Newbie to the forum who needs some help. I have a Roland SP540V printer with horizontal banding and grainy/noisy prints. We've had several different "Repair" techs out and haven't been able to solve our problem, just make excuses like "there's some bad ink in there, you just need to run it til its prints itself out". They've replaced our dampers, replaced a head (dark), and have cleaned everything.
I am using 3M 3M180IJ white vinyl as my media. When you run a test print all the lines on the test print look perfect, so I am sure the print heads are not the problem. The tech said it was probably a bad black ink cartridge, but he drained the black ink out of the lines and put a fresh black ink cartridge in and the problem still exists. I tried switching from bi-directional to unidirectional, but you can see from the pictures below that the problem exists on both prints. After reading some forum threads, we think it could be our profile settings...anything pop out as problematic?
Media type: Generic Vinyl I
Print Quality: High Quality
Mode: CMYK (v)
Interpolation: Nearest Neighbor
Head Speed: 400 mm/sec
Preset: MAX Impact
Vacuum Power: Strong
Head Height: Normal
Print Heater: 37 C
Dryer: 40 C
Try running test with MaxImpact off and see what happens. Can you post your nozzle check?
With Max Impact off, its even worse...more grainy and gets lighter in the banding. When the repair guy was here, it started out with a lot of missing lines. He changed the dampers, saw some improvement, then he replaced the Dark Head and it was showing perfect nozzle checks. Even though the nozzle check was perfect when he was here, we still saw the graininess & banding. Now we have a dark line going down the middle (see pic)
Are you using Roland Inks?
Which version of VW are you using?
Showing me your calibration test?
When nozzles are good, banding is a calibration issue - Calibration is from wrong calibration or wrong profile
Switch profile to GCVP
What type of file - vector or raster - raster - Prepress US / vector - max impact
Not sure why you have a line like that in between your repeated test print- that could be causing your bands. Did you have a head strike after the head was changed? Did he print the head alignment after replacing the head and leave it with you?
yes we use Roland Inks, we are using Version 5.2.2. We do not have a calibration test, the repair guy said he did one and that its stored in the printer.
We do use Generic Vinyl Profile if that's what GCVP
What is a head strike? He did not leave us with any sort of calibration or head alignment printout.
I agree with butch and would add that you need a head offset alignment - the rows should be straight down in between the two passes of the print head.
You will need a tech to do the head offset alignment
That makes total sense. When we print out long runs of decals, anything past 3-4ft, the cutline starts getting exponentially off center. Up until now, we just thought it was a cutting issue, but now that you point out the print is not straight after the messed up line, its obvious the printing is what is being skewed off center and the cutting process is probably correct.
Thank you all for sharing you knowledge! The repair guy is coming back over this afternoon, now we are armed with at least some understanding of whats the issue. I'll let you know what happens.