Rasterize for what? A plotter doesn't need rasterization. If you're printing colour offset then the halftone grid would probably use a different rasterization

Rasterize for what? A plotter doesn't need rasterization. If you're printing colour offset then the halftone grid would probably use a different rasterization to the one that you want to use for an inkjet or dot-matrix. "Rasterization" if needed at all probably needs intimate knowledge of the printing hardware.