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    • 10. 发明授权
    • Printing stencil and a method for preparation thereof
    • 印刷模版及其制备方法
    • US06225026B1
    • 2001-05-01
    • US09177074
    • 1998-10-19
    • Lior LifshitzMurray FigovHannoch Ron
    • Lior LifshitzMurray FigovHannoch Ron
    • G03F900
    • G03F7/0015B41C1/148B41N1/24G03F7/12
    • It is an object of the present invention to provide a printing stencil and a method for its preparation. There is thus provided, In accordance with a preferred embodiment of the present invention, a printing stencil comprising a porous stencil carrier layer, preferably of a non-woven tissue, which is impregnated with a solid or liquid radiation curable material. The printing stencil may further comprise a mask laid upon or integral to the stencil layer for defining areas transparent and areas non transparent to curing irradiation. There is thus also provided, in accordance with a preferred embodiment of the present invention, a method for the preparation of a printing stencil, said printing stencil comprising a stencil carrier layer and a stencil layer, which is impregnated with a radiation curable material. The method comprises the step of selectively irradiating the stencil layer with curing radiation, thereby forming ink permeable and ink impermeable areas, said ink permeable areas consisting of uncured material and said ink impermeable areas consisting of cured material. The method may further comprise the step of creating a mask on the stencil layer prior to irradiating it with curing radiation, for selectively blocking curing radiation by defining, on the printing stencil, areas exposed and areas unexposed to curing radiation. The printing stencil of the present invention may be used in stencil duplicating processes for printing fine details, graphic elements and color printing at a higher quality than existing stencils, approaching offset lithographic standards.
    • 本发明的目的是提供一种印刷模板及其制备方法。 因此,根据本发明的优选实施例,提供了一种印刷模版,其包括浸渍有固体或液体可辐射固化材料的多孔模版载体层,优选为非织造织物。 印刷模版可以进一步包括放置在模板层上或与模版层一体的掩模,用于限定透明区域和对固化照射不透明的区域。因此,根据本发明的优选实施方案还提供了一种制备方法 的印刷模版,所述印刷模版包括用可辐射固化材料浸渍的模板载体层和模板层。 该方法包括以下步骤:用固化辐射选择性地照射模板层,从而形成透墨和不透墨区域,所述油墨渗透区域由未固化材料组成,所述不透油区域由固化材料组成。所述方法还可包括 在用固化辐射照射之前在模板层上形成掩模,通过在印刷模版上限定暴露的区域和未暴露于固化辐射的区域来选择性地阻挡固化辐射。本发明的印刷模版可用于模板复制 以比现有模板更高的质量打印精细细节,图形元素和彩色打印的过程,接近胶版印刷标准。