Roland VG-640 magenta issue

[devontug]

The magenta is acting weird it’s not printing solid and it’s having a misting look on anything with magenta … dispute new printheads change … any ideas?

 

[petepaz]

what's your test print look like. what inks are you running in that VG, the newer type 2 inks?
tough to fix anything in those models because they locked us out so really only a tech can do work on them

 

[devontug]

what's your test print look like. what inks are you running in that VG, the newer type 2 inks?
tough to fix anything in those models because they locked us out so really only a tech can do work on them

Roland TR2 inks
The test print

 

[devontug]

what's weird the other colors are solid magenta is the only color not printing solid.

 

[devontug]

This is how the magneta looks on the Roland test print

 

[d fleming]

Many moons ago omg sieko carts had trouble with magenta clogging nozzles. Had to do with the solids. I changed to nazdar carts and it magically cleared up. Ran nazdar inks til that sucker finally reached end of service life. Not saying that is what is happening but just sayin'.

 

[petepaz]

not sure what you can actually do on that machine. we had one of the original truvis VG540 machines and it was a piece of crap. had it for 4 years and it only worked for like 1.5 years ended up trading it in, long story but i really wasn't able to work on that machine. our older machines i could pull ink with a syringe or change cap tops. that's what i would do first if you are able to do it.

 

[weyandsign]

Did you change the cap tops when you changed the heads? Did you try shaking the ink pouch? Do you see any air in the ink lines? What if you print uni-directional, is it any better?

 

[devontug]

Did you change the cap tops when you changed the heads? Did you try shaking the ink pouch? Do you see any air in the ink lines? What if you print uni-directional, is it any better?

Yes I changed the captops and unidirectional made no difference

 

[weyandsign]

Try doing 2-3 damper fills in a row. Make sure you have enough ink

 

[Joe House]

You've definitely got a deflected nozzle there. Roland should cover a new printhead for 90 days if proper maintenance is being done and you're using Roland inks that haven't expired. Get back to the dealer that installed it and see what they'll do for you.

Good Luck

 

[devontug]

solved it third party ink tr2 pouch had the wrong ink formulation ..... did a pump up and replace with correct ink and its now working great... thanks all for the brain storming....