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    • 76. 发明授权
    • Process of preparing planographic printing plate
    • 制备平版印刷版的工艺
    • US07316892B2
    • 2008-01-08
    • US11077256
    • 2005-03-10
    • Yasuhiko TakamukiToshiyuki Matsumura
    • Yasuhiko TakamukiToshiyuki Matsumura
    • G03F7/03G03F7/021
    • G03F7/027G03F7/0212G03F7/0388
    • Disclosed is a process of preparing a planographic printing plate from a light sensitive planographic printing plate material comprising a hydrophilic support and provided thereon, an image formation layer containing (A) a polymerization initiator selected from a hexaarylbisimidazole compound and a diazo resin, and (B) an alkali soluble resin with an acid value of 5 to 200 having an acryloyl group or a methacryloyl group, the alkali soluble resin being obtained by reacting a vinyl copolymer having a monomer unit derived from acrylic acid or methacrylic acid with an epoxy compound having an acryloyl group or a methacryloyl group in the molecule, and, the process comprising the steps of imagewise exposing the light sensitive planographic printing plate material to ultraviolet laser, and removing an image formation layer at non-exposed portions with an aqueous alkali solution to form an image.
    • 公开了一种从包含亲水性载体并在其上提供的光敏平版印刷版材料制备平版印刷版的方法,包含(A)选自六芳基双咪唑化合物和重氮树脂的聚合引发剂的成像层和(B )具有丙烯酰基或甲基丙烯酰基的酸值为5〜200的碱溶性树脂,所述碱溶性树脂是通过使具有来自丙烯酸或甲基丙烯酸的单体单元的乙烯基共聚物与具有丙烯酸或甲基丙烯酸的环氧化合物 丙烯酰基或甲基丙烯酰基,并且该方法包括以下步骤:将光敏平版印刷版材料成像曝光于紫外线激光,并用碱水溶液除去未曝光部分的图像形成层,以形成 图片。
    • 79. 发明申请
    • Increased sensitivity, UV imageable photographic elements
    • 增加灵敏度,可UV成像摄影元素
    • US20050277051A1
    • 2005-12-15
    • US10857990
    • 2004-06-01
    • Stephan PlatzerHoward Fromson
    • Stephan PlatzerHoward Fromson
    • B41C1/10B41M5/36G03C1/52G03C5/18G03F7/021G03F7/038
    • G03F7/038G03C1/52G03F7/0217
    • The invention provides a photosensitive element which comprises a sheet substrate having coated thereon an actinic radiation sensitive imageable layer. The imageable layer has an admixture an aromatic diazonium salt having an anion, and having a weight average molecular weight of from about 15,000 to about 35,000. The aromatic diazonium salt is present in an amount of from about 1 weight % to about 9 weight % of the imageable layer. The composition also has a solid epoxy polymer having a weight average molecular weight of from about 2,000 to about 8,000. The coating weight of the imageable layer per area is preferably from about 0.3 to about 0.9 g/m2. The imageable layer is sensitive to low levels of actinic irradiation, namely, from about 1 to about 40 mj/cm2 in the UV region. The sensitivity is increased by heating the imageable layer before development. After imagewise exposure and aqueous development, an imaged element is obtained, which is useful for lithographic printing.
    • 本发明提供了一种感光元件,其包括其上涂覆有光化辐射敏感可成像层的片状基材。 可成像层具有具有阴离子的芳族重氮盐的混合物,其重均分子量为约15,000至约35,000。 芳族重氮盐的存在量为可成像层的约1重量%至约9重量%。 该组合物还具有重均分子量为约2,000至约8,000的固体环氧聚合物。 每个面积的可成像层的涂层重量优选为约0.3至约0.9g / m 2。 可成像层对于低水平的光化辐射敏感,即UV区域中约1至约40mJ / cm 2。 通过在显影前对可成像层进行加热来提高灵敏度。 在成像曝光和水性显影之后,获得成像元件,其可用于平版印刷。