In the printing process, the printing plate with dirty faults often occurs. Under normal circumstances, the problem can be solved well by changing the water jacket or related adjustments, but in the case of tight schedule, some emergency methods can also be used for processing. .
Once, a 08 machine that was being printed normally had a dirty fault on the outside of the printed sheet. Because the batch was going to be more urgent at the time, the operator used the method of artificially adding water to the dirty part, but it could be renewed with dirty problems soon. Appeared, this repeated several times, and finally had to stop processing. After inspection, it was found that there was no problem in the adjustment of the water roller, and it was restarted. After careful observation, it was concluded that the water jacket should be used for too long and needs to be replaced, but considering the emergency, it is necessary to delay the time. So no such method has been taken. The dirt is thinned due to long-term wear of the water velvet sleeve, resulting in uneven water on the printing plate. In response to this situation, the operator used the sticker on the back of the printing plate (40g/m2 thin paper), which place is dirty where to stick, which alleviated the above situation, and the effect was obvious after starting up. The above method may be used if the construction period is tight, but the normal state of the machine should be restored as soon as possible.
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