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Well after all, I call service. They try head celaning with acetone, spraying directly to head. I never heard for this method, but after that we have allmost 100% correct print test. And then we try another test with black boxes and bandind is disappeared. So, my conclusion is, if you want no...

Yes, we changed captops, and probably all that you can change... There is no profile problem, I have same decals on same material printer 1 month ago, and there is no white lines on black.

This is 3x3 cm black boxes. First one is printed CMYK black, other color is from Roland Color System Library. I often use BK21, what is the most black I can get from tih printer. In this color it's most visible white lines which are irregulary distributed.

I change my black head on Roland Sp300 after 1 year of realy small time of use. I use only original ink, do mainrenance every week, doing test print before every print... Now, after 6 month I see again small banding on black. Print test it's looking good to me, but after I englare print test...

I have electric heater in shop and can use for heat vinyl, but I don't what temperature I get. Clear sheeld in spray it's not avalible in my country. Now, after 2 days vinyl that I laminated with squeegee it's much better than first day. That's almost good for sale to customer. Unfortunately...

I can heat only wiht heat gun, but then the temperature will be unevenly.

Tnx for advice, I will try move slowly.

I have some job to do, it's small black printed sticker. 99% of sticker is printed full black and need to be laminate. I don't have laminator machine, but I use some kind of big squeegee laminator tool. Problem is silvering. On full color prints I dont see that problem, but on pure black it's...

I still have no time for testing, but tnx for advice. I tested few sticker on wall, wooden doors and window glass. It's OK on wooden doors and window, but on wall I have problem with shrinking. Especially in parts with high ink covrege. Maybae I must use some polymeric vinyl?

I can get Hexis, but very limited choice. Can you suggest me what model is good for walls?

Any cheaper solution?

No, only few company sell vinyl in my country. Shiping cost is too high for order 1 roll

:help I can buy only 3M, Oracal or Macatac,

Tnx, I will try this metod.

Tnx fore response. I was hoping that curling problem is because IJ20 have too weak adhesive for wall surface. I am not looking for wall designend vinyl becuse it's not available in my country, and as I read on this forum, people also complain on edge curling when prinitng to the edge.

I am looking for eco sovlent matt white vinyl for wall decals. I will print to the edge. I try with 3M j20, but after one day there is a little edge curling. I cut 24h after printing. It's not important to be removable adhesive. I am new in busines, so I would be grateful for advice.

Hi, Can anyone tell me why I have this little white dots (like a noise) all over print? When printing on vinyl everything is Ok. I am using some 200 gsm paper, for solvent print.

Yes, I know that. If I use printer with white ink (exp Roland VS series or Mimaki CJV30), how long I must wait before white ink will be dry for another layer of color ink?

Tnx, So, mayabe it's not so good idea to go with transparent and solvent ink. Can you sugest me what kind of pritner will be good for printing wall decal on transparent vinyl? Are the UV printers better solution?

Nope. Why do you think that colors will bending with the wall? So far I have not printed on transparency film, so I do not know what the color density of eco solvent ink.