发明申请
US20090002430A1 Measurement Field for Determining the Smearing Limit During Printing
有权
用于确定打印期间涂抹限度的测量范围
- 专利标题: Measurement Field for Determining the Smearing Limit During Printing
- 专利标题(中): 用于确定打印期间涂抹限度的测量范围
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申请号: US12147549申请日: 2008-06-27
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公开(公告)号: US20090002430A1公开(公告)日: 2009-01-01
- 发明人: Martin Gutfleisch , Axel Hauck
- 申请人: Martin Gutfleisch , Axel Hauck
- 申请人地址: DE Heidelberg
- 专利权人: HEIDELBERGER DRUCKMASCHINEN AG
- 当前专利权人: HEIDELBERGER DRUCKMASCHINEN AG
- 当前专利权人地址: DE Heidelberg
- 优先权: DE102007029929.1 20070628
- 主分类号: B41J29/393
- IPC分类号: B41J29/393
摘要:
A measurement field allows determining the smearing limit during printing, in particular during lithographic wet offset printing. The measurement field is arranged on a printing form, in particular a printing plate, which has printing, ink-carrying regions and nonprinting, dampening solution-carrying regions on its surface. A dampening solution-carrying property in the region of the measurement field is reduced by a nanoscopic coating (e.g., with amphiphilic molecules) or an unscreened, microscopic coating (e.g., a polymer coating) in comparison with the dampening solution-carrying property in the nonprinting regions of the surface of the printing form. The nanoscopic coating or the microscopic coating advantageously leads to a shifting of the smearing limit, that is to say to a displacement of the starting point of scumming, by the dampening solution requirement which is increased for scum-free printing within the region of the measurement field. Such a measurement field is thus advantageously used for the closed-loop control of a dampening solution supply.