Sublimation placemats

[colmac01]

I am just trying to print some placemats. The image is black and white but the blacks are coming out mottled. Has anybody got any suggestions? Thanks in advance.

[Paul]

200C -60C is your time and temp?

[colmac01]

That is correct! Any suggestions. Was going to try 70 seconds but worried about ink burn.

[Justin]

Could be moisture, try a pre heat.

[colmac01]

How long for? 10 seconds?

[Paul]

i would go for 70sec.

[colmac01]

Cheers Paul, would you not bother with a pre heat?

[Paul]

i didn't pre heat. bu i pressed my with 190C for 60sec. with heavy pressure.

here is the video and results. from 8min8sec

youtube_share;ZxwO4MRiZ-w

http://youtu.be/ZxwO4MRiZ-w?t=8m9s[/video]

[colmac01]

Tried again this morning and am still getting a mottled effect in the middle of the place mats. I am giving up with them now. Wasted too much time and money on them now!!! Yet coasters are printing fine.

[Paul]

coasters are smaller, so heat may be more even. is it possible you have a big cold spot in the middle?