发明授权
- 专利标题: Digital laser imagable lithographic printing plates
- 专利标题(中): 数码激光可成像平版印刷版
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申请号: US494617申请日: 1995-06-23
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公开(公告)号: US6143470A公开(公告)日: 2000-11-07
- 发明人: My T. Nguyen , Hui Zhu , S. Peter Pappas , Ken-ichi Shimazu , Robert W. Hallman
- 申请人: My T. Nguyen , Hui Zhu , S. Peter Pappas , Ken-ichi Shimazu , Robert W. Hallman
- 专利权人: Nguyen; My T.,Zhu; Hui,Pappas; S. Peter,Shimazu; Ken-Ichi,Hallman; Robert W.
- 当前专利权人: Nguyen; My T.,Zhu; Hui,Pappas; S. Peter,Shimazu; Ken-Ichi,Hallman; Robert W.
- 主分类号: B41M1/08
- IPC分类号: B41M1/08 ; B41C1/10 ; B41N1/14 ; G03F1/00 ; G03F7/11
摘要:
Lithographic printing plates for wet or waterless offset printing are disclosed which can be imagewise exposed using a digitally controlled IR laser. The invention comprises a laser imagable lithographic printing plate comprising a substrate, a photosensitive coating on the substrate, and a water soluble laser ablatable top coating containing dyes or polymers that absorb infra-red, ultraviolet and visible light. Laminated transparent polymer films and/or peelable polymeric coatings films can be interposed between the coated substrate and a water soluble and/or organic solvent soluble laser ablatable top layer to augment plate production or image inscription on the plate.
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