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公开(公告)号：US5480770A
公开(公告)日：1996-01-02
申请号：US267505
申请日：1994-06-29
IPC分类号： G03C1/295 , C07C329/16 , C07C333/20 , G03C1/485 , G03C5/50 , G03C5/305
CPC分类号： G03C1/48561 , C07C329/16 , C07C333/20
摘要： The present invention provides a method for making direct-positive photographic images comprising the steps of image-wise exposing a photographic light-sensitive silver halide material comprising a support and a layer of an internal latent image-type silver halide emulsion the pAg of which has been adjusted to a value of at least 8.5 before coating, and developing said exposed photographic silver halide material in a surface developer in the presence of at least one development nucleator which is not able to react with but which is able to adsorb weakly on the surface of the silver halide emulsion crystals prior to development, but which contains a group protected against reaction with silver halide and which is transformed during development in a nucleating derivative with an enhanced reactivity for the silver halide crystals. Photographic materials comprising these novel development nucleators are also described.
摘要翻译： 本发明提供一种制造直接正性照相图像的方法，包括以下步骤：将包含支持体的照相感光卤化银材料和其pAg的内部潜像型卤化银乳剂层成像曝光 在涂覆之前调节至少为8.5，并且在存在至少一种显影成核剂的情况下在表面显影剂中显影所述曝光的照相卤化银材料，所述显影成核剂不能与表面上的弱吸收而不能反应 的卤化银乳液晶体，但是其含有保护不与卤化银反应的基团，并且在显影期间在具有增强的卤化银晶体的反应性的成核衍生物中转化。 还描述了包含这些新型显影成核剂的照相材料。
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公开(公告)号：US5691121A
公开(公告)日：1997-11-25
申请号：US680358
申请日：1996-07-15
CPC分类号： G03C1/48546 , G03C1/067 , Y10S430/141
摘要： A photographic light-sensitive silver halide material is provided for making negative lithographic images or direct-positive images, said material comprising a support, at least one internal latent image-type silver halide emulsion layer (in the case of direct-positive materials) or surface latent image-type silver halide emulsion layer (in the case of lithographic materials) and development-nucleating amounts of a compound or a precursor thereof, said compound having at least one quaternary heterocyclic ring system comprising at least three rings including a tetrahydropyridinium ring wherein carbon-nitrogen and carbon-carbon double bonds are also part of an aromatic ring being one of said three rings and wherein said double bonds and nitrogen atom in said tetrahydropyridinium ring are incorporated into annelated conjugated ring systems. Developing said photographic material after exposure in an alkaline surface developer rapidly converts said precursor into a ring system as defined hereinbefore.
摘要翻译： 提供摄影感光卤化银材料，用于制作负性平版印刷图像或直接正像，所述材料包括载体，至少一个内部潜像型卤化银乳剂层（在直接正极材料的情况下）或 表面潜像型卤化银乳剂层（在平版印刷材料的情况下）和显影成核量的化合物或其前体，所述化合物具有至少一个四元杂环系统，其包含至少三个包括四氢吡啶鎓环的环，其中 碳 - 氮和碳 - 碳双键也是作为所述三个环之一的芳香环的一部分，并且其中所述四氢吡啶鎓环中的所述双键和氮原子并入到环状共轭环体系中。 在碱性表面显影剂中曝光后显影所述照相材料快速地将所述前体转化成如上所定义的环系。
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公开(公告)号：US5449595A
公开(公告)日：1995-09-12
申请号：US267410
申请日：1994-06-29
IPC分类号： G03C1/295 , C07D487/04 , G03C1/485 , G03C5/50
CPC分类号： C07D487/04 , G03C1/48538 , G03C1/48561 , Y10S430/141
摘要： The present invention relates to a method for making direct-positive photographic images by developing light-sensitive materials in the presence of development nucleators which do not cause loss of sensitivity during exposure or unevenness of development. More specifically the invention relates to the formation of direct-positive images having a high maximum density and high exposure latitude and to photographic materials for use in said formation, which is accomplished by a method for making direct-positive images comprising:image-wise exposing a photographic light-sensitive silver halide material comprising a support and a layer of an internal latent image-type silver halide emulsion, the pAg of which has been adjusted to a pAg-value between 9.0 and 10.5 inclusive before coating, anddeveloping said exposed photographic silver halide material in a surface developer in the presence of a development nucleator with a group promoting adsorption to silver halide.It has been found that in a particular embodiment of this invention a development-nucleating amount of a hydrazine compound with a 7-hydroxy-s-triazolo-[1,5-a]-pyrimidine group as group promoting adsorption to silver halide is very useful.
摘要翻译： 本发明涉及通过在显影成核剂的存在下开发感光材料来制造直接正性照相图像的方法，其不会在曝光或显影不均匀期间引起敏感性的损失。 更具体地，本发明涉及形成具有高最大密度和高曝光宽容度的直接正像，以及用于所述地层中的照相材料，其通过用于制造直接正像的方法来实现，包括：图像曝光 一种照相感光卤化银材料，其包含载体和一层内部潜像型卤化银乳剂，其pAg已被调节至涂覆前的9.0和10.5之间的pAg值，并显影所述曝光的照相 卤化银材料在显影成核剂存在下在表面显影剂中具有促进对卤化银吸附的基团。 已经发现，在本发明的一个具体实施方案中，显影成核量的具有7-羟基-s-三唑并 - [1,5-a] - 嘧啶基的肼化合物作为促进对卤化银吸附的基团是非常 有用。
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4.发明授权Process for the preparation of a hybrid direct positive emulsion and photographic material containing such an emulsion 失效用于制备混合直接阳性乳液和含有这种乳液的照相材料的方法
公开(公告)号：US5498517A
公开(公告)日：1996-03-12
申请号：US315449
申请日：1994-09-30
申请人： Ann Verbeeck , Kris Viaene
发明人： Ann Verbeeck , Kris Viaene
CPC分类号： G03C1/48515 , G03C1/035 , G03C1/22
摘要： A process is disclosed for the preparation of a hybrid direct positive silver halide emulsion comprising the steps of (1) forming an essentially cubic host grain emulsion consisting of silver bromide or silver iodobromide, with a iodide content between 0 and 10 mole %, by a balanced double jet, (2) depositing epitaxially on the corners of said formed essentially cubic host grains a silver iodide crystallographic phase wherein said silver iodide phase contains at most 5 % of the total crystal silver halide, either by precipitating a silver chloride epitaxial phase and converting it to silver iodide, or by adding silver ions and an organic iodide releaser.The organic iodide releaser is preferably mono-iodoacetic acid.
摘要翻译： 公开了一种用于制备混合直接正卤化银乳剂的方法，包括以下步骤：（1）通过以下步骤形成由碘化银含量为0至10摩尔％的溴化银或碘溴化银组成的基本上立方体的主体颗粒乳剂 （2）在所形成的基本上立方的主体颗粒的角上外延沉积碘化银结晶相，其中所述碘化银相含有总结晶卤化银的至多5％，通过沉淀氯化银外延相和 将其转化为碘化银，或加入银离子和有机碘化物释放剂。 有机碘化物释放剂优选为单碘代乙酸。
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公开(公告)号：US07026108B2
公开(公告)日：2006-04-11
申请号：US10625021
申请日：2003-07-23
申请人： Kris Viaene , Jan Gilleir , Geert De Roover
发明人： Kris Viaene , Jan Gilleir , Geert De Roover
摘要： A method has been disclosed for preparing a co-precipitated microcrystalline dye dispersion, the absorption spectrum of which exceeds the summoned spectra of individually dispersed dyes, which comprises, as consecutive preparation steps: adding to one vessel, an amount of at least one pentamethine oxonol-type barbituric acid filter dye having ionizable sites in its molecular structure; adding thereto an aqueous alkaline solution in an amount sufficient to completely dissolve the said filter dye while stirring the solution thus formed; adding in another vessel, to an amount of at least one pyrrole type filter dye, an amount of water, followed by adding of an aqueous alkaline solution and a surfactant; followed, after having completely dissolved (under stirring conditions) the said pyrrole type filter dye, by adding to the solution thus formed in the other vessel, the solution formed in the one vessel; adding an aqueous acidic solution up to a pH of less than 3.0; adding an aqueous alkaline solution up to a pH in the range from 4.0 up to 5.5; followed by adding a binder in order to make the dispersion thus obtained ready-for-coating in a filter dye layer on a support, suitable for use as antihalation undercoat layer between said support and a light-sensitive layer or as a backing layer of said material, or as layer covering the light-sensitive layer, thus providing safelight protection.
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公开(公告)号：US06641621B2
公开(公告)日：2003-11-04
申请号：US10090294
申请日：2002-03-04
申请人： Kris Viaene , Jan Gilleir , Geert De Roover
发明人： Kris Viaene , Jan Gilleir , Geert De Roover
IPC分类号： C09B6722
摘要： A method has been disclosed for preparing a co-precipitated microcrystalline dye dispersion, the absorption spectrum of which exceeds the summoned spectra of individually dispersed dyes, which comprises, as consecutive preparation steps: adding to one vessel, an amount of at least one pentamethine oxonol-type barbituric acid filter dye having ionizable sites in its molecular structure; adding thereto an aqueous alkaline solution in an amount sufficient to completely dissolve the said filter dye while stirring the solution thus formed; adding in another vessel, to an amount of at least one pyrrole type filter dye, an amount of water, followed by adding of an aqueous alkaline solution and a surfactant; followed, after having completely dissolved (under stirring conditions) the said pyrrole type filter dye, by adding to the solution thus formed in the other vessel, the solution formed in the one vessel; adding an aqueous acidic solution up to a pH of less than 3.0; adding an aqueous alkaline solution up to a pH in the range from 4.0 up to 5.5; followed by adding a binder in order to make the dispersion thus obtained ready-for-coating in a filter dye layer on a support, suitable for use as antihalation undercoat layer between said support and a light-sensitive layer or as a backing layer of said material, or as layer covering the light-sensitive layer, thus providing safelight protection.
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公开(公告)号：US06503697B2
公开(公告)日：2003-01-07
申请号：US09872900
申请日：2001-06-02
申请人： Kris Viaene , Paul Callant
发明人： Kris Viaene , Paul Callant
IPC分类号： G03C1005
CPC分类号： G03C1/122 , G03C1/4853
摘要： A black-and-white silver halide photographic material has been disclosed, coated on a support with at least one light-sensitive emulsion layer, comprising a spectrally sensitized prefogged direct-positive silver halide emulsion, providing peak absorption in the wavelength range from 600 nm up to 700 nm, wherein said emulsion comprises a binder and core-shell emulsion crystals having silver bromide in a total amount of at least 80 mole %, characterized in that said emulsion is spectrally sensitized with a combination of a desensitizing dye having an absorption maximum wavelength in a range from 600 nm up to 700 nm, if present as a sole dye in said emulsion, and at least one azacyanine dye having an absorption maximum at a more hypsochromic wavelength.
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公开(公告)号：US06551769B2
公开(公告)日：2003-04-22
申请号：US09968292
申请日：2001-10-01
申请人： Kris Viaene , Etienne Van Thillo , Hartwig Andries
发明人： Kris Viaene , Etienne Van Thillo , Hartwig Andries
IPC分类号： G03C1795
CPC分类号： G03C1/89 , G03C1/7614 , G03C1/83 , G03C1/853 , G03C2001/7628 , Y10S430/162
摘要： A silver halide photographic film element has been disclosed, said element comprising on a light-sensitive side of a transparent polyester support, and, in order, an electrically conductive subbing layer, an antihalation undercoat, a light-sensitive emulsion layer or multilayer arrangement, optionally including one or more intermediate, non-light-sensitive layers between emulsion layers in said multilayer arrangement, and a protective overcoat; and on a backing layer side opposite thereto, in order, a subbing layer containing a lubricant and a topcoat layer, characterized in that on the light-sensitive side of said element said subbing layer comprises an antistatic agent providing a substantially unchanged electrical resistivity of the said element before and after processing of said material, and said antihalation undercoat optionally comprises a high temperature boiling solvent; whereas on the backing layer side a friction coefficient of the backing layer versus stainless steel remains unchanged in the range between 0.20 and 0.30 before and after processing of said material, even after removal of the said topcoat layer during processing in an alkaline developer.
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