In the offset printing process, the appearance of ink sticks is generally troublesome. The causes of the occurrence of defection are various and the situation is sometimes complicated. For one reason, there are also many kinds of unfavorable conditions that exist together; there are wear and tear caused by the parts and components of the equipment, and there are also misoperations and adjustments. Moreover, there are not many opportunities for the general ink bar to appear in production. It is difficult for the average operator to accumulate much experience in this area.
However, after careful analysis, we will find that the production and elimination of ink bars still have certain rules to follow.
1. The appearance of some parts of the ink bars is lighter than normal parts, and the general problems may be larger on the water roller.
2. When ink at the position of the ink stick is dark, priority is given to whether the ink roller mechanism is normal.
3. When the ink bar is more noticeable at the mouth of the mouth, when the dragging point is more and more inconspicuous, priority should be given to the water roller or the ink roller.
4. When the full version has dark and light striations with a width of about 1 cm, it may be a problem with the gear (most likely due to gear wear or problems with gear spacing).
5. When the width of the ink bar is relatively wide and the position is relatively fixed on each print, it may be due to wear of the roller bearings or excessive roller pressure.
6. When the ink bar is relatively wide, its production may be related to the vibration of the machine.
7. The appearance of ink bars, if they are very regular, may to a large extent be caused by the periodic vibration of a certain institution. Based on the spacing and position of the ink bars, further judgments can be made.
8. If the appearance of the ink stick is completely irregular, it may be caused by the loosening of bolts or the loosening and abrasion of the bolts in some places where they need to be tightened.
In fact, after understanding the causes and laws of the appearance of ink bars, the problem of ink bars in production will be solved much easier.
In fact, treating diseases is not as good as preventing diseases. In daily production, the emphasis is placed on strengthening the maintenance and the maintenance of equipment. Scientifically and rationally using and adjusting the machines to prevent and avoid opportunities for ink bars is the best way to deal with problems.