I need a large quantity of decals for my N scale ships, especially white lettering on clear.
With clear paper on inkjets, I've had good luck with dark color lettering on light backgrounds, i.e., black on gray or light blue, and have been matching the dark backgrounds with white decal paper with fairly good success, but would like to offload this process entirely. Also need someone who can take Illustrator or pdf files.
The major problem with inkjets or laser printers is light colors on dark backgrounds, as neither technology seems to deposit enough ink or toner to be opaque. Pennsy "gold" lettering on BLE green just disappears, for example, even when I apply two layers of decals, which of course leads to registration problems. Most printers do not print white.
I've been so busy building ships that I haven't had time to research this properly.