摘要:
A silver halide photographic material for use in a bright room is disclosed comprising a support having thereon at least two silver halide emulsion layers, each of the emulsion layers having a different sensitivity and comprising silver chloride grains or silver chlorobromide grains having at least about 80 mol % silver chloride, each of the silver halide emulsions layers containing from about 1.times.10.sup.-7 mol to about 1.times.10.sup.-4 mol of a rhodium salt per mol of silver, wherein the sensitivity of the lower emulsion layer (the emulsion layer coated nearer to the support) is higher than the sensitivity of the upper emulsion layer (the emulsion layer coated farther from the support) and at least one of the silver halide emulsion layers or different hydrophilic colloid layers contains a hydrazine derivative and at least one of the silver halide emulsion layers of different hydrophilic colloid layers contains a dry compound having a .sup..lambda. max of from about 400 nm to about 550 nm.
摘要:
A method for forming an image is disclosed which comprises providing a photosensitive material comprising at least one light-sensitive layer and having a gamma value of not less than 10 and a capability of being handled under bright light, subjecting said light-sensitive layer image-wise exposure to light having substantially exclusive of wavelengths of 370 nm or shorter through originals, for example, a line original and a halftone original arranged in a superposed condition, followed by contrast development processing, whereby excellent quality of images, for example, letter images, can be obtained.
摘要:
A silver halide photographic material for a bright room and a process for producing the photographic material are disclosed, wherein the silver halide photographic material for a bright room comprises a support having thereon at least one silver halide emulsion layer containing silver chloride grains or silver chlorobromide grains containing at least 80 mol % silver chloride, at least one of said silver halide emulsion layer or another hydrophilic colloid layer(s) present containing a yellow dye making the silver halide photographic material substantially insensitive to visible light of 420 n.m. or more and an ultraviolet absorbent in an amount sufficient to reduce the specific sensitivity of the silver halide emulsion at 360 n.m. to 1/2 or lower than 1/2 thereof in the absence of the ultraviolet absorbent, and the .gamma. value of the silver halide photographic material being at least 10.
摘要:
A silver halide photographic material which has at least one silver halide emulsion layer comprising silver chloride or silver chlorobromide grains which has a bromide content of 5 mol % or less, and containing a rhodium salt in an amount of from 1.times.10.sup.-6 to 5.times.10.sup.-4 mole per mole of silver in said layer, and contains both a hydrazine derivative and a dye having an absorption peak in the wavelength region of from 400 nm to 550 nm in at least one of said emulsion layer another hydrophilic colloid layer, to thereby control the ratio of sensitivity at 360 nm to sensitivity at 400 nm (S.sub.360 /S.sub.400 ratio) to not less than 30, thereby achieving ultra-high contrast, high sensitivity, and a satisfactory aptitude for safelight.
摘要:
A silver halide photographic material which may be handled in a bright room, which comprises a support having provided thereon at least one silver halide emulsion layer containing silver chlorobromide grains (bromide content: not more than 20 mol %) or silver chloride grains, said emulsion layer containing 1.times.10.sup.-7 mol to 5.times.10.sup.-4 mol of a rhodium salt per mol of silver, and said emulsion layer or at least one other hydrophilic colloid layer containing at least one hydrazine derivative represented by the following general formula (I): ##STR1## wherein R represents an organic group having 1 to 30 carbon atoms; A represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthylene group; X represents --NH--or --O--; L.sub.1 represents a straight, branched or cyclic alkylene group having 1 to 20 carbon atoms, an aralkylene group having 7 to 20 carbon atoms, a phenylene group, or a divalent group having 1 to 20 carbon atoms, wherein these groups are linked to each other through --O--, --S--, --CO--, --CONH--or --COO--; L.sub.2 represents --CONH--, --SO.sub.2 NH--, --O--or --S--; i and j each independently represents 0 or 1; and B represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted phenyl group having 6 to 20 carbon atoms, a substituted or unsubstituted aralkyl group having a total of 7 to 20 carbon atoms and 1 to 3 carbon atoms in the alkyl moiety thereof, a substituted or unsubstituted alkoxy group haivng 1 to 20 carbon atoms, or a substituted or unsubstituted phenoxy group having 6 to 20 carbon atoms.
摘要翻译:一种卤化银照相材料,其可以在明亮的房间中处理,其包括其上提供有至少一个含有氯化银溴化银颗粒(溴含量:不大于20mol%)的卤化银乳剂层或氯化银颗粒的载体,所述乳液 含有每摩尔银1×10-7摩尔至5×10-4摩尔铑盐的层,所述乳剂层或至少一种含有至少一种由以下通式(I)表示的肼衍生物的其它亲水胶体层:(I)其中R表示碳原子数1〜30的有机基团。 A表示取代或未取代的亚苯基或取代或未取代的亚萘基; X表示-NH-或-O-; L1表示碳原子数1〜20的直链,支链或环状亚烷基,碳原子数7〜20的亚芳基,亚苯基或碳原子数1〜20的二价基,其中,这些基彼此相连 -O - , - S - , - CO - , - CONH-或-COO-; L 2表示-CONH-,-SO 2 NH-, - O-或-S-; i和j各自独立地表示0或1; B表示氢原子,取代或未取代的碳原子数1〜20的烷基,取代或未取代的碳原子数6〜20的苯基,取代或未取代的碳原子数为7〜20的芳烷基和1 至少3个碳原子,取代或未取代的碳原子数1〜20的烷氧基,或取代或未取代的碳原子数6〜20的苯氧基。
摘要:
A silver halide photosensitive material is described, comprising a support and at least one silver halide emulsion layer, wherein said emulsion layer or another layer contains a compound represented by formula (I) ##STR1## wherein X represents an atomic group forming a redox center of benzene type having substituents by linking with C.sub.A and C.sub.B, and which does not enable Time-PUG to be released until the redox center is oxidized during development processing; EWG represents an electron withdrawing group having a Hammet's .sigma. para value exceeding 0.3; C.sub.A and C.sub.B each represents a carbon atom; R.sub.1 and R.sub.2 each represents a hydrogen atom or a suitable substituent; Time represents a timing group connecting to C.sub.B through a sulfur, nitrogen, or selenium atom thereof, t is an integer of 0 or 1, and when t=0, Time is a chemical bond; PUG represents a photographically useful group and connects to C.sub.B through a sulfur, nitrogen, or selenium atom thereof when t=0; and n is an integer of 0 or 1.
摘要:
A silver halide photographic material comprising at least one negative type silver halide emulsion layer coated on a support, said emulsion comprising two kinds of monodisperse emulsions each having a means grain sizes of not more than 0.5 micron and, differing in mean grain size from each other at least by 0.1 micron, and said photographic material further comprising a hydrazine derivative in at least one photographic layer, whereby negative images of high density and very high contrast can be obtained with a high photographic speed and without black spots.
摘要:
A silver halide photographic light-sensitive material includes a compound selected from: (1) a quaternary nitrogen or phosphorus salt compound, having 20 or more of total recurring units consisting of an ethyleneoxy group and/or a propyleneoxy group; (2) a quaternary salt compound represented by formula (A): wherein Q represents nitrogen or phosphorus, R1, R2 and R3 represent an alkyl, aryl, alkenyl, alkynyl, or heterocyclic group, L1 represents an alkylene group, Y represents —C(═O) or —SO2—, L2 represents a divalent connecting group having at least one hydrophilic group, Xn− represents an n-valent counter anion, n being an integer of 1 to 3; and (3) a quaternary salt compound represented by formula (B): wherein A represents an organic moiety necessary to complete a nitrogen-containing aromatic heterocyclic ring. L2 represents a divalent connecting group having at least one hydrophilic group that divides L2. L1, Y and Xn− have the same meanings as above.
摘要:
A silver halide photographic material which comprises a support having thereon at least one of silver halide emulsion layer and other hydrophilic colloid layer where at least one of said silver halide emulsion layer and other hydrophilic colloid layer contains a hydrazine derivative represented by formula (I), and also having thereon, as a constitutional layer, at least one electroconductive layer having a surface resistivity of 1.times.10.sup.12 .OMEGA. or less in an atmosphere of 25.degree. C. and 25% RH; ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, ##STR2## or an iminomethylene group; A.sub.1 and A.sub.2 are both hydrogen atoms, or one of them represents a hydrogen atom and the other represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group. The material can be processed with a stable developer under a bright room condition to give a high contrast image. The material processed has negligible pinholes.
摘要:
A high contrast photographic image is formed by development of a photographic material with an amine-free developer having a low pH value. The photographic material has at least one silver halide emulsion on a support. The silver halide emulsion in the emulsion layer contains an iridium salt and/or a rhodium salt and comprises a gold-sensitized and sulfur-sensitized silver chlorobromide emulsion or silver chloroiodobromide emulsion having a silver chloride content of 50 mol% or more and a silver iodide content of 5 mol% or less. The emulsion layer contains a hydrazine compound represented by formula (I): ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group, which contains a partial structure, --O(--CH.sub.2 CH.sub.2 O).sub.n --, --O(--CH.sub.2 CH(CH.sub.3)O).sub.n -- or --O(--CH.sub.2 CH(OH)CH.sub.2 O).sub.n --, wherein n is an integer of 3 or more, as a part of the R.sub.1 substituent, or contains a quaternary ammonium cation as a part of the R.sub.1 substituent; G.sub.1 represents --CO--, --COCO--, --CS--, --C(=NG.sub.2 R.sub.2)--, --SO--, --SO.sub.2 -- or --P(O)(G.sub.2 R.sub.2)--, wherein G.sub.2 represents at least one chemical bond selected from the group consisting of --O--, --S-- or --N(R.sub.2)--, and R.sub.2 represents an aliphatic group, an aromatic group or a hydrogen atom. When the molecule has a plurality of R.sub.2 groups, they may be same as or different from each other. One of A.sub.1 and A.sub.2 is a hydrogen atom, and the other is a hydrogen atom, an acyl group, an alkylsulfonyl group or an arylsulfonyl group.