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公开(公告)号：US5187054A
公开(公告)日：1993-02-16
申请号：US891744
申请日：1992-06-01
CPC分类号： G03C1/06 , G03C1/7614 , Y10S430/13 , Y10S430/162
摘要： A photographic material is disclosed containing in a non-light sensitive layer above the emulsion layer an anti-sludging compound corresponding to following general formula (I): ##STR1## wherein Ball represents a ballast group, L represents a divalent linking group and Z represents the necessary atoms to close a heterocyclic ring with the proviso that said heterocyclic ring contains no mercapto substituent. The divalent linking group is preferably chosen from the list of --O--, --S--, --CO--NR.sub.1 --, --NR.sub.2 --NR.sub.3 --,--SO.sub.2 --NR.sub.4 --, --O--CR.sub.5 R.sub.6 --CO--NH-- wherein each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 represents hydrogen, alkyl or aralkyl. The heterocyclic ring is preferably chosen from the list of imidazole, benzimidazole, 1,2,3-triazole, 1,2,4-triazole, benzotriazole, tetrazole, indazole, uracil and hydantoin.The non-light sensitive layer, wherein the anti-sludging compound is added, is preferably the top protective layer.
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公开(公告)号：US5413897A
公开(公告)日：1995-05-09
申请号：US238047
申请日：1994-05-04
IPC分类号： G03C1/06 , G03C1/07 , G03C1/08 , G03C1/43 , G03C1/485 , G03C7/305 , G03C8/06 , G03C8/28 , G03F7/00 , G03F7/07 , G03C8/00 , G03C1/10
CPC分类号： G03C1/485 , G03C7/305 , G03C8/06 , G03F7/07 , G03C1/07 , G03C1/08 , G03C2001/03564 , G03C2007/3032 , Y10S430/156
摘要： The present invention provides a photographic material comprising on a support (i) photosensitive silver halide particles, (ii) substantially light insensitive silver salt particles having a speed at least a factor 10 less than said photosensitive silver halide particles under the same conditions of exposure and development of said photosensitive silver halide particles and (iii) a releasing compound capable of image-wise releasing under the conditions for image-wise development of said photosensitive silver halide to silver a chemical sensitizer, said chemical sensitizer rendering said substantially light insensitive silver salt particles developable. The present invention also provides a method for making an image therewith and a method for making a lithographic printing plate.
摘要翻译： 本发明提供一种照相材料，其包含在（i）感光卤化银颗粒的载体上，（ii）在相同的曝光条件下具有比所述感光卤化银颗粒少至少10倍的速度的基本上不敏感的银盐颗粒，以及 所述光敏卤化银颗粒的开发和（iii）能够在用于将感光卤化银成像显影至银化学敏化剂的条件下成像释放的释放化合物，所述化学增感剂使所述基本上不敏感的银盐颗粒 可开发的 本发明还提供了一种用于制作图像的方法和一种制备平版印刷版的方法。
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公开(公告)号：US5198333A
公开(公告)日：1993-03-30
申请号：US668624
申请日：1991-03-13
IPC分类号： G03C1/035 , C07D401/12 , C07D413/12 , C07D417/12 , C07D513/04 , G03C1/36 , G03C1/485
CPC分类号： C07D401/12 , C07D413/12 , C07D417/12 , C07D513/04 , G03C1/36
摘要： A new class of electron-accepting compounds for photographic emulsions is disclosed represented by following general formula (I): ##STR1## wherein: each of Z and Q which may be the same or different represents the atoms necessary to complete an unsubstituted or substituted nitrogen-containing heterocyclic ring;each of T.sub.1 and T.sub.2 which may be the same or different represents alkyl, cycloalkyl, alkoxy, aryl, aryloxy, halogen, cyano, hydroxy, carboxyl, sulfo, carbamoyl, acyl, acylamino, sulfamoyl, sulfonamido or a benzocondensed ring, each of which can be further substituted or not;q=1, 2 or 3, and p and r=0, 1 or 2.In this formula the nitro containing heterocyclic nucleus is preferably nitropyridine or nitrothiazole.In a preferred embodiment of the invention electron-accepting compounds are incorporated in negative or direct positive roomlight emulsions. In the latter case the emulsion layer preferably contains in addition a nitroindazole or nitrobenzimidazole derivative.
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公开(公告)号：US5141843A
公开(公告)日：1992-08-25
申请号：US675518
申请日：1991-03-27
IPC分类号： G03C5/29 , C07D257/04 , G03C5/30 , G03C5/305
CPC分类号： C07D257/04 , G03C5/305
摘要： A developer liquid suited for use in development of photographic silver halide emulsion layer materials which liquid contains:1) hydroquinone or a substituted hydroquinone as sole developing agent or said hydroquinone as main developing agent in combination with an auxiliary developing agent in an amount less than 10 mole % with respect to the main developing agent,2) an inorganic compound yielding free sulphite ions in an amount of at least 5 grams per liter,3) an organic anti-fogging agent corresponding to the following general formula (Z): ##STR1## wherein: X.sup.2 represents an alkyl group or an aryl group including said groups in substituted form or an amino group including said group in substituted form;the amount of anti-fogging agent being in the range of 50 mg to 1 g per liter,4) a polymer containing a plurality of alkylene oxide units, and5) the necessary alkaline material to have in said liquid a pH of at least 10.5. Optional additives can also be present in the developing liquid.
摘要翻译： 一种适合用于显影卤化银乳剂层材料的显影剂液体，其液体包含：1）氢醌或取代的氢醌作为唯一显影剂或所述氢醌作为主要显影剂，与辅助显影剂的组合少于10 相对于主显影剂的摩尔％，2）产生至少5克/升的游离亚硫酸根离子的无机化合物，3）对应于以下通式（Z）的有机防雾剂：
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5.发明授权
公开(公告)号：US5340690A
公开(公告)日：1994-08-23
申请号：US32174
申请日：1993-03-15
摘要： According to the present invention there is provided a method for making a lithographic printing plate according to the DTR-process comprising the steps of:information-wise exposing an imaging element comprising on a support a silver halide emulsion layer and an image-receiving layer containing physical development nuclei anddeveloping said information-wise exposed imaging element with an alkaline processing liquid in the presence of developing agent(s) and silver halide solvent(s) characterized in that said silver halide solvents comprise a combination of (an) alkanolamine(s) and a thiosulfate wherein said thiosulfate is used in a total amount between 0.01% and 1% by weight in said alkaline processing liquid.
摘要翻译： 根据本发明，提供了根据DTR方法制备平版印刷版的方法，包括以下步骤：将包含在载体上的成像元件信息地曝光在卤化银乳剂层和含有 物理发育核，并在显影剂和卤化银溶剂存在下用碱性处理液显影所述信息曝光成像元件，其特征在于所述卤化银溶剂包含（a）链烷醇胺 ）和硫代硫酸盐，其中所述硫代硫酸盐在所述碱性处理液中的总量为0.01重量％至1重量％。
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公开(公告)号：US5200295A
公开(公告)日：1993-04-06
申请号：US804610
申请日：1991-12-10
CPC分类号： G03C8/28 , Y10S430/156
摘要： A method for the production of a silver image by the silver complex diffusion transfer reversal process, said method comprising the following steps:(I) image-wise photo-exposing a silver halide emulsion layer of a photographic silver halide emulsion having in waterpermeable relationship with the silver halide at least one developing agent,(II) wetting with a practically neutral aqueous liquid the said photo-exposed silver halide emulsion layer and/or wetting with said liquid a development nuclei containing layer of an image-receiving material as defined hereinafter and contacting said materials thereby bringing said layers into waterpermeable relationship with each other, and(III) separating the contacted materials after formation in the image-receiving material of a silver image,wherein said image-receiving material contains in co-operable relationship: (i) physical development nuclei, (ii) a silver halide solvent being a silver complexing agent or precursor thereof, (iii) a watersoluble sulfite or sulfite precursor, and (iv) a mixture of sodium and/or potassium tetraborate and a sodium and/or potassium salt of an organic mono- or polycarboxylic acid, wherein the acid is characterized by at least one dissociation step corresponding at 25.degree. C. with a dissociation constant smaller than 10.sup.-2.5, in other words a pKa value higher than 2.5.
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公开(公告)号：US5188919A
公开(公告)日：1993-02-23
申请号：US744410
申请日：1991-08-13
IPC分类号： G03G9/097
CPC分类号： G03G9/09775 , G03G9/09783 , Y10S430/104 , Y10S524/904 , Y10S525/934
摘要： Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net negative charge and contains thermoplastic resin(s) as binder in combination with a colorant and a compound capable of imparting a negative charge to the particulate toner material in contact electrification, wherein the latter compound is an anthranilic acid derivative comprising a sulfonamido-group.
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公开(公告)号：US5155014A
公开(公告)日：1992-10-13
申请号：US746800
申请日：1991-08-14
IPC分类号： C07D231/08 , G03C1/485 , G03C5/30 , G03C5/50
CPC分类号： G03C1/48538 , G03C5/50
摘要： Method for the production of direct-positive images by image-wise exposing a light-sensitive silver halide material comprising a support and an internal latent image-type silver halide emulsion layer and developing said exposed material in the presence of at least one development nucleator and density-increasing amounts of a compound chosen from the class consisting of formic acid, oxalic acid, glyoxylic acid, or salts of these and/or of a compound chosen from the class consisting of polyethylene glycols, with a hydroquinone-type developing solution having a pH not higher than 12.0 and comprising less than 25 g per liter of a hydroquinone and 5 to 100 g per liter of at least one alkanolamine.
摘要翻译： 通过使包含支持体和内部潜像型卤化银乳剂层的感光卤化银材料成像曝光并在至少一种显影成核剂存在下显影所述暴露材料的方法来生产直接阳性图像的方法，以及 选自甲酸，草酸，乙醛酸或其盐的化合物和/或选自聚乙二醇的化合物的浓度增加量与氢醌型显影液具有 pH不高于12.0，并且包含小于25g每升氢醌和5至100g /升至少一种链烷醇胺。
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公开(公告)号：US5324622A
公开(公告)日：1994-06-28
申请号：US921088
申请日：1992-07-29
IPC分类号： G03C1/06 , G03C1/07 , G03C1/08 , G03C1/43 , G03C1/485 , G03C7/305 , G03C8/06 , G03C8/28 , G03F7/00 , G03F7/07 , G03C8/00 , G03C1/10
CPC分类号： G03C1/485 , G03C7/305 , G03C8/06 , G03F7/07 , G03C1/07 , G03C1/08 , G03C2001/03564 , G03C2007/3032 , Y10S430/156
摘要： The present invention provides a photographic material comprising on a support (i) photosensitive silver halide particles, (ii) substantially light insensitive silver salt particles having a speed at least a factor 10 less than said photosensitive silver halide particles under the same conditions of exposure and development of said photosensitive silver halide particles and (iii) a releasing compound capable of image-wise releasing under the conditions for image-wise development of said photosensitive silver halide to silver a chemical sensitizer, said chemical sensitizer rendering said substantially light insensitive silver salt particles developable. The present invention also provides a method for making an image therewith and a method for making a lithographic printing plate.
摘要翻译： 本发明提供一种照相材料，其包含在（i）感光卤化银颗粒的载体上，（ii）在相同的曝光条件下具有比所述感光卤化银颗粒少至少10倍的速度的基本上不敏感的银盐颗粒，以及 所述光敏卤化银颗粒的开发和（iii）能够在用于将感光卤化银成像显影至银化学敏化剂的条件下成像释放的释放化合物，所述化学增感剂使所述基本上不敏感的银盐颗粒 可开发的 本发明还提供了一种用于制作图像的方法和一种制备平版印刷版的方法。
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公开(公告)号：US5312711A
公开(公告)日：1994-05-17
申请号：US730480
申请日：1991-07-16
CPC分类号： G03G9/09716
摘要： A negatively-chargeable dry electrostatographic developer is disclosed containing fluorinated inorganic microparticles, and toner particles comprising an acidic binder resin having an acid value between 10 and 30 mg KOH/G and not comprising (a) charge-controlling agent(s). The developers according to this invention show excellent fluidity and have improved negative chargeability. According to a preferred mode, fluorinated silica-type microparticles are added to the developer as free flowing additive in an amount of 0.1 to 5% by weight with respect to the toner, which preferably comprises an acidic carbon black.
摘要翻译： 公开了一种带有氟化无机微粒的带负电荷的干性静电显影剂，以及包含酸值为10至30mgKOH / G且不包含（a）电荷控制剂的酸性粘合剂树脂的调色剂颗粒。 根据本发明的显影剂显示出优异的流动性并且具有改进的负带电性。 根据优选的方式，氟化二氧化硅型微粒相对于优选包含酸性炭黑的调色剂为0.1-5重量％的量作为自由流动添加剂加入到显影剂中。
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