Metalic gold ink problem

[Data]

Get on to your suppliers and get some UV two pack metallic paste. Cant really advice the exact amount as its been sometime since ive done it but its something like half again to double what the supplier will advise, 10-20% rings a bell. Plus add driers.

Dont worry what anyone says (UV & conventional), just do it, keep your damp to minimum.

This allows you to obtain correct colour but with about half the film

 

[turbotom1052]

Turn you IPA right up to maximum and make sure the ink and rollers are as cold as possible (start of production) Hope this helps

heid,
theres a long standing industry trend these days to get away from the use of ipa, at least in the U.S. there is. I believe that ipa is often used as a crutch to compensate for either a poorly maintened press or a lack of pressmanship. Ive worked in plants that had no ipa inhouse becuase of just that reason. Its my feeling that if ipa is available then it should only be used when all other alternatives have been exhausted. If you cant print without ipa (even when printing gold ink) its an indication of something else wrong. Using ipa when printing any metallic is in my opinion the worst time to add ipa to the fountain solution. If your having a problem printing gold ink up to full strenghth then perhaps you need to consider another alternative. My first thought is to take a step up in the pms book. Lets say your looking to print 873. Put 874 in the fountain and you will be able to run the gold at a run a thinner ink film also. the other option id suggest is that you run a double hit of the gold if you have an open unit. You need to remember that when Pantone prints the pms book they print all the swatches as dry solids. They dont have to contend with the effects the fountain solution has on an ink. They can pump up the ink as high as needed to arrive at density. Add water to the equation and the potential for dry ups and other issues becomes a concern. Add ipa and you begin to create something like a snowball running downhill. The ipa acts as a solvent to the ink, in order to maintain ink strenghth you add more ink, in order to counteract the effects of more ink you increase the water feed, now the print looks washed out!!!! it just goes on and on like that. You might get away with it for a really short pressrun but if you running anything over 1500 sheets or so ill bet your gonna wind up chasing your tail. As a matter of routine i begin a job with any metallic ink trying to choose an ink with good strenghth so i can avoid these very issues.