Need Help Roland banding

[avdodooel]

Hi. I have this roland printer using eco solvent inks which is causing me some banding, more like ink dropout on various colors. I changed heads, new cap top, pump, dumpers. no luck. and i get this lines mostly on solid colors.Any help what to check maybe?Thanks

 

[avdodooel]

this one too

 

[C5 Service&Repair]

What machine, whats your nozzle check look like, whats your calibration test look like, and what profile. heat settings and material?

 

[ewded]

Use unidirectional printing and higher heat settings + low head speed and increase nr of passes. Brown is a very delicate color for any printer.

 

[avdodooel]

it is a roland fj-52 convert to eco solvent ink, this is no citylight paper and same on blueback billboard paper. No heat temperature since its paper. Nozzle check is ok, since printheads are new.

 

[avdodooel]

I tried uni directional, i tried from 720x720 to 1440x1400, still no change. It looks like magenta is droping out, coming again, but nozzle check is fine. If i print other picture, it looks like cyan is droping out, then another picture looks like yellow droping out....pump is new, caping is new.... no ideas...

When printing normal paper like citylight paper or blueback paper, should i use temperature?

 

[ewded]

Try slowing down printing. Paper needs a lot of ink, maybe your pump cannot keep up with the speed. You're printing to a coated surface not actual paper so you should definitely use the heater.

 

[avdodooel]

Try slowing down printing. Paper needs a lot of ink, maybe your pump cannot keep up with the speed. You're printing to a coated surface not actual paper so you should definitely use the heater.

This is a poster paper, which heat setting you might recommend?

 

[ewded]

This is a poster paper, which heat setting you might recommend?

I'd try 40C / 104F

 

[avdodooel]

I'd try 40C / 104F

this temperature on the platen where the printhead lays ink right? what about drying temperature?

 

[ewded]

I'd use the highest temp I can set, say 50c/122f

 

[ewded]

Is the color right compared to you monitor? If it was a temperature problem the color may change quite a bit when turning heating on, but it needs to be consistent now. Don't forget to slow down printing speed just to stay on the safe side for now, you can speed it up later

 

[avdodooel]

color is exact i want it to be, just like in monitor. But i get these horizontal lines, like ink dropout, ink coming back, grainy horizontal lines. And its on all colors randomly. Its funny. MOstly in solid colors. Thank you people for your time.

 

[Smiler]

Hi had a similar issue a few months ago on my bn20, after much head cleaning and washing inks through it turned out to be the ribbon cables to the head not being seated correctly, if you've renewed the head you know where they are, they MUST be at 90 degrees to the head socket. Put into manual clean mode and check they don't twist as you move the head across the full travel.

 

[iacobcat]

I have same problem here. Couldn’t fix it. If you have any luck...

 

[petit]

I had the same problem with my SP300V and solve if choosing high quality printing in versaworks

 

[ams]

A lot of times it's a hair stuck to the printhead.

 

[Sylvia]

We have had this problem on an off with a Roland 540. Went thought he hole lot: cleaning, different medias, temperature settings,colour profiles, even got a new head. Nothing.
Just a week ago (I think!) we found the 2 or 3 problems:
1.) If we are not using the printer A LOT, occasionally we get stripy prints on solids. The printer needs to run a lot and it "cleans itself" through.
2.) For sensitive solids, use uni-direction (but without the first point it does not solve the issue!)
3.) When you take out a cartridge and shake it, don't print for a couple of hours, let the ink settle.

We are printing over 100m (300feet) of the same pink colour on Phototex at the moment. The first metre was very stripy, after 4-5m of printing the stripes disappeared.
But when I took out my magenta to check how much is left in it and shook it (gently), I immediately got some stripes about a 60cm (2feet) into the print.
I so hope this helps you, we went though a lot with this and it was VERY frustrating.

 

[2ny]

Also check the calibration settings in Calibration > Printing adjust > Setting. We had some problems with thicker materials, and it turned out that we had to change the calibration from 0,25% to 1,25% to get a consistent color on our print. Has to do with the amount the printer feeds the material through the printer process. If that goes to fast it will show like banding.
Otherwise unidirection, high def. and cleaning are solid advises.
Best of luck.

Tony

 

[avdodooel]

Thing got solved by 80% only by printing in 1440dpi and bidirectional and very slow. Funny, if i print unidirectional, same thing, grainy print and lines randomly