发明申请
- 专利标题: Printing press with mechanical development of imaged plate
- 专利标题(中): 印刷机与成像板的机械开发
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申请号: US12928627申请日: 2010-12-15
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公开(公告)号: US20110088575A1公开(公告)日: 2011-04-21
- 发明人: Howard A. Fromson , William J. Ryan , William J. Rozell
- 申请人: Howard A. Fromson , William J. Ryan , William J. Rozell
- 主分类号: B41F1/18
- IPC分类号: B41F1/18
摘要:
On-press development of an imaged printing plate on a plate cylinder, in which ink is applied by an ink form roll, a blanket roll is in contact with the plate, a rubber roll is opposed to the blanket roll, and printable media passes between the blanket roll and the rubber roll. The plate comprises a substrate carrying an imaged coating, in which nonimage areas have cohesion C1, adhesion to the substrate A1, and adhesion to the applied ink A3 and image areas have cohesion C2, adhesion to the substrate A2, and adhesion to the applied ink A4. The ink has cohesion C3 and adhesion A5 to the blanket roll. The nonimage areas have adhesion A6 to the printable medium and the ink has adhesion A7 to the medium. The adhesions and cohesions are such that the blanket roll pulls the ink from the plate and the ink pulls the nonimage areas from the substrate as undissolved particles that are transferred by the blanket with the ink to the printable media.
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