"Grainy" look on solid colors

[Quix]

Hello to all.
I own an HP9000 and I print on FlexiSign and/or Photoprint server 8.
I wonder if you know which setting I should use for printing solid colors: Printed photos look great, but with all vector images I get a "grainy" look; specially on light colors.
I wonder if that's all I can expect from my 14pl printheads; or maybe I´m using a bad configuration.
I hope someone can help.

 

[mnapuran]

I've seen this problem before quite a bit..... one of two things below should fix it (although maybe not ideal)

1) Try a different print profile (or tweak your current one)
2) Export your vector image full res and output as an uncompressed JPG, then print the JPG

Also had option 2 above solve color inaccuracies when printing from vector