Yellow Ink issues

[heyskull]

I have a Roland VersaEXPRESS RF-640 4 colour machine running Nazdar inks.
I have posted this on the Roland forum but I am trying to see if anyone has similar issues?
My print test is perfect.
It is as if their is an issue with the Yellow ink as it seems to not mix well with other colours and is worse when magenta is mixed to make red.
I have been told by another supplier that this only happens when the surface tension of the two inks are different.
Is this something anyone else has come across?

Thanks
SC

 

[weyandsign]

What are your heat settings?

 

[Solventinkjet]

Higher heat settings might help. Looks like when heat is too low.

 

[damonCA21]

How does the yellow print on it's own? Try printing out a 6 inch solid block of yellow and see how it looks. This will let you know if it is a problem with the vinyl. It could be a bad batch of ink or as others suggest it could be the heater setting is too low and the inks are not blending properly

 

[White Haus]

Higher heat settings might help. Looks like when heat is too low.

Agreed. Looks like ink isn't curing/drying properly at first glance.

 

[heyskull]

When printing Yellow on its own it prints perfectly but when it is touching another colour it can bleed and make the image look blurry.
Heat settings are as high as they go, even when I alter them it is not making any difference.
I agree it is a bad batch of ink but the supplier is not accepting responsibilty (as usual with suppliers).
Mixing Black Cyan or Magenta has no issues and only becomes one when Yellow is used together.

SC