No you do not need pre-printed forms or any special paper. With 1095 Mate you can print on regular 8.5X11 white paper. Each year we send 1095-C / 1094-C forms generated by our software to the IRS to test on their scanning machines.
To learn more about 1095 Mate please visit:
https://www.realtaxtools.com/aca-1095-1094-software/