Abstract
a proper printing pressure is a basic condition for realizing offset printing and is also quality guarantee of printed products. The printing pressure should be adjusted on time according to different thickness of paper and requirements. At present, the printing pressure is mainly tested statically and pre-commissioned by experiences, so it can not reflect size of the real printing pressure and no dynamic commissioning can be carried out. In this paper, the hoho-spectrum analysis method was adopted to analyze the vibration displacement signals of cylinders, so as to obtain central displacement of two cylinders and distance and to indirectly obtain pressure between the two cylinders. The test results showed that the method could test the printing pressure effectively and dynamically.
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