Anyone Had This – white spots in dark area of print?

[John Cornfield]

Grenadiers 54″ and 72″

Never clean prior to print.

Two things is it a new media you have never used before?

Was the environment any diffirent hot cold humid?

We get spots occaissionally normally it happens on a media we have not got the profile for. Soemtimes it happens when the media has been left out for a while and the first part (the bit that has been expeosed) has dust etc.

Only other thing could have been your heaters (not sure if cadet has them) were on and up to the right temp.

Cheers

JC

[Shane Drew]

quote Forbie:

I have a Cadet Solvent ink and doing some prints last night I started to get white spots in the dark area of my print totally random different placesvdifferent amonts in the next print.
I put this down to the media being dirty.
I though digital print media could be printed directly off the roll without the need to pre clean.
I’m not happy as this is a new roll

Question Has anyone else had this?
Do you pre clean digital print media before you print on it??

thanks for any comments

Goop

Goop, I have had this too, and it was dirt on the roll.

If you buy a full roll of Oracal it has not been touched by human hands (all robotic at the factory) but if I buy a part roll, I have to make sure my supplioer uses gloves to handle it.

Unfortunately not all do here, so I always ask before trying a new supplier

Can’y be much help mate, other than to say that a new full roll should be sweet straight out of the box

[David Rowland]

we have JV3 solvent..

If white speckles start and they appear only at the first foot, then it maybe dust/contamination collecting. I know our JV3 has carpet in there and this plays havoc with printing. Also we store the large rolls on the floor/carpet on the ends, static is attracts the dust to them.
The other JV3 I sometimes operate is in a clean white room and dust/speckles isn’t a problem.

Is it only at each end of the roll, this could be greasy fingers while loading or media tempreture & pre-heat/print heat isn’t correct.

Is the print mottle-effect? That would be tempreture.

I suspect the cadet is a little similar to the JV3 but if it is freezing there then you will be working hard to get the best print results. Printers like a good warm summers day.

[John Cornfield]

Yep Shane reminded me.

Finger prints leave marks that come through when printing. The most likely culprit will be yourselve handling media.

[Gordon Forbes]

Well with finger prints i have seen exactly that Finger prints.
Dave I think you have hit it on the head I store on the floor with the end of the roll in one of the ends you get with them. looks like I will have to change that although there was a few layers off the roll and it still was doing it.
Do you get Oracal ICC profiles for the cadet with solvent ink or do you try a generic one from the versacam??

Goop thanks for your help gents.

[Robert Lambie]

gordon if you have troop, use 5-7 year gloss vinyl profile, run it with same life of orajet and it prints spot on.

[drogers4]

I have problems with dust/particles on my prints with the versacamm. I use cloth gloves when handling the media, which also seems to shed fibers on the vinyl, but then I use a 3M microfiber tack cloth to wipe the first 2 feet of the vinyl to remove the dust. It does pretty well, but still have small specs in the first couple feet of print.

If I don’t wipe it down, the first part of the print looks like crap (I have a really dusty shop). Try the tack cloth, it helped a lot for me.

[drogers4]

I have problems with dust/particles on my prints with the versacamm. I use cloth gloves when handling the media, which also seems to shed fibers on the vinyl, but then I use a 3M microfiber tack cloth to wipe the first 2 feet of the vinyl to remove the dust. It does pretty well, but still have small specs in the first couple feet of print.

If I don’t wipe it down, the first part of the print looks like crap (I have a really dusty shop). Try the tack cloth, it helped a lot for me.

[Gordon Forbes]

Thanks for the tack tip and Rob don’t use Troop use Signlab 7 and have dabbled with colourchoice I think it is the one that Roland supply anyway.