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    Sensitized photopolymerizable compositions and use thereof in lithographic printing plates
    3.
    发明公开
    Sensitized photopolymerizable compositions and use thereof in lithographic printing plates 失效
    Sensibilisierte fotopolymerisierbare Zusammensetzungen und ihre Verwendung in lithographischen Druckplatten

    公开(公告)号：EP0730201A1

    公开(公告)日：1996-09-04

    申请号：EP96200485.9

    申请日：1996-02-26

    申请人： EASTMAN KODAK COMPANY

    发明人： West, Paul Richard, c/o Eastman Kodak Company ,  Gurney, Jeffery Allen, c/o Eastman Kodak Company

    IPC分类号： G03F7/031 ,  C08F2/50

    CPC分类号： C08F2/50 ,  G03F7/031 ,  Y10S430/12 ,  Y10S430/121 ,  Y10S430/127

    摘要： Improved photopolymerization initiator systems are comprised of a spectral sensitizer that sensitizes in the ultraviolet or visible regions of the spectrum and an N-aryl, O-aryl or S-aryl polycarboxylic acid co-initiator. The improved initiator systems are incorporated in photo-polymerizable compositions containing one or more addition-polymerizable ethylenically-unsaturated compounds to form compositions suitable for the preparation of radiation-sensitive layers in lithographic printing plates adapted to be imagewise-exposed with ultraviolet- or visible-light-emitting lasers such as argon-ion lasers and frequency doubled Nd:YAG lasers. Such plates are able to effectively meet the dual requirements of very high photospeed and very good shelf-life required in computer-to-plate systems.

    摘要翻译： 改进的光聚合引发剂体系包括在光谱的紫外或可见光区中敏化的光谱增感剂和N-芳基，O-芳基或S-芳基多元羧酸共引发剂。 改进的引发剂体系结合在含有一种或多种可加成聚合的烯属不饱和化合物的光可聚合组合物中，以形成适于在平版印刷版中制备辐射敏感层的组合物，其适于用紫外或可见光形式曝光， 诸如氩离子激光器和倍频Nd：YAG激光器的发光激光器。 这样的板能够有效地满足计算机对板系统所需的非常高的光速和非常好的保质期的双重要求。

    Removal of tin from seasoned photographic color developers
    5.
    发明公开
    Removal of tin from seasoned photographic color developers 失效
    Farbentwicklern的Entfernung von Zinn aus verbrauchten photographischen

    公开(公告)号：EP0729066A1

    公开(公告)日：1996-08-28

    申请号：EP96200445.3

    申请日：1996-02-21

    申请人： EASTMAN KODAK COMPANY

    发明人： Anderson, Ernest R., Eastman Kodak Company ,  Lowery, Stephen Nelson, Eastman Kodak Company

    IPC分类号： G03C7/44 ,  G03C5/31

    CPC分类号： B01J45/00 ,  G03C7/44

    摘要： A process for removing tin from seasoned photographic color developers containing tin as stannous or stannate complex ions, comprising the steps of:

    (a) collecting seasoned photographic color developer containing tin;
    (b) treating the collected developer with a resin having a chelating group selected from diphosphonic acid, amidoxime and thiol, thereby removing tin from the composition.

    摘要翻译： 从经验丰富的照相彩色显影剂中除去锡的方法， 锡作为亚锡或锡酸盐络合物包括用螯合gp处理。 选自二膦酸，偕胺肟和硫醇。

    Process and apparatus for the development of photographic materials
    7.
    发明公开
    Process and apparatus for the development of photographic materials 失效
    Verfahren und Vorrichtung zur Entwicklung von photographischen Materialien

    公开(公告)号：EP0729064A2

    公开(公告)日：1996-08-28

    申请号：EP96200461.0

    申请日：1996-02-22

    申请人： KODAK LIMITED ,  EASTMAN KODAK COMPANY

    发明人： Fyson, John Richard, Kodak Limited

    IPC分类号： G03C5/31 ,  G03C5/395 ,  G03C7/44 ,  G03D3/00

    CPC分类号： G03D3/065 ,  G03C5/31 ,  G03D2203/0683

    摘要： A process for the development of photographic materials comprises developing the materials in a bath of developer processing solution and subjecting the used developer solution to a water recovery step comprising distillation or reverse osmosis and using the recovered water to prepare a photographic processing solution or as a compensator for evaporation loss and wherein said used developer solution passed to the water recovery step is free of contaminants such as ammonia or sulphur dioxide present in bleaching and fixing agents. Preferably the used developer solution is subjected to the water recovery without the addition of other photographic processing liquids. The recovered water may be used to prepare developer solution or developer replenisher solution and recycled to the developer processing bath. The invention includes an apparatus for the development of photographic materials and recycling water from the used developer solution which comprises a first tank (2) for holding developer processing solution, a second tank (4) for holding replenisher solution and connected to the first tank (2) so that replenisher solution may be fed thereto, a third tank (10) connected to the first tank (6) for receiving displaced developer solution, characterised in that distillation means (13,14) are provided for recovering water from the displaced solution and means (12) are provided for recycling the distilled water.

    摘要翻译： 用于开发照相材料的方法包括在显影剂处理溶液浴中显影材料，并对所用显影剂溶液进行包括蒸馏或反渗透的水回收步骤，并使用回收的水来制备照相处理溶液或作为补偿剂 对于蒸发损失，并且其中所述使用的显影剂溶液通过水回收步骤不含存在于漂白和固定剂中的污染物如氨或二氧化硫。 优选地，使用的显影剂溶液经受水回收而不加入其它照相处理液体。 回收的水可用于制备显影剂溶液或显影剂补充溶液并再循环至显影剂处理浴。 本发明包括一种用于开发照相材料和再循环来自所用显影剂溶液的水的装置，其包括用于保持显影剂处理溶液的第一罐（2），用于保持补充液的第二罐（4）并连接到第一罐（ 2），以便可以向其供给补充液;第三罐（10），连接到第一罐（6），用于接收置换的显影剂溶液，其特征在于，提供蒸馏装置（13,14）用于从置换的溶液中回收水 并且提供用于再循环蒸馏水的装置（12）。

    Process for buffering concentrated aqueous slurries
    10.
    发明公开
    Process for buffering concentrated aqueous slurries 失效
    缓冲浓缩水浆的方法

    公开(公告)号：EP0720046A3

    公开(公告)日：1996-07-24

    申请号：EP95203558.2

    申请日：1995-12-19

    申请人： EASTMAN KODAK COMPANY

    发明人： Texter, John, c/o Eastman Kodak Co., Patent Dep. ,  Sharma, Ravi, c/o Eastman Kodak Co., Patent Dep. ,  Czekai, David Alan

    IPC分类号： G03C1/005 ,  G03C7/388

    CPC分类号： G03C7/388 ,  G03C1/005

    摘要： A process for buffering concentrated aqueous slurries comprising the steps of:
       providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
       providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
       providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a2 and where pK a1 - 2 ≦ pK a1' ; and    combining said aqueous solution, said particulate solid substance, and said buffering salt to form a slurry;
       wherein said process is essentially devoid of any step comprising the addition of any weak acid, other than that arising from reaction between said buffering salt and said particulate solid substance, having greater than 2% by weight aqueous solubility at pH = pK a1 is disclosed. An aqueous-based slurry comprising:
       a particulate solid substance comprising a weak acid functional group having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
       an aqueous continuous phase at pH a1 + 3;
       a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ; and    where the incremental molar ionic strength in the continuous phase of said slurry resulting from said buffering salt is less than 0.04 mol/L is disclosed. A process for dispersing a particulate solid substance in a continuos aqueous phase comprising the steps of:
       providing a comminution reactor;    providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
       providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
       providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ;    providing milling media;
       combining said particulate solid substance, said aqueous solution, said buffering salt, and said milling media in said comminution reactor to produce a multiphase mixture; and
       milling said mixture to produce a reduced particle size slurry of said particulate solid substance is disclosed.

    摘要翻译： 一种用于缓冲处理浓缩的含水浆料，其包括以下步骤：提供包含弱酸官能团的微粒固体物质，具有在pH = pKa1的有效pKa1的> 1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶溶剂的混合物组成的水溶液，其pH值低于7和pKa1 + 2中的较大值; 提供弱酸的缓冲盐，其中与该缓冲盐结合的弱酸具有pKa2并且其中pKa1-2≤pKa1'; 并将所述水溶液，所述颗粒固体物质和所述缓冲盐混合以形成浆液; 其中所述方法基本上没有包括添加任何弱酸的步骤，除了所述缓冲盐和所述微粒固体物质之间的反应产生的弱酸之外，在pH = pKa1时具有大于2重量％的水溶解度。 一种水基浆液，其包含：在pH = pKa1时包含具有有效pKa1> 1且小于1重量％水溶解度的弱酸官能团的颗粒状固体物质; pH 1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶溶剂的混合物组成的水溶液，其pH值低于7和pKa1 + 2中的较大值; 提供弱酸的缓冲盐，其中与该缓冲盐相关的弱酸具有pKa1'且其中pKa1-2≤pKa1'; 提供研磨介质; 在所述粉碎反应器中混合所述颗粒状固体物质，所述水溶液，所述缓冲盐和所述研磨介质以产生多相混合物; 并研磨所述混合物以产生所述颗粒状固体物质的减小的颗粒尺寸浆料。