摘要:
An object of the present invention is to provide a heat-developable photosensitive material of less heat development temperature and humidity dependency, which is unlikely to be affected by uneven temperature distribution in heat development apparatuses and humidity condition, and can stably form uniform images, in particular, a heat-developable photosensitive material of improved stability of coating solutions overtime, which can form uniform ultrahigh contrast images without unevenness, which are suitable for mechanical processes, and exhibit suppressed fluctuation of photographic performance depending on the storage condition. According to the present invention, there is provided a heat-developable photosensitive material having at least one photosensitive image-forming layer comprising an organic silver salt, a photosensitive silver halide, a reducing agent and an organic binder, wherein at least one of the photosensitive image-forming layer and a layer adjacent to the photosensitive image-forming layer contains a first halogen-releasing precursor having at least one dissociative or hydrophilic substituent and a second hydrophobic halogen-releasing precursor.
摘要:
An acetylene compound is used in a thermographic image-recording element comprising on a support an image-recording layer containing a non-photosensitive organic silver salt, a reducing agent therefor, and a thermoplastic polymer binder. The element can be heat developed at lower temperatures.
摘要:
A photothermographic material exhibiting satisfactory photographic properties can be prepared using an aqueous dispersion of components. A photosensitive layer is formed by dispersing a binder and silver halide in an aqueous solvent containing at least 30 wt % of water to form an aqueous dispersion, coating the aqueous dispersion onto a support, and drying the coating. The binder is a polymer having an equilibrium moisture content of 0.1-2 wt % at 25.degree. C. and RH 60% or a thermoplastic resin. The binder is preferably based on a styrene-butadiene copolymer. Fog is suppressed even when the material is stored in a humid atmosphere.
摘要:
A heat developable light-sensitive material comprising an organic acid silver and silver halide, which contains a compound represented by the following formula (A) and a hydrazine derivative: ##STR1## wherein R represents a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms and R' and R" each represents an alkyl group having from 1 to 5 carbon atoms.
摘要:
A photothermographic material comprising a photosensitive silver halide, an organic silver salt, a reducing agent, and an ultrahigh contrast promoting agent, typically a hydrazine derivative. In one embodiment, a compound having a group for promoting adsorption to the silver halide is contained for suppressing occurrence of pepper fog. In another embodiment, a 5- or 6-membered heterocyclic mercapto compound having at least two nitrogen atoms or a tetraazaindene compound is contained for suppressing a change of photographic properties, typically image enlargement with a variation of developing conditions. In either case, the photothermographic material can form super-high contrast images of quality.
摘要:
There is disclosed a silver halide photographic light-sensitive material for plate making giving a hard gradation and having less variation in photographic performance due to fatigue of the developing solution. The silver halide photographic light-sensitive material has at least one silver halide emulsion layer and contains at least one of hydrazine compound represented by Formula (I) in the above emulsion layer or in another hydrophilic colloid layer. The light-sensitive material also contains at least one hydrazine compound represented by Formula (II) in the above emulsion layer or another hydrophilic colloid layers. ##STR1## The variables in these formulas are defined in the specification.
摘要:
A silver halide light-sensitive material containing a compound selected from compounds represented by formula (I) or (II): ##STR1## wherein L.sup.1 represents --O--, --S--, --SO--, --SO.sub.2 --, --N(R.sup.4)--, --CONR.sup.4 --, --NR.sup.4 CO--, --OCONR.sup.4 --, --NR.sup.4 CONR.sup.4 --, --SO.sub.2 NR.sup.4 --, --NR.sup.4 SO.sub.2 -- or --NR.sup.4 SO.sub.2 NR.sup.4 --, each of which is bonded to the pyridine ring at the right hand side thereof; L.sup.2, L.sup.3, and L.sup.4 each represent a divalent aliphatic group or a divalent aromatic group; G represents --CO--, --SO.sub.2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O)(G.sup.1 R.sup.4)--; G.sup.1 represents a single bond, --O-- or --NR.sup.4 --; R.sup.1 represents an aliphatic group or an aromatic group; R.sup.2 represents a monovalent substituent; n.sup.1 represents 0 or an integer of from 1 to 4; R.sup.3 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R.sup.4 represents a hydrogen atom, an aliphatic group or an aromatic group; R.sup.5 represents a monovalent group; m represents 0 or an integer of from 1 to 4; n.sup.2 represents 0 or an integer of from 1 to 5; and X.sup.- represents a counter anion or a counter anion moiety in an intramolecular salt; two or more R.sup.2 's, R.sup.4 's or R.sup.5 's, if any, may be the same or different.The light-sensitive material exhibits high processing stability even in rapid processing and provides a high contrast image even when developed with a developing solution at a low pH.
摘要翻译:含有选自式(I)或(II)表示的化合物的化合物的卤化银感光材料:其中L 1表示-O - , - S - , - (III) SO - , - SO 2 - , - N(R 4) - , - CONR 4 - , - NR 4 CO-, - OCONR 4 - , - NR 4 CONR 4 - , - SO 2 NR 4 - , - NR 4 SO 2 - 或-NR 4 SO 2 NR 4 - 在右手边环; L2,L3和L4各自表示二价脂族基团或二价芳族基团; G表示-CO - , - SO 2 - , - SO - , - COO-,硫代羰基,亚氨基亚甲基或-P(O)(G1R4) - 。 G1表示单键,-O-或-NR4-; R1表示脂肪族基团或芳香族基团; R2表示一价取代基; n1表示0或1至4的整数; R3表示氢原子,脂肪族基团,芳香族基团,烷氧基基团,芳氧基基团或氨基基团; R4表示氢原子,脂族基团或芳香族基团; R5表示一价基团; m表示0或1至4的整数; n2表示0或1〜5的整数, X表示分子内盐中的抗衡阴离子或抗衡阴离子部分; 两个或多个R2,R4或R5(如果有的话)可以相同或不同。 感光材料即使在快速加工中也表现出高的加工稳定性,即使在低pH下用显影液进行显影也能提供高对比度的图像。
摘要:
A silver halide photographic material which comprises a compound represented by the following general formulae (Ia) or (Ib):R.sup.1 --L.sup.1 --R.sup.2 --L.sup.2 --R.sup.3 --NHNH--G.sup.1 --R.sup.4 (Ia)R.sup.6 --L.sup.3 --R.sup.2 --NHNH--G.sup.1 --R.sup.4 (Ib)wherein the terms are as defined in the specification. The photographic material is capable of producing ultrahigh contrast images and is useful in photomechanical processes. An advantage of the material in comparison to prior materials is that can be developed using a developer having a lower pH value.
摘要:
A silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains at least one photographic agent represented by the following formula (I): ##STR1## wherein X represents a hydrogen atom or a group capable of forming a hydrogen atom upon hydrolysis; Time represents a divalent linking group; PUG represents a photographically useful group; V represents ##STR2## wherein R.sub.0 represents n alkoxy group or an aryloxy group, ##STR3## an iminomethylene group or ##STR4## R.sub.1 represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an alkoxy group, an aryloxy group, an amino group or --CHR.sub.2 --(Time).sub.m PUG; R.sub.2 represents a hydrogen atom, an aliphatic group, an aromatic group or a heterocyclic group; m represents 0 or 1; and n represents 0 or 1. The redox compound represented by formula (I) has excellent preservability and rapidly releases a photographically useful agent.
摘要:
A silver halide photographic material is disclosed, which has at least one compound represented general formula (1): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; both L and Time represent a divalent organic group; t represents 0 or 1; PUG represents a photographically useful group; Y represents --SO.sub.2 --, --Y'--SO.sub.2 --, or ##STR2## and Y' represents --O--, --NH--, or ##STR3## The material has a broad exposure latitude in line image-taking work and has a high resolving power in the work. It can form an ultrahard image having a high gamma value of 10 or more. The material may excellently reproduce a line original to form an ultrahard image having a high background density. It also has a broad exposure latitude in halftone dot image-taking work and can form a halftone dot image having ultrahigh contrast with high image quality.