Another issue why
you get roller marks is the weather and humidity , typically with cooler weathers
inks tend to dry slower on frosting sheets, so the result is the ink is still slightly wet as its passing through the front rollers.
There is a quick, cheap and somewhat unorthodox method to resolving this issue that involves about 5 minutes of your time, some tape and 2 x wooden skewers or dowels.
What is required:
2 x Wooden Skewers / Dowels around 1/4 " in thickness. Well thick enough so it is nice and tight when you insert into the printer so to prevent the skewer / dowel from moving around.
1 x Roll of tape. Preferably a strong tape like electrical tape but not too thick.
1. Basically get yourself 2 skewers or dowels which can be purchased from any supermarket, hardware store and even cake decorating supplier.
2. Slowly insert the first skewer / dowel in the far left opening of the output tray where the edible papers would be come out from.
3. Push it in about 1 - 1.5 Inches, just enough until it seems to firmly stay in its place and not to obstruct the print head as its printing.
4. Repeat this step but this time insert a skewer into the far right area in the output tray.
5. To make sure the skewers don’t move during printing, wrap some tape around the skewers / dowels and attach to the printer. If your dowels are thick enough they may not even need this.
6. Test your print. If your edible sheets print out freely without touching the skewers and the skewers don’t seem to move at all then you are good to go!
** Cut your Dowels in half or make them short enough so they don't poke out too much from your printer.
** You only need to use the tape if you see the dowels moving however in many cases if you have a thick enough dowel that feels nice and tight in its place then taping isn't required.
** DO NOT force the dowel too far into the printer otherwise this can come into contact with the print head and risk it being damaged. Look underneath yourself and simply make sure the dowel moves in enough to raise the upper ceiling of the printer.