发明授权
- 专利标题: Presensitized plate useful for making lithographic printing plate and method for making lithographic printing plate therefrom
- 专利标题(中): 用于制备平版印刷版的预感板和从其制造平版印刷版的方法
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申请号: US10055002申请日: 2002-01-25
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公开(公告)号: US06811950B2公开(公告)日: 2004-11-02
- 发明人: Shunichi Kondo , Fumikazu Kobayashi , Mitsumasa Tsuchiya
- 申请人: Shunichi Kondo , Fumikazu Kobayashi , Mitsumasa Tsuchiya
- 优先权: JP2001-030976 20010207
- 主分类号: G03F7038
- IPC分类号: G03F7038
摘要:
The present invention relates to a presensitized plate useful for making a lithographic printing plate comprising an intermediate layer and a photopolymerizable photosensitive layer on an aluminum substrate in this order, wherein the roughness of a surface of said aluminum substrate (Ra) is in the range of 0.2 to 0.55 &mgr;m and the intermediate layer comprises a polymer compound comprising at least one monomer unit having a sulfonic acid group and a method for making a lithographic printing plate by imagewise exposing the presensitized plate described above and developing the imagewise exposed presensitized plate with a developer comprising an inorganic alkali salt and a nonionic surfactant comprising a polyoxyalkylene ether group. The presensitized plate or the method of the present invention provides a lithographic printing plate showing good contrast between an image area and non-image area, no background contamination during printing, good stability with time and good printing durability.
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