You can normally chose to print out in Greyscale in the printer dialolgue box. It might be helpful to know if you are sending .PLT files to get printed or are doing this yourself in house.
Gerald
Gerald Hoffman
“The simplification of anything is always sensational” GKC
Archicad 4.55 - 27-6000 USA
2019 MacBook Pro-macOS 15.0 (64GB w/ AMD Radeon Pro 5600M GPU)