JV-33 Cyan Banding

[darkorical]

when we do a test print all colors print just fine but when we print we get banding in the cyan as seen below any suggestions
Note each one of the pen marks on the left are 1 inch apart. the attachment is smaller

 

[MixMaker]

Can we see a test draw?

Are you printing that by selecting "Function>#test" and selecting 100% Cyan?

 

[darkorical]

here is the test draw



and here is a function ->test cyan @100%



I am about to re-check but I was told the feed comp was fine on all other colors

 

[J Hill Designs]

does it band in uni or bidi only?

 

[darkorical]

the test was done in uni 5 pass the original was bi 12 pass and it really fluctuates how bad the banding is from one end to the other of a long job I just did a test with the other colors and the Feed comp seems fine on them.

 

[Dice]

It's possible you have nozzle deflection. Ink comes out but not at the correct angle, causing banding. Some of the more advanced printers can adjust for this, but on the JV33 the only way to fix this would be to replace the print head completely.

 

[darkorical]

I do not wish to sound argumentative but wouldn't head deflection show in the test print?

 

[ironchef]

Rgb color? And try another profile with higher res.

 

[darkorical]

we have tried several profiles different number of passes even changing saturation of the print and we still get the same banding in the cyan only.
Adjusting the feed compensation doesn't seem to make any difference with it except for making other colors worse.

 

[J Hill Designs]

very slight ink starvation due to bad cyan damper perhaps?