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Method and apparatus for sensing a register discrepancy in a multi-color printed item, and register control system and register marks
Method and apparatus for sensing a register discrepancy in a multi-color printed item, and register control system and register marks
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机译:用于检测多色印刷品中的套准差异的方法和装置,套准控制系统和套准标记
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摘要
A method for sensing a register discrepancy (r) in a multi-color printed item, the position of at least one register mark (1, 1′) that is associated with one color being sensed with respect to the position of at least one register mark (2, 2′) that is associated with at least one further color, and any density register discrepancy (r) using a measurement window being ascertained from discrepancies in the actual relative position (3) with respect to the reference relative position (4). The invention, furthermore, concerns an apparatus, a register control system, and register marks (1, 1′, 2, 2′).
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