EP0398600B1 - Emulsions à l'halogénure d'argent dopé à sensibilité et contraste augmentés - Google Patents
Emulsions à l'halogénure d'argent dopé à sensibilité et contraste augmentés Download PDFInfo
- Publication number
- EP0398600B1 EP0398600B1 EP90305114A EP90305114A EP0398600B1 EP 0398600 B1 EP0398600 B1 EP 0398600B1 EP 90305114 A EP90305114 A EP 90305114A EP 90305114 A EP90305114 A EP 90305114A EP 0398600 B1 EP0398600 B1 EP 0398600B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsion
- silver halide
- speed
- moieties
- photographic element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/067—Additives for high contrast images, other than hydrazine compounds
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Definitions
- This invention relates to negative-acting silver halide photographic materials and in particular to photographic elements comprising Group VIII metal doped silver halide emulsions associated with a speed and contrast promoting agent which are suitable for use in the photolithographic printing industry and for the development of daylight handleable contact film.
- Photosensitive silver halide materials are commonly used in the photolithographic industry to obtain half tone, dot or line, high contrast images.
- contrast promoting agents among which are the water soluble Group VIII metal salts, such as the trivalent salts of rhodium, ruthenium and iridium. It is known that good results as regards high covering power (which is the ratio between the maximum density obtained after development and the silver halide coverage) and rapid developability (for productivity increase) can be obtained by using fine grained (less than 0.15 ⁇ m) and high chloride content silver halide emulsions. It is known that such emulsions which contain a Group VIII metal as a contrast promoting agent may still not have the required contrast, and as the dopant desensitises the emulsion, it may not have the required speed.
- contrast promoting agents among which are the water soluble Group VIII metal salts, such as the trivalent salts of rhodium, ruthenium and iridium.
- British Patent No. 741228 discloses the use of 4-substituted 3-amino-5-mercapto-4,1,2-triazoles of general formula (I) in which: R represents other than H, in photographic constructions.
- the compounds of formula (I) are said to restrain the formation of chemical fog without seriously affecting the speed, contrast or other properties of the emulsion.
- U.S. Patent No. 1,725,934 discloses the use of thiazole derivatives in silver halide constructions, but as an anti-fogging agent.
- DE-A-3403825 discloses a photographic material comprising a support and photographic layers including at least one silver halide emulsion layer which comprises (1) spectrally unsensitised negative silver halide having an average grain size of 0.1 to 0.3 ⁇ m and containing 80 mole % or more of silver chloride and (2) an organic desensitiser having an anodic polarographic potential and a cathodic polarographic potential which give a positive sum, and said photosensitive material meets at least one of the following requirements:
- JP-59-79250 discloses a silver halide photosensitive material for imagewise exposure containing at least 95 mol % silver chloride prepared in the presence of from 10 -7 to 10 -2 mol rhodium salt per mole of silver halide. It is processed with a developing solution containing a compound represented by general formula I and a compound represented by general formula II or III, and as a developing agent, substantially only p-dihydroxybenzene type developing agent, and more than 0.2 mol/l sulfite ions, and a pH of at least 11.
- DE-A-23 21 401 discloses a developer solution for the infectious development of silver halide light-sensitive material, which solution comprises a dihydroxybenzene as silver halide developing agents, an alkali, 0.005 to 0.05 mole per litre of free sulphite, a sulphite ion buffer and at least 10 milligrams per litre of the solution of a heterocyclic mercapto compound of the general formula: in which: Z represents the non-metallic atoms necessary to complete a 5- or 6-membered heterocyclic ring and comprises one or more carbon atom, nitrogen atom, sulphur atom and/or oxygen atom, the heterocyclic ring may be fused to another ring, and the ring or either or the rings may have one or more substituents; X represents a hydrogen atom, a cation or an alkyl group, and n is 1, 2 or 3.
- a photographic element comprising negative-acting silver halide emulsion characterised by the combination of features that the silver halide is doped with from 2.3 x 10 -5 to 10 -2 moles of a Group VIII metal per mole of silver and that the emulsion is associated with one or more speed and contrast promoting agents comprising a compound having a nucleus of one of the following general formulae: (i) to (iv) in which:
- the invention provides a negative-acting photosensitive silver halide material which may be used to obtain black and white half tone, line or dot images for photolithographic purposes.
- the element preferably comprises a support, having one or more hydrophilic colloidal layers located thereon, in which at least one layer comprises a fine grain, high chloride content and Group VIII metal doped photographic emulsion associated with one or more speed and contrast promoting agents selected from compounds of general formulae (i) to (iv).
- the speed and contrast promoting agents need not be present in the emulsion during imaging, but must be associated with the emulsion during development.
- the compounds of general formulae (i) to (iv) may be introduced in to the emulsion from a treatment bath or the developer solution.
- the compounds may be present in the photographic element during imaging and optionally additional compounds present in the developer solution.
- Examples of compounds suitable for inclusion as speed or contrast promoting agents are:
- the fine grain, high chloride content and Group VIII metal doped photographic emulsion is associated with one or more speed and contrast promoting agents selected from compounds A to E.
- the material After image wise exposure of the fine grain, high chloride content rhodium doped silver halide emulsion, the material undergoes a photographic processing step comprising an alkaline developing solution wherein the speed and contrast promoting agent is reactively associated with the emulsion.
- a photographic processing step comprising an alkaline developing solution wherein the speed and contrast promoting agent is reactively associated with the emulsion.
- the speed and contrast promoting agent in the developer solution followed by conventional washing or fixing but it is preferred that the agents are introduced as a precoating addition.
- fine grain is used in the context of the present invention to refer to silver halide grains having an average grain size of not more than 0.2 ⁇ m.
- High chloride content refers to the emulsion having at least 60% and preferably at least 80% of its total halide molar content consisting of chloride ions.
- the emulsion is preferably a chlorobromide emulsion wherein the remainder of the halide content comprises bromide ions and a most preferred emulsion comprises 84% silver chloride : 16% silver bromide having a mean silver halide grain size of 0.09 ⁇ m.
- Group VIII metal doped refers to the process whereby during precipitation or physical ripening of the silver halide emulsion, salts of one or more Group VIII metals, e.g., trisodium hexachlororhodate (III), disodium pentachlororuthenate (III) and tripotassium hexachloroiridate (III) are present in the solution.
- the preferred dopants are water-soluble trivalent salts of rhodium.
- the speed and contrast increasing effect of the compounds of general formulae (i) to (iv) is directly proportional to the level of dopant.
- the level of doping may be 2.3 x 10 -5 to 10 -2 moles Group VIII metal salt per mole of silver, preferably 10 -4 to 10 -2 moles Group VIII metal salt per mole of silver and most preferably from 10 -3 to 10 -2 mole Group VIII metal salt per mole of silver.
- the amount of the speed and contrast promoting agent added is in the range 10 -4 to 10 -1 mole of agent per mole of silver halide but preferably in the range 10 -2 to 5 x 10 -2 mole of agent per mole of silver halide.
- a silver halide emulsion of 84 mole % chloride and 16 mole % bromide was prepared by the simultaneous addition under constant agitation of water solution B and water Solution C by the double jet technique over a period of 25 minutes to water gelatin Solution A.
- the compositions A to C were:
- the water gelatin Solution A was kept at a constant temperature of 40°C.
- Solution B was added at a constant addition rate whilst the addition rate of Solution C was varied to maintain the potential of the emulsion thus formed at a value of 120 ⁇ 5mV (as measured with a specific electrode for Br ions and a reference electrode of the saturated Ag/AgC1 type).
- the emulsion so prepared following the removal of soluble salts by the conventional coagulation method, had a mean grain diameter of 0.09 ⁇ m.
- the emulsion was then chemically sensitised with sodium gold chloride and sodium thiosulphate. At the end of the chemical sensitisation a speed and contrast promoting agent selected from compounds A to J in a suitable solvent was added to the emulsion before preparation for coating with the addition of additional gelatin, coating surface active agents and formaldehyde hardener.
- the emulsion was coated at a silver coating weight of 2.7g Ag/m 2 onto a polyester support base which was backed with a red antihalation layer.
- the resulting films were exposed through a 0-2, 20cm continuous wedge.
- the exposing lamp was a Violux 1500S UV lamp at a distance of 52 inches from the film plane.
- the exposed films were developed in 3M RDC TM developer for 20 seconds @ 40°C and fixed in 3M Fix Roll TM Fixer.
- Contrast A is measured between densities 0.07 and 0.17 above Dmin.
- Contrast C is measured between densities 0.5 and 2.5 above Dmin.
- Each of compounds A to F were dissolved in an appropriate solvent and added at varying levels as a precoating addition to the emulsion.
- the emulsion used had the composition described previously and had been chemically sensitised with conventional sulphur and gold compounds.
- no speed and contrast enhancing compound is added and with conventional exposure and processing the film shows little development, only on extremely long exposures to UV light does any density build up.
- the compounds of the invention are added, then a dramatic speed and contrast increase is seen.
- Example 2 An alternative to the emulsion composition described in Example 1 was tested with Compound A.
- the emulsion was made following the protocol described previously except the halide ratio was altered from 84 : 16 chloride to bromide to 96 : 4. Very similar results were observed with increases in both speed and contrast.
- digested emulsion composition as per Example 1
- the film was given the standard exposure and processed in RDC developer having some of compound A added. Washing and fixing were carried out in a conventional fashion.
- Emulsion 4 was found to be too fast to be exposed by the Violux UV lamp so exposure was conducted with a quartz lamp.
- Table 6 shows the increase in speed (logE) observed on chemical sensitisation when Compound A is added as a precoating addition or not added at all. It can be seen that with no Compound A present, digestion gives a greater increase in speed with increasing levels of rhodium dopant, when Compound A is added as a final the effect of chemical sensitisation decreases with increasing rhodium dopant level i.e. at higher rhodium levels most of the speed increase comes from the addition of Compound A, the digestion step only gives a small further speed increase.
- Example 2 An emulsion similar to that in Example 1 was prepared except that the halide ratio was adjusted so that it was 96 mole % chloride 4% bromide emulsion. Seven emulsions were prepared with the following levels of Group VIII transition metal dopants.
- Example 2 Once prepared the emulsion was washed and chemically sensitised in the same way as in Example 1. Compound A was then added at a level of 1.95g per mole of silver. The emulsion was then coated onto clear subbed polyester with the conventional coating aids and hardeners at a coating weight of 2.5g Ag/m 2 .
- the resulting films were exposed through a 0-4 10cm continuous wedge.
- the exposing source was a Thiemer Spektra Proof Daylight containing a 1KW Th1007 polymer bulb.
- the exposed films were developed in 3M RDC developer for 30 seconds at 35°C and fixed in 3M Fix Roll fixer.
- Emulsions 6 and 7 show the effect of iridium doping. There is an overall desensitisation related to the level of dopant (see li) 6i) and 7i). On addition of Compound A speed, contrast and for the heavily doped emulsion maximum density are increased. For Emulsion 7 solarisation is also observed which is eliminated on addition of Compound A.
Claims (12)
- Elément photographique comprenant une émulsion d'halogénure d'argent à caractère négatif caractérisé par la combinaison de caractéristiques que l'halogénure d'argent est dopé avec de 2,3 x 10-5 à 10-2 mole d'un métal du Groupe VIII par mole d'argent et que l'émulsion est associée à un ou plusieurs agents favorisant la rapidité et le contraste comprenant un composé comportant un noyau d'une des formules générales suivantes : (i) à (iv)chaque R1 représente indépendamment un atome d'hydrogène ou un groupe alkyle de 1 à 5 atomes de carbone, comportant éventuellement un ou plusieurs substituants choisis parmi les fragments hydroxyle, les fragments carboxyle, les groupes alcoxy carbonyle de 1 à 5 atomes de carbone, les fragments cyano, les atomes d'halogène, les fragments nitro, les fragments amino et les groupes aryle jusqu'à 10 atomes de carbone, le groupe aryle pouvant être éventuellement substitué par un ou plusieurs substituants choisis parmi les groupes alkyle de 1 à 5 atomes de carbone, les fragments hydroxyle, les fragments carboxyle, les groupes alcoxy carbonyle de 1 à 5 atomes de carbone, les fragments cyano, les atomes d'halogène, les fragments nitro et les fragments amino,X1 représente N ou CR5, R5 représentant R1 (tel que défini ci-dessus) ou NO2,R2 représente un atome d'hydrogène ou SR1 (R1 est tel que défini ci-dessus) mais si X1 est N, alors R2 est SR1,Q représente S ou NR1, R1 étant tel que défini ci-dessus,R3 représente un groupe amino ou SR1, R1 étant tel que défini ci-dessus, etchaque R4 représente indépendamment R1 tel que défini ci-dessus ou un atome d'halogène, un fragment nitro, un fragment cyano ou un groupe alcoxy carbonyle de 1 à 5 atomes de carbone, l'émulsion étant exempte de dérivés d'hydrazine.
- Elément photographique suivant la revendication 1, caractérisé en ce que le dopant de métal du Groupe VIII est le rhodium.
- Elément photographique suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'émulsion d'halogénure d'argent comprend un support sur lequel sont appliquées une ou plusieurs couches colloïdales hydrophiles dans lesquelles au moins une couche comprend une émulsion d'halogénure d'argent à grain fin ayant une taille de grain moyenne ne dépassant pas 0,2 µm.
- Elément photographique suivant la revendication 4, caractérisé en ce que l'émulsion d'halogénure d'argent comprend une émulsion de chlorobromure dans laquelle le chlorure d'argent constitue au moins 60 % de la teneur en halogénure d'argent totale.
- Elément photographique suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'agent favorisant la rapidité et le contraste a une concentration de 10-4 à 10-1 mole par mole d'halogénure d'argent.
- Elément photographique suivant l'une quelconque des revendications précédentes, caractérisé en ce que la concentration de dopant de métal du Groupe VIII est de 10-4 à 10-2 mole de dopant par mole d'halogénure d'argent.
- Elément photographique suivant l'une quelconque des revendications précédentes, caractérisé en ce que le dopant comprend un sel de rhodium trivalent soluble dans l'eau.
- Elément photographique suivant l'une quelconque des revendications précédentes, caractérisé en ce que l'émulsion d'halogénure d'argent est sensibilisée au soufre et à l'or.
- Procédé photographique qui comprend l'exposition selon un mode de formation d'une image d'un élément photographique comprenant une émulsion d'halogénure d'argent à caractère négatif dopée avec de 2,3 x 10-5 à 10-2 mole d'un métal du Groupe VIII par mole d'argent, l'émulsion étant exempte de dérivés d'hydrazine, le développement et la fixation de l'élément exposé susdit dans lequel un ou plusieurs agents favorisant la rapidité et le contraste sont associés avec l'émulsion au cours du développement, l'agent précité étant choisi parmi les composés comportant un noyau d'une des formules générales :
R1 à R4, X1 et Q sont tels que définis dans la revendication 1, à la condition que la solution de révélateur ne convienne pas pour un développement infectieux de matériel photosensible à halogénure d'argent. - Procédé photographique suivant la revendication 10, caractérisé en ce que l'agent favorisant la rapidité et le contraste :(i) est présent dans l'émulsion avant l'exposition, et/ou,(ii) est introduit dans l'émulsion après l'exposition, et/ou,(iii) est présent dans la solution de révélateur.
- Solution de développement pour un élément photographique, caractérisée en ce que la solution de développement comprend un ou plusieurs agents favorisant la rapidité et le contraste des formules :
R1 à R4, X1 et Q sont tels que définis dans la revendication 1, à la condition que la solution de révélateur ne convienne pas pour un développement infectieux de matériel photosensible à halogénure d'argent.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8911453 | 1989-05-18 | ||
GB898911453A GB8911453D0 (en) | 1989-05-18 | 1989-05-18 | Speed and contrast promoted silver halide rhodium doped emulsions |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0398600A2 EP0398600A2 (fr) | 1990-11-22 |
EP0398600A3 EP0398600A3 (fr) | 1991-10-09 |
EP0398600B1 true EP0398600B1 (fr) | 1996-10-09 |
Family
ID=10656972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90305114A Expired - Lifetime EP0398600B1 (fr) | 1989-05-18 | 1990-05-11 | Emulsions à l'halogénure d'argent dopé à sensibilité et contraste augmentés |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0398600B1 (fr) |
JP (1) | JPH036551A (fr) |
AU (1) | AU624946B2 (fr) |
CA (1) | CA2016495A1 (fr) |
DE (1) | DE69028801T2 (fr) |
GB (1) | GB8911453D0 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8329914B2 (en) | 2008-10-31 | 2012-12-11 | Merck Sharp & Dohme Corp | Cyclic benzimidazole derivatives useful as anti-diabetic agents |
US8563746B2 (en) | 2008-10-29 | 2013-10-22 | Merck Sharp & Dohme Corp | Cyclic benzimidazole derivatives useful as anti-diabetic agents |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9912098A (pt) | 1998-07-15 | 2001-09-25 | Teijin Ltd | Derivado de tiobenzimidazol, composição farmacêutica, e, agente preventivo e/ou terapêutico |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321401A1 (de) * | 1972-04-28 | 1973-11-15 | Fuji Photo Film Co Ltd | Entwicklungsverfahren und entwicklungsbad |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3403825A1 (de) * | 1983-02-04 | 1984-08-16 | Mitsubishi Paper Mills, Ltd., Tokyo | Fotografische, fotoempfindliche silberhalogenidmaterialien |
GB2190510B (en) * | 1986-04-02 | 1989-11-22 | Fuji Photo Film Co Ltd | Silver halide photographic material and image-forming method using the same |
JPH0612406B2 (ja) * | 1986-11-14 | 1994-02-16 | 富士写真フイルム株式会社 | 超硬調ネガ型ハロゲン化銀写真感光材料 |
JPH01183643A (ja) * | 1988-01-18 | 1989-07-21 | Fuji Photo Film Co Ltd | ハロゲン化銀カラー感光材料 |
-
1989
- 1989-05-18 GB GB898911453A patent/GB8911453D0/en active Pending
-
1990
- 1990-05-02 AU AU54632/90A patent/AU624946B2/en not_active Ceased
- 1990-05-10 CA CA 2016495 patent/CA2016495A1/fr not_active Abandoned
- 1990-05-11 EP EP90305114A patent/EP0398600B1/fr not_active Expired - Lifetime
- 1990-05-11 DE DE1990628801 patent/DE69028801T2/de not_active Expired - Fee Related
- 1990-05-17 JP JP12809990A patent/JPH036551A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321401A1 (de) * | 1972-04-28 | 1973-11-15 | Fuji Photo Film Co Ltd | Entwicklungsverfahren und entwicklungsbad |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8563746B2 (en) | 2008-10-29 | 2013-10-22 | Merck Sharp & Dohme Corp | Cyclic benzimidazole derivatives useful as anti-diabetic agents |
US8329914B2 (en) | 2008-10-31 | 2012-12-11 | Merck Sharp & Dohme Corp | Cyclic benzimidazole derivatives useful as anti-diabetic agents |
Also Published As
Publication number | Publication date |
---|---|
AU624946B2 (en) | 1992-06-25 |
EP0398600A2 (fr) | 1990-11-22 |
CA2016495A1 (fr) | 1990-11-18 |
AU5463290A (en) | 1990-11-22 |
DE69028801D1 (de) | 1996-11-14 |
GB8911453D0 (en) | 1989-07-05 |
JPH036551A (ja) | 1991-01-14 |
DE69028801T2 (de) | 1997-04-10 |
EP0398600A3 (fr) | 1991-10-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4328302A (en) | Lithographic silver halide photographic light-sensitive material | |
US4469783A (en) | Silver halide photographic emulsions | |
US5266442A (en) | Method for increasing the contrast of photographic silver images | |
EP0517889B1 (fr) | Stabilisateurs au thiosulfonate-sulfinate pour emulsions photosensibles | |
EP0231850B1 (fr) | Procédé de formation d'images négatives à haut contraste et élément photographique à l'halogénure d'argent | |
EP0476613B1 (fr) | Procédé pour former des images négatives à très haut contraste | |
EP0285308B2 (fr) | Matériaux photographiques à contraste élevé | |
EP0398600B1 (fr) | Emulsions à l'halogénure d'argent dopé à sensibilité et contraste augmentés | |
US4912029A (en) | Silver halide photographic materials | |
US4455365A (en) | Silver halide photographic material for photomechanical process and reduction processing method thereof | |
JPS61122642A (ja) | ハロゲン化銀写真感光材料 | |
US5141843A (en) | Developer liquid for high contrast development | |
US5849470A (en) | Mixed grain emulsions of the same grains having different speed properties for photographic elements | |
US4863843A (en) | Silver halide photographic emulsion containing predominantly silver bromide | |
JPH02306237A (ja) | 画像形成法 | |
JPS60263146A (ja) | 画像形成法 | |
EP0376500B1 (fr) | Procédé pour la sensibilisation spectrale d'une émulsion à l'halogénure d'argent | |
US5316901A (en) | Negative-acting silver halide photographic elements having extended UV exposure latitude | |
US6503697B2 (en) | Light-sensitive silver halide photographic material for forming direct-positive images and method for making same | |
US4001021A (en) | Lithographic development of a lith-type silver halide emulsions containing a benzimidazole | |
EP0745892A1 (fr) | Eléments photographique à haut contraste stabilisé | |
EP0428334A1 (fr) | Procédé pour la sensibilisation des émulsions photographiques à l'halogénure d'argent et produits | |
US4539291A (en) | Direct positive silver halide photographic materials | |
EP0467106B1 (fr) | Matériaux photographiques à l'halogénure d'argent sensible à la lumière | |
JPH0337642A (ja) | ハロゲン化銀写真感光材料 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): BE DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19901224 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): BE DE FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19941014 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB IT |
|
ITF | It: translation for a ep patent filed |
Owner name: PROROGA CONCESSA IN DATA: 16.12.96;BARZANO' E ZANA |
|
REF | Corresponds to: |
Ref document number: 69028801 Country of ref document: DE Date of ref document: 19961114 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19970531 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: MINNESOTA MINING AND MFG CY Effective date: 19970531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000404 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000504 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20000531 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010511 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010511 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050511 |