Printing machine maintenance method
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Assume that the hardness of the roller on the printing press is too large, which may lead to a large increase in the tone value, uneven dot density, increase of mechanical ghosting, failure of color control, uneven edge of the dot, blurring of the dot, granulation of the halftone pattern, and field The printing effect of the color block is not satisfactory. Therefore, the printer operator must ensure the cleanliness, ink absorbency and softness of the drum.
The drum hardens when exposed to ultraviolet light or in an environment that is exposed to high temperatures and susceptibility to oxidation. Therefore, it is better to store the rollers in a dark place and keep them away from heat sources and electric motors.
Below, we give you a suggestion: wash once a week with decalcification solution or hot water containing 15% vinegar. At the weekend, the drum was thoroughly cleaned with an ink roller cleaner and the drum was rinsed again on Monday morning. If possible, try to avoid using chemicals on the rollers and never use steel pads. It is best to remove all the rollers on the press every other quarter for a manual cleaning, while at the same time cleaning the brackets and frames of the press. This is a daunting task, but as long as you work hard, you will be able to see the disappearance of stains and the improvement of print quality.