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    • 28. 发明公开
    • FLEXOGRAPHIC ELEMENT AND METHOD OF IMAGING
    • 密度影像元素和成像方法
    • EP2359190A2
    • 2011-08-24
    • EP09771615.3
    • 2009-12-01
    • Eastman Kodak Company
    • SANGER, Kurt, MichaelVERES, Janos
    • G03F1/00G03F7/095G03F7/20
    • G03F7/095G03F7/202G03F7/2022
    • A relief (or flexographic) printing precursor has first and second radiation-sensitive layers, or a plurality of radiation-sensitive layers. The first radiation-sensitive layer is sensitive to a first imaging radiation having a first λ
      max . The second radiation-sensitive layer is disposed on the first radiation-sensitive layer and is sensitive to a second imaging radiation having a second λ
      max that differs from the first λ
      max by at least 25 nm. An infrared radiation ablatable layer can be present and is opaque or insensitive to the first and second imaging radiations and contains an infrared radiation absorbing compound. These relief printing precursors can be used to prepare flexographic printing plates, cylinders, or sleeves where the ablatable layer is used to form an integral mask on the element. Use of the invention provides a relief image without any loss in the strength of the small dots and can be carried out using multiple irradiation steps using the same apparatus.
    • 浮雕(或柔版)印刷前体具有第一和第二辐射敏感层或多个辐射敏感层。 第一辐射敏感层对具有第一λmax的第一成像辐射敏感。 第二辐射敏感层设置在第一辐射敏感层上并且对具有与第一λmax相差至少25nm的第二λmax的第二成像辐射敏感。 可以存在红外辐射可烧蚀层并且对第一和第二成像辐射不透明或不敏感,并且包含红外辐射吸收化合物。 这些凸版印刷前体可用于制备柔性版印刷板,圆柱体或套筒,其中可烧蚀层用于在元件上形成整体式掩模。 本发明的使用提供了没有任何小点强度损失的浮雕图像,并且可以使用相同的设备使用多个照射步骤来执行。
    • 30. 发明公开
    • FLEXOGRAPHIC PRINTING ORIGINAL PLATE
    • FLEXOGRAFISCHE DRUCKORIGINALPLATTE
    • EP2284612A1
    • 2011-02-16
    • EP09750292.6
    • 2009-01-21
    • Toyo Boseki Kabushiki Kaisha
    • YOSHIMOTO, KazuyaKAWAKAMI, TetsumaMUNEKUNI, YasuyukiMOTOI, KeiichiYAWATA, YukimiWADA, Toru
    • G03F7/095B41N1/12G03F7/00G03F7/11
    • B41N1/12B41C1/05B41M2205/14G03F7/092G03F7/202
    • The present invention aims to provide a flexographic printing original plate where, although it is a flexible aqueous developing plate, reproducibility of fine lines is good. A flexographic printing original plate which is a photosensitive printing original plate where at least (A) a supporting member, (B) a photosensitive resin layer, (C) a protective layer for preventing the polymerization inhibition due to oxygen in the photosensitive resin layer and (D) a heat-sensitive mask layer are successively layered, characterized in that , the photosensitive resin layer (B) is a layer which is able to be developed by water, Young' s modulus of the protective layer (C) is 4 MPa to 35 MPa, layer thickness of the protective layer (C) is 0.2 µm to 2.0 µm and Young's modulus (MPa) and layer thickness (µm) of the protective layer (C) satisfy the following formula 1: 1 ≤ Youngʹs modulus × Layer thickness 2 ≤ 18
    • 本发明的目的在于提供一种柔版印刷原版,尽管它是柔性水性显影板,细线的再现性良好。 作为感光性印刷原版的柔性版印刷原版,其中至少(A)支撑构件,(B)感光性树脂层,(C)防止感光性树脂层中的氧引起的聚合抑制的保护层和 (D)感光掩模层依次层叠,其特征在于,感光性树脂层(B)为能够通过水显影的层,保护层(C)的杨氏模量为4MPa 至35MPa,保护层(C)的层厚度为0.2μm〜2.0μm,保护层(C)的杨氏模量(MPa)和层厚(μm)满足下式1:1‰杨氏模量× 层厚2‰¤18