Printing seems Grainy

[ml4cs]

New to large format/solvent printing. I have a Roland SP540i running Liquecolor inks in a 440ml cartridge printing on Oracal 3651 gloss

I read some posts and adjusted print temp to 108 and dry temp to 110

Lighter colors seem to come out grainy, darker seem ok if I print at high quality, also used a few different color profiles in versaworks and kept getting better

My question is will I ever be able to get rid of the grain with Gloss? or would I have to go Matte with Lamination?

Would settings, calibration, ink or media make any difference

Thanks!

 

[Jim Hancock]

Reprint the file in Uni-Direction. If it looks better, you need to do the bidirectional adjustment. See attached. Use the detailed mode.

 

[Andy D]

It depends what you mean by grainy, some profiles are set up for the black to be a 100%K instead of a combination
of CMYK, that gives a printed faux metallic look.
It also depends on what output resolution your profiles are set at; 540 x 720 -720 x 720 - 720 x 1440 -ect.

 

[Jim Hancock]

Please post a clear closeup pic, especially if you can print some small text.

 

[greysquirrel]

Would settings, calibration, ink or media make any difference.....yes, yes, yes and yes...being new to printing, do yourself a favor and go back to OEM inks

 

[ml4cs]

Reprint the file in Uni-Direction. If it looks better, you need to do the bidirectional adjustment. See attached. Use the detailed mode.

Ran through a detailed bi directional adjustment.

now printing at high quality seems to get rid of the grainy look. I’ll load a couple pictures

 

[ml4cs]

Ran through a detailed bi directional adjustment.

now printing at high quality seems to get rid of the grainy look. I’ll load a couple pictures

 

[siphon56]

It depends what you mean by grainy, some profiles are set up for the black to be a 100%K instead of a combination
of CMYK, that gives a printed faux metallic look.
It also depends on what output resolution your profiles are set at; 540 x 720 -720 x 720 - 720 x 1440 -ect.

And how can we change this? my print is also giving some grainy effect.

 

[cornholio]

First things first.
A SP-540i is a CMYK printer.
LC/LM/ and especially LK would help a lot, but not possible on this 4 channel printer.
If your head alignment is off, you get grainy halftones, no matter the settings.
A quick check is a 100/100/100/100 hairline (0.05mm) square 30x30mm or so. Printed with "density control only".
The vertical lines will be wider. If a lot wider, or double lines, this tells me that the bidirectional setting is off, the horizontal adjustment is off, or the head(s) are slanted.
You can print unidirectional, to take out the bidirectional factor. If in uni, the verticals are still wider, you need to adjust the heads in service mode.
If the horizontal adjustment is off, you can reduce the head speed to 300 to check.