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公开(公告)号：US06207287B1
公开(公告)日：2001-03-27
申请号：US09126422
申请日：1998-07-30
IPC分类号： B32B1504
CPC分类号： B41N1/083 , B41N3/03 , B41N3/036 , Y10S428/913 , Y10T428/265 , Y10T428/31678
摘要： A dummy plate is provided for offset printing which essentially consists of a plate-, sheet- or band-form, mechanically and/or electro-chemically roughened, anodically oxidized and optionally hydrophilized aluminium support and a non-photosensitive, water-soluble protective layer applied thereto, characterized in that the layer contains a water-soluble organic compound which contains at least one OH- or NH-acidic group having a pKa value of ≦8 as acid or salt, and has a layer thickness which is smaller than the average roughness ra of the support material, determined by optical means. Even after extended storage at elevated temperature, the dummy plate can easily be used without an additional development step and exhibits no tendency to stick.
摘要翻译： 提供了用于胶版印刷的虚拟板，其基本上由板，片或带形机械和/或电化学粗糙化的阳极氧化和任选亲水化的铝载体和非感光性水溶性保护层 其特征在于，该层含有水溶性有机化合物，其含有pKa值<= 8的至少一种OH-或NH-酸性基团作为酸或盐，并且具有小于 通过光学手段确定支撑材料的平均粗糙度ra。 即使在升高的温度下延长储存后，也可以容易地使用虚拟板而不需要额外的显影步骤，并且不会发生粘附。
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公开(公告)号：US6048624A
公开(公告)日：2000-04-11
申请号：US126422
申请日：1998-07-30
摘要： A dummy plate is provided for offset printing which essentially consists of a plate-, sheet- or band-form, mechanically and/or electro-chemically roughened, anodically oxidized and optionally hydrophilized aluminium support and a non-photosensitive, water-soluble protective layer applied thereto, characterized in that the layer contains a water-soluble organic compound which contains at least one OH- or NH-acidic group having a pKa value of .ltoreq.8 as acid or salt, and has a layer thickness which is smaller than the average roughness ra of the support material, determined by optical means. Even after extended storage at elevated temperature, the dummy plate can easily be used without an additional development step and exhibits no tendency to stick.
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