Dear all, I'm currently facing a problem which I don't have enough experience to solve.
We are using Goss Community SSC, which is only 18 months old, printing on CMYK order. When we replace 2 new blankets on black, which is the highest level of a 4 HI tower, the register of K will drift during production in the range of 10mm even we keep the press at constant speed. We did something before production and during production, and it's not improving. We had to put the used blankets back on, and everything running smooth and steady after that.
What I did after replacing the blankets are:
1, Put the impression on, and run for about 1000 copies, stop and re-tighten.
2, Repeat the step above for 2500 copies, and 4500 copies.
During production,
1, Maintain constant speed and adjust the register back in range.
2, Increasing the web tension step by step, until it was almost double than what they usually had.
3, Check the blanket height, tighten the blankets.
None of the job done above made things improve. Our machine is only 18 months old, impression setting was done by installer, blankets and packing are recommended and supplied by manufacturer.
Need opinions and suggestions from the experienced senior here, Thanks a lot.
We are using Goss Community SSC, which is only 18 months old, printing on CMYK order. When we replace 2 new blankets on black, which is the highest level of a 4 HI tower, the register of K will drift during production in the range of 10mm even we keep the press at constant speed. We did something before production and during production, and it's not improving. We had to put the used blankets back on, and everything running smooth and steady after that.
What I did after replacing the blankets are:
1, Put the impression on, and run for about 1000 copies, stop and re-tighten.
2, Repeat the step above for 2500 copies, and 4500 copies.
During production,
1, Maintain constant speed and adjust the register back in range.
2, Increasing the web tension step by step, until it was almost double than what they usually had.
3, Check the blanket height, tighten the blankets.
None of the job done above made things improve. Our machine is only 18 months old, impression setting was done by installer, blankets and packing are recommended and supplied by manufacturer.
Need opinions and suggestions from the experienced senior here, Thanks a lot.