SP-300V DX4 HEAD BLACK BANDING

[Mj__]

Hello!

It appears I’ve got some banding with anything solid black. I’ve adjusted bi-directional & calibrated.

Any suggestions from here? I can go into service mode and make sure everything is setup correctly.

 

[Mj__]

 

[damonCA21]

Can you upload a pic of your nozzle print test, it will give more clue as to what is going on

 

[Mj__]

damonCA21

 

[Jim Hancock]

Run the fill test. It's in the test pattern section in service mode. Watch it closely as it prints and examine the edges after it has finished. It prints each channel individually at settings that are the equivalent of the standard print mode in VersaWorks. It will tell you a lot about the condition of each color channel.

 

[Roland Certified Tech]

if the filter test does not show the banding or you are unable to do the Fill test, try different profiles like generic vinyl 2 and make sure your bidirectional alignment is dead on or print in unidirectional to confirm the bidirectional setting.

 

[IsItFasst]

Your feed could use a little bit of correction but should not be out enough to cause what you are seeing. Since your test print looks good I would guess a profile issue. Or possibly even a file issue. I sometimes see files that "look" black but when you print it isn't a true black. If you print a black square from a color swatch in design software does it look like that or just this particular file? If your standard black prints like that too then it is a profile issue. If your black prints normal and it is just this file then it could be either. Sometimes converting to a raster helps when colors look fine on screen but print odd but I normally just do that as a last resort.

 

[Roland Certified Tech]

Print the built in VW test print to rule out file issues. Under Printer, Test Print

 

[Mj__]

Fill test, I can still see slight banding through it.

Given most black printing, I can definitely see the banding throughout it all. It’s like something isn’t aligned. I have tried different profiles, still the same light banding using 100% K

 

[Roland Certified Tech]

Ok. Need to see the service level nozzle test, micro-dot, close up

 

[Jim Hancock]

Please post a pic of the edges of the fill test.

 

[Mj__]

Jim Hancock

The lighting helps illustrate what I’m seeing with 100% K

 

[Solventinkjet]

Have you printed on this material before? To me it looks like the material isn't accepting the ink very well.

 

[Mj__]

Have you printed on this material before? To me it looks like the material isn't accepting the ink very well.

I have. I have used a eco solvent iron on transfer material with the same banding issue.

 

[Jim Hancock]

Have you also tested other materials to eliminate the material itself? Sometimes this issues are a bad batch of material.

 

[Mj__]

I’ve tried this on a gloss material & a matte material for iron on transfers. I get the same visible banding on both materials for rasterised images with black.

 

[Jim Hancock]

Heater settings?

 

[Mj__]

41 degrees

 

[damonCA21]

When did you last change your black damper, and was it for an OEM one or cheap chinese one? With everything else pretty much ruled out it looks like it could be down to ink starvation, so replacing the damper would be the first step to test this

 

[Jim Hancock]

Get your dampers from SolventInkJet.com. They sell aftermarket dampers, but this is the ONLY supplier I would buy aftermarket dampers from. They test out their suppliers before deciding to sell a particular item. I've bought dampers from them for many years with no failures. Any other suppliers, such as DigiPrint, you should only go OEM, as their buyers go for the cheapest price on aftermarket parts, which means you cannot rely on the quality of the parts.