Offset printing paper to improve speed and quality tips
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There are some suggestions when printing thin paper with an offset press:
1) When knocking paper, the method of thin paper and thick paper (100-350g/m2) is different. The thin paper knocking should pay attention to even and flat knocking. The smaller the interval between the paper-cutting segments, the better the spacing, so as to avoid causing Crumpled paper. Generally, for paper that is eager to be printed on the machine, just tap the tip and keep the mouth flat so that the paper can be smoothly fed.
2) The paper presser foot is smaller than the thick paper, and the pressure is usually about 5mm.
3) The paper feed wheel should be lightly adjusted as much as possible. When the paper passes, the paper wheel can smoothly roll, reducing the resistance and preventing the paper from curling.
4) For the better control system of light control system, such as KBA, Komori series offset printing machine, etc., it is necessary to clean the paper ash at the mouth in time, preferably one shift is cleaned once, so as not to affect the light control sensitivity, resulting in the machine stop for no reason. . Because, for thin paper printing, the light control function is more important.
5) The temperature and humidity of the printing workshop should be consistent with the paper library to prevent the paper from fringing or shrinking, which affects the smooth printing and paper feeding. For qualified enterprises, air conditioners or air humidifiers can achieve better results. If there are no conditions, watering and airing can be used to improve the printability of the paper.
6) When printing thin paper, the printing speed is slightly faster, and the delivery system and paper feeding system will be more stable.
Generally speaking, the machine with a top speed of 10,000 impressions/hour has a speed of about 6500 impressions/hour. A high speed machine of 15,000 impressions/hour has a printing speed of 9500 impressions/hour.