Parsing the gravure printing ink deficiency

In gravure printing, often encounter this kind of situation, is flexible packaging factory employees in report a abnormal failure, often simply tells the abnormal phenomenon, rather than very accurately describe the details. Phenomenon, such as lack of ink, the lack of ink reasons is different also, solution natural is different also. Let's know the specific reason for the lack of ink and solution. 1. Trough the ink volume deficiencies caused by lack of ink & ndash; — This is the most common phenomenon of lack of ink, the specific reasons for this: one is the ink pump stop playing for the ink; Second, the ink groove for fall, lead to ink a lower; Three is the ink itself is not high, speed up production as a result of rapid operation after a high enough. The solution: one is the repair ink pump, to make it back to normal play ink; 2 it is rolled high ink tank and prevent falling again, make a normal ink; 3 it is rolled high ink tank, make a match the speed of ink. 2. Impression cylinder pit caused by lack of ink & ndash; — The exact reasons for this phenomenon: one is magenta impression cylinder pits; The second is magenta version plate layout is convex. The solution: one is the increase in magenta impression cylinder to be solved, if the fault is still there, need to change the impression cylinder; 2 it is to increase the impression cylinder pressure and slow down production, such as the fault is still there, need to stop the replacement for version. 3. A highly undeserved cause lack of ink ink tank ink & ndash; — The cause of this phenomenon: one is ready to work when the ink slot position rises high, cause the ink ink dross of sediment at the bottom of the groove touch plate, scrape off the part by; Second, scraper back out of paper is too long, plus the ink tank on the high side, causing paper has curly, curly paper intermittent touch plate, scrape off the part of the graphic. The solution: it is appropriate to reduce ink tank ink, 1 - as long as the plate submerged in Murray 37. 5 px; Second, downtime, proper cutting short blade back paper, it is advisable to make it not curly. 4. Missing text or pattern edge & ndash; — The causes of this phenomenon: one is the plate network congestion, didn't wipe out before starting the; Second, the ink or improper use solvent; Three is deviating from the normal after ink viscosity increases. The solution: one is dip in with dishcloth the solvent and household cleanser and before starting the clean version, version, when necessary, can be used to wash liquid washing version, make sure printing dot not blocked; 2 it is down to replace ink or solvent; Three is the measurement of ink viscosity on time, ensure the normal value of the ink viscosity, and avoid printing machines with unexpected romantic. 5. Foreign water or oil stains caused by lack of ink & ndash; — The causes of this phenomenon: one is the water vapor humidification machine is too large, with occasional water dripping onto the plate; Second, cooling water pipe is leaking, dripping onto the plate picture and text; Third, cooling water temperature setting is too low, lead to condensation water too much too heavy