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In the fluctuation primary factor decision method of the paper in the printer which judges the fluctuation
In the fluctuation primary factor decision method of the paper in the printer which judges the fluctuation
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机译:在判断波动的打印机中纸张波动的主要因素决定方法中
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摘要
PROBLEM TO BE SOLVED: To provide a method and device for determining variable factors of paper in a printing machine configured to enable a user to grasp the cause when a printing failure or paper break of printing paper occurs in the printing machine.;SOLUTION: Printing-condition signals such as a print speed signal and a tension signal or the like by a paper feed roller 2 or the like are configured to impart tension to printing paper P running on a printing part 1 and to specify printing conditions for stable running. The printing-condition signals are inputted to a signal processing device 10 so as to transform the signals into power spectra by executing the FFT. An edge sensor 6 arranged on the exit side of the printing part 1 captures displacement of both ends of the printing paper P. A data processing device 12 is inputted with the end information and calculates a change in paper width and a meandering state so as to transform the data into power spectra by executing the FFT. When each variation cycle obtained from the power spectra of the end-information signal of the printing paper matches the variation cycle of any one of the printing-condition signals with each other, it is determined as a variation in factors of the printing machine. In the case other than that, it is determined as a variation in factors of the printing paper.;COPYRIGHT: (C)2012,JPO&INPIT
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