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Yellow overspray around text and image

4847 Views 12 Replies 8 Participants Last post by  carllark
On Anajet Sprint:
A yellow overspray around text and images.
What's the problem?
1 - 13 of 13 Posts
Check the height of the platen to make sure that it is at the proper distance. Think of it like a flash light that is moving farther way from the wall. You need to be at the proper distance from the bottom of the print head to the top of the garment or overspray can occur. If you are not sure what the proper distance is, then try printing in unidirectional mode.

If that is not the issue, try reprinting a piece of artwork that you have printed fine in the past and see if it has the same overspray problem. If not, then there might be something in the artwork. If it does, you might want to clean the bottom of the print head to make sure there is not a piece of lint attached to the bottom of it causing some miss directional firing.

Hope that helps. Maybe others can throw out some potential solutions.

Mark
like Mark said, make sure everything is clean first. then check that the metal rails that the platen slides on is level. then check that your platen is level front to back and side to side. once all this checks out, perform a nozzle check. if your nozzle check is perfect then you are left with the distance from platen to print head. use the gauge block AnaJet gave you to get the proper height. the gauge block is about 7/8ths or 14/16ths of 1 inch.
Once the platten is at the proper distance AND completly level side to side,front to back, check out the nozzle pattern on paper. It's rather difficult on yellow, but if you print on the smoked plexy of your printboard you may see it better. The pattern should be the same in all colors and be uniform.

If it looks "scattered" but all the lines from left to right are there, then you have pigment settling on and around the jets. This is a symptom that there is a lot of buildup in the bottom of your dampers and in your lines. Flushing the dampers (or replacing with a clean set) and gently flushing the head from nipple to nozzle plate will normally clear this up. Make sure that the capping station and wiper are very clean and draing properly.
Thank you all,

if have try to print a word in:

cyan: NO problem
Magenta: No problem
black: NO problem
red: overspray with yellow
green: overspray with yellow

Pierke
Thank you all,

if have try to print a word in:

cyan: NO problem
Magenta: No problem
black: NO problem
red: overspray with yellow
green: overspray with yellow

Pierke
Red is a combo of magenta and Yellow
Green is a combo of cyan and yellow

Yellow is indeed the problem component that is not aligned or is "scattered" off of the needed pattern. I would focus your attention on that channel.
2
Hello Pierke,

I think that I have the same problem.

Is your overspray like this ?



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The edges of your graphics are crisp, so your head height is good. I would do a nozzle test and see if you have yellow printing where it shouldn't be. If so, then you have a delaminated print head.
If so, then you have a delaminated print head.
I've seen this happen either because there is buildup(high pigment load) and partial blockage of the nozzles or the dampers. It can also happen if the "thickness" of ink is off due to settling(not shaking carts or very low ink usage) It is difficult to see on the yellow channel, but a light grey paper or the smoke surface of the table will reveal more info. If the pattern is all there but just scattered, gently push cleaning fluid through the nozzle until you see a strait "fan". While you have the damper disconnected, Shake the carts and use a syringe to mix the yellow in the line and damper by drawing and pushing back to the cart. after this, do a head clean. This will pull ink down to the nozzle again. Do a nozzle check to verify the pattern. Perfect pattern= good print

Again, I have seen this before and have been able to remedy it. In 5 years, I have not see a delaminated head, so I cannot discribe what it would look like. If you need to, post a picture of the nozzle check.
Sorry, I should have been clearer in what I was saying. When you print the nozzle test, if you have bands of yellow printing where they shouldn't be, then it would be a delaminated head. If it's just sprayings here and there, the nozzles would most likely need to be cleaned.
Hello JeridHill & zoom_monster,

First of all, thank you for your answers and your help. I really appreciate it.

The next day of my post, I did nozzle check >> The results weren't good.

So I did 3 Print Head Clean and a new nozzle check >> The results were better.

I did a Yellow Print Purge, and a new nozzle check >> The results were correct.

From that moment, I made more than 20 t-shirts without any problem.

Thanks again !
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Did you get this issue fixed? I think I'm having the exact same issue
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