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EXPANSION/CONTRACTION AMOUNT MEASURING APPARATUS FOR PRINTING SHEET PRINTED USING OFFSET ROTARY PRESS AND EXPANSION/CONTRACTION PREVENTING METHOD FOR PRINTING SHEET USING THE SAME
EXPANSION/CONTRACTION AMOUNT MEASURING APPARATUS FOR PRINTING SHEET PRINTED USING OFFSET ROTARY PRESS AND EXPANSION/CONTRACTION PREVENTING METHOD FOR PRINTING SHEET USING THE SAME
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机译:胶印机用胶印机旋转膨胀/收缩量的测量装置和胶印机的膨胀/收缩防止方法
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摘要
PROBLEM TO BE SOLVED: To provide an apparatus capable of measuring online during printing the expansion/contraction amount of a printing sheet printed using an offset rotary press, and an expansion/contraction preventing method for the printing sheet using the device.;SOLUTION: The expansion/contraction amount measuring apparatus for a printing sheet printed with an offset rotary press is provided with a first sensor for measuring the width direction size of a printed printing sheet (or printing sheet) on the downstream side of a printing section in the offset rotary press, a second sensor for measuring the width direction size of the dried printing sheet on the downstream side in the press, a computing unit for inputting respective sizes measured by the first and the second sensors to compute the expansion/contraction amount by the size difference, and a display apparatus displaying computed data. The sensor for measuring the size of the width direction of the printing sheet is a sensor selected from the sensors employed by an image sensor and laser size measuring instrument.;COPYRIGHT: (C)2005,JPO&NCIPI
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