I had the same problem with pdf's and prints from my HP 500. I discovered a "fix." In the print dialog box, under the "color" tab, select, "True Black." Then, in the "CAD" tab, select, "Use application colors." Then back in the original ArchiCAD print dialog box, select, "Black & White." print it and you will get what you want.
Rick Newton, Architect, ArchiCAD 17, 27" iMac:•3.4GHz Core i7 •32GB 1600MHz DDR3 SDRAM-2X8GB •3TB Fusion Drive •NVIDIAGeForce GTX 680MX 2GB