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    • 4. 发明授权
    • Concentrated dampening solution with an improved anti-staining activity for printing with a lithographic printing plate obtained according to the silver salt diffusion transfer process
    • 浓缩润版液,具有改善的抗污染活性,用根据银盐扩散转移法获得的平版印刷版进行印刷
    • US06436176B1
    • 2002-08-20
    • US08679243
    • 1996-07-12
    • Johan Van HunselPaul Mortelmans
    • Johan Van HunselPaul Mortelmans
    • B41N300
    • B41N3/08
    • The present invention provides a concentrated dampening solution for use in a lithographic printing process having a pH between 3 and 6 and comprising a water-soluble organic solvent, a phosphate salt and a transparent pigment, characterized in that said transparent pigment is a modified silica in which the silica particles have a number average size of 0.003 to 0.100 &mgr;m and in which the silica particles are coated with chemically combined atoms of an amphoteric metal which forms an insoluble silicate at a pH between 5 and 12, said metal atoms being chemically bound through oxygen atoms to silicon atoms in the surface of said particles, and the amount of said metal being such that: Gram atoms M/Gram atoms Si=A/1250 to A/250000 where M is the metal and A is the surface area of the particles of the silica sol expressed in m2/g.
    • 本发明提供了一种用于平版印刷方法的浓缩润版溶液,其具有3至6的pH,并且包含水溶性有机溶剂,磷酸盐和透明颜料,其特征在于所述透明颜料是改性二氧化硅 所述二氧化硅颗粒的数均分子量为0.003至0.100μm,并且其中所述二氧化硅颗粒在pH为5至12之间的情况下用形成不溶性硅酸盐的两性金属的化学组合原子涂覆,所述金属原子通过化学键合 氧原子与所述颗粒表面中的硅原子,并且所述金属的量使得:克原子M /格原子Si = A / 1250至A / 250000其中M是金属,A是表面积 硅溶胶颗粒以m2 / g表示。
    • 9. 发明授权
    • On the press development of a diazo based printing plate
    • 关于重氮基印刷版的新闻发展
    • US5922511A
    • 1999-07-13
    • US729513
    • 1996-10-11
    • Joan VermeerschDirk KokkelenbergJohan Van HunselGuido Hauquier
    • Joan VermeerschDirk KokkelenbergJohan Van HunselGuido Hauquier
    • B41C1/10G03F7/016G03F7/32
    • G03F7/016
    • According to the present invention there is provided a method for making a lithographic printing plate comprising the steps of:(1) image-wise exposing an imaging element having on a support in the order given (i) a uniform ink-repellant layer comprising a hydrophilic binder cross-linked by means of a hydrolysed tetra-alkylorthosilicate and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin;(2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and supplying an aqueous dampening liquid and/or ink to said photosensitive layer.The present invention also provides a method for making multiple copies of an original comprising the steps of:(1) image-wise exposing an imaging element having on a support in the order given (i) a uniform ink-repellant layer comprising a hydrophilic binder cross-linked by means of a hydrolysed tetra-alkylorthosilicate and (ii) a photosensitive layer comprising a diazonium salt or a diazo resin;(2) mounting a thus obtained image-wise exposed imaging element without development, on a print cylinder of a printing press;(3) rotating said print cylinder while supplying an aqueous dampening liquid and/or supplying ink to said photosensitive layer of said imaging element and(4) transfering ink from said imaging element to a receiving element.
    • 根据本发明,提供了一种制备平版印刷版的方法,包括以下步骤:(1)以给定的顺序成像曝光具有在支持体上的成像元件,其中(i)均匀的墨水排斥层包含 通过水解的四烷基原硅酸酯交联的亲水性粘合剂和(ii)包含重氮盐或重氮树脂的感光层; (2),并将如此获得的图像曝光的成像元件通过将其安装在印刷机的印刷滚筒上并将水性润版液体和/或墨水供应到所述感光层来显影。 本发明还提供了一种用于制作原件的多个副本的方法,包括以下步骤:(1)以给定的顺序将具有在支撑体上的成像元件成像曝光(i)包含亲水性粘合剂的均匀的墨水排斥层 通过水解的四烷基原硅酸酯和(ii)包含重氮盐或重氮树脂的感光层交联; (2)将未经显影的如此获得的图像曝光成像元件安装在印刷机的印刷滚筒上; (3)在供应水性阻尼液体和/或向所述成像元件的所述感光层供应墨水的同时旋转所述印刷滚筒,以及(4)将油墨从所述成像元件传送到接收元件。
    • 10. 发明授权
    • Method for making a lithographic printing plate with frequency modulated
halftone dots
    • 制造具有调频半色调点的平版印刷版的方法
    • US5635318A
    • 1997-06-03
    • US542919
    • 1995-10-13
    • Johan Van Hunsel
    • Johan Van Hunsel
    • G03F7/00G03F5/00G03F7/07G03C8/28G03C5/08G03C8/06
    • G03F7/07G03F5/00
    • There is provided a method for making a lithographic printing plate according to the DTR-process from a printing plate precursor comprising on a hydrophilic surface of a support in the order given a layer of physical development nuclei and a silver halide emulsion layer from an original containing continuous tones comprising the steps of:frequency modulation screening said original to obtain screened data,image-wise exposing said printing plate precursor according to said screened data,developing a thus obtained image-wise exposed lithographic printing plate precursor by means of an alkaline processing solution in the presence of a developing agent and a silver halide solvent yielding a lithographic printing plate, characterized in that the frequency modulated halftone dot with the greatest main dimension on said lithographic printing plate has a main dimension of more than 21 .mu.m.
    • 提供了一种根据DTR方法从印版前体制备平版印刷版的方法,所述平版印刷版原版包含在载体的亲水表面上,其顺序为给定一层物理显影核和卤化银乳剂层,原始物含有 连续色调包括以下步骤:对所述原稿进行频率调制筛选以获得筛选数据,根据所述筛选数据对所述印版前体进行成像曝光,通过碱处理溶液显影如此获得的图像曝光的平版印刷版原版 在显影剂和产生平版印刷版的卤化银溶剂的存在下,其特征在于在所述平版印刷版上具有最大主要尺寸的调制半色调点的主要尺寸大于21μm。