Problem printing canvas on Roland Re640

[CJ1]

Hi everyone hop you can help me.

When I print a solid colour on canvas I get this wierd random line issue.

Did a head check which was fine. Printing banner out perfectly on same setting as the canvas. Could it be the media causing the problem

Anyone had this before?

 

[CJ1]

The print head movement also sounds slightly different than normal but have done all my normal checks. Seems quiter.

 

[ARS ALABASSY]

Hello . I think the media is not printable, possibly due to poor storage or moisture. Try changing the media

 

[Jim Hancock]

What is the canvas brand and type? Maybe a pic of the label...

 

[CJ1]

Hi guys thanks for the replys.

It's from colorbyte. I have never had this problem before and have used 100s.

Been stored behind the printer in its Usual packing box with wrapper. About 1 month old due to lockdown

Thanks

 

[Joseph44708]

Have you tried raising or lowering your head height?

 

[CJ1]

Hi we always run the head on low. I have printed loads of other media since abd it's worked great so must be the canvas stock.

 

[Bingleardicus]

Looks like low dot gain or pressure issue, The material may also not be printable, also if the canvas roll was laid down and had a flatspot this could be possible because of how uniform the defect is.

 

[Jun Lanon]

I also print on a canvas using a flatbed and I've noticed these types of streaks or unusual banding. After turning off the vacuum, the prints became more solid.