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    • 2. 发明公开
    • Method for the production of a silver image
    • 韦尔法罕zur Herstellung eines Silberbildes。
    • EP0491089A1
    • 1992-06-24
    • EP90203374.5
    • 1990-12-18
    • AGFA-GEVAERT naamloze vennootschap
    • Vermeulen, Leon LouisPauwels, Robert SophiaDewanckele, Jean-Marie Odil
    • G03C8/28G03C8/06
    • G03C8/28Y10S430/156
    • 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 material 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 °C with a dissociation constant smaller than 10 -2.5 , in other words a pKa value of at least 2.5.
    • 一种通过银络合物扩散转移反转方法生产银图像的方法,所述方法包括以下步骤:(I)成像曝光卤化银乳剂层,其具有与水不透明的关系的照相卤化银乳剂材料 使用卤化银至少一种显影剂,(II)用几乎中性的水性液体润湿所述光曝光的卤化银乳剂层和/或与所述液体一起润湿如下文所定义的图像接收材料的显影含核层 并使所述材料接触从而使所述层彼此具有水可渗透的关系,和(III)在银图像的图像接收材料中形成之后分离所接触的材料,其中所述图像接收材料包含可协作的关系:( i)物理发育核,(ii)卤化银溶剂,其为银络合剂或其前体,(i ii)水溶性亚硫酸盐或亚硫酸盐前体,和(iv)四硼酸钠和/或钾的混合物和有机单羧酸或多元羧酸的钠和/或钾盐的混合物,其中所述酸的特征在于至少一个解离步骤 相应于25℃,解离常数小于10 <2.5,换句话说,pKa值至少为2.5。 Ë
    • 4. 发明公开
    • Anti-sludging compounds in photographic material
    • Schlammschutzmittel在fotografischen Materalien。
    • EP0520092A1
    • 1992-12-30
    • EP91201605.2
    • 1991-06-24
    • AGFA-GEVAERT naamloze vennootschap
    • Dewanckele, Jean-Marie OdilHofman, Emiel Alexander
    • G03C1/06G03C1/76
    • G03C1/06G03C1/7614Y10S430/13Y10S430/162
    • 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) :

      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-NR₁-, -NR₂-CO-NR₃-, - SO₂-NR₄-, -O-CR₅R₆-CO-NH- wherein each of R₁, R₂, R₃, R₄, R₅ and R₆ 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.
    • 公开了一种照相材料,其在乳剂层上方的非感光层中含有对应于以下通式(I)的防淤化合物:其中Ball代表镇流剂基团,L表示二价连接基团,Z表示 必要的原子封闭杂环,条件是所述杂环不含巯基取代基。 二价连接基团优选选自-O - , - S - , - CO-NR 1 - , - NR 2 -CO-NR 3 - , - SO 2 -NR 4 - , - O-CR 5 R 6 -CO-NH- 的R 1,R 2,R 3,R 4,R 5和R 6表示氢,烷基或芳烷基。 杂环优选选自咪唑,苯并咪唑,1,2,3-三唑,1,2,4-三唑,苯并三唑,四唑,吲唑,尿嘧啶和乙内酰脲的列表。 其中添加防淤化合物的非光敏层优选为顶部保护层。
    • 8. 发明公开
    • Developer liquid for high contrast development
    • Entwicklerflüssigkeitfürdie kontrastreiche Entwicklung。
    • EP0450198A1
    • 1991-10-09
    • EP90200800.2
    • 1990-04-04
    • AGFA-GEVAERT naamloze vennootschap
    • Ooms, Richard AlfonsKok, PietDewanckele, Jean-Marie Odil
    • G03C5/305C07D257/04
    • C07D257/04G03C5/305
    • 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 litre,
      3) an organic anti-fogging agent corresponding to the following general formula (Z) :
      wherein :
      X² 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 litre,
      4) a polymer containing a plurality of alkylene oxide units, and
      5) the necessary alkaline material to have in said liquid a pH of at least 10.5.
    • 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的显影剂或所述氢醌作为主要显影剂与辅助显影剂的组合量小于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: