感乳剂层为2.0〜5.5g / m 2,卤化银感光材料的平均对比度为3.6〜4.8,灵敏度为0.03〜0.07lux.sec。 按规定开发; 和用于乳房摄影的X射线摄影图像形成系统,包括(A)单面卤化银感光材料和(B)具有基本上包含Gd 2 O 2 S:Tb荧光物质的层的X射线增强屏,其中 屏幕的发光亮度为150〜250,对比度传递函数为0.40〜1.00,空间频率为5线对/ mm,卤化银感光材料的平均对比度为3.6〜4.8, ray摄影成像系统的系统灵敏度为5.5〜10mR。
摘要:
A method is disclosed of hardener-free processing a forehardened silver halide photographic material comprising a film support and on one or both sides thereof at least one silver halide emulsion layer characterized in that (1) each silver halide emulsion layer comprises spectrally sensitized cubic silver chloride or silver bromochloride grains having not more than 25 mole % of bromide in a total amount of coated silver expressed as the equivalent amount of silver nitrate in the range of from 2.5 to 4 g/m.sup.2 ; (2) the forehardened material has a water absorption of less than 4 grams per gram of gelatin, wherein said water absorption has been determined by making the difference by weight of the material when dry and when having been dipped in demineralized water of 25.degree. C. during 3 minutes followed by squeezing off the superficial water; (3) hardener-free processing includes development with a developing solution comprising thiocyanate ions in amounts from 10.sup.-3 up to 10.sup.-2 molar.
摘要:
A silver halide photographic light-sensitive material is disclosed, comprising tabular grains having an average aspect ratio of diameter to thickness of 2 or more, having an average overall iodide content of 2 mol % or less, and having a surface phase containing 3 to 20 mol % iodide on the average. The emulsion is spectrally sensitized by adding a sensitizing dye represented by the following formula [I] or [II], ##STR1##
摘要:
The present invention provides a silver halide color photographic material having an excellent color reproducibility and preservability. A novel silver halide color photographic material comprising a support having providing thereon at least one blue-sensitive silver halide emulsion layer containing a yellow color coupler, at least one green-sensitive silver halide emulsion layer containing a magenta color coupler, at least one red-sensitive silver halide emulsion layer containing a cyan color coupler, and at least one silver halide emulsion layer which provides said at least one red-sensitive silver halide emulsion layer with an interlayer effect is described, wherein said at least one silver halide emulsion layer which provides an interlayer effect is spectrally sensitized with a sensitizing dye represented by the following formula (I) and comprises a development inhibitor-releasing compound represented by the following formula (II): ##STR1##
摘要:
The invention provides a method of forming a spectrally sensitized emulsion comprising providing a silver bromoiodide emulsion, adding sensitizing dye ##STR1## X.sup.+ is a cation other than N-alkyl pyridinium, adding an N-alkyl pyridinium salt, and completing the heat cycle for sensitization.
摘要:
A silver halide photographic material spectral-sensitized with a combination of compounds represented by the following formulas (I), (II) and (III) or (IV): ##STR1## wherein R.sub.11, R.sub.12, R.sub.21, R.sub.22, R.sub.31, R.sub.32, R.sub.41 and R.sub.42 each represents an alkyl group; R.sub.33 represents a hydrogen atom, an alkyl group or an aryl group; Z.sub.11 and Z.sub.21 each represents an atomic group necessary for forming a benzene ring; Z.sub.12 represents an atomic group necessary for forming a benzthiazole or benzoselenazole nucleus; Z.sub.22 represents an atomic group necessary for forming a benzoxazole or naphthoxazole nucleus; Z.sub.31, Z.sub.32 and Z.sub.41 each represents an atomic group necessary for forming a five-membered or six-membered nitrogen-containing heterocyclic ring; X.sub.11, X.sub.21 and X.sub.31 each represents a charge-neutralizing counter ion; and m, n and p each represents 0 or 1.
摘要:
A photographic recording material having a photosensitive silver halide emulsion layer which is spectrally sensitized with a sensitizing dye of one of the formulae I and II ##STR1## in which R.sup.1, R.sup.2 denote sulfoalkyl;R.sup.3 denotes alkyl;R.sup.4 denotes H, F, Cl, --CN, alkoxycarbonyl, carbamoyl;R.sup.5 denotes Cl, --CN;M.sup..sym. denotes a counter ion (cation) which is optionally necessary to balance the charge exhibits a high degree of sensitivity which is stable under warm, humid conditions.
摘要翻译:一种具有感光卤化银乳剂层的照相记录材料,其用式I和II(I)之一的增感染料进行光谱增感,其中R 1,R 2表示磺基烷基; R3表示烷基; R 4表示H,F,Cl,-CN,烷氧基羰基,氨基甲酰基; R5表示Cl,-CN; M(+)表示抗衡离子(阳离子),其任选地必须平衡电荷表现出在温暖,潮湿条件下稳定的高灵敏度。
摘要:
A silver halide photographic material is disclosed which comprises at least one of methine compounds represented by the following formula (I) ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkyl group; V.sub.1, V.sub.2, V.sub.3, V.sub.4, V.sub.5, V.sub.6 and V.sub.7 are the same or different and each represents a hydrogen atom or a substituent; X.sub.1 represents a halogen atom; L.sub.1, L.sub.2 and L.sub.3 are the same or different and each represents a substituted or unsubstituted methine group; E represents an auxochrome; n represents a number of 0 or more; M.sub.1 represents an ion for neutralizing charge; and m.sub.1 represents a number of 0 or more necessary for neutralizing the molecular charge.
摘要:
A silver halide photographic material is descloosed, comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide emulsion layer contains at least 1.times.10.sup.-4 mol of a compound represented by formula (I) per mol of silver halide and from 1.times.10.sup.-3 to 1.times.10.sup.-1 mol of compound represented by formula (II) per mol of the compound of formula (I) and the iodine content of the silver halide emulsion is 1 mol % or less: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, X.sup..crclbar. and n are defined in the specification. The photographic material is highly sensitive, can be processed rapidly, and does not fatigue the developer, yet it contains only a small percentage of iodine, if any. The photographic material is useful in photographic films including X-ray films.