We have been experiencing problems for over a year with patches of light printing and fuzzy lines when printing drawings that have many areas of vectorial hatch patterns. From my experiments, I have found that the problem is present no matter which printer we use, so long as we print directly from ArchiCAD or from Preview via PDF file.
However, the workaround has been to save PDFs and print using Adobe Reader. Seems Adobe's PDF reader or print engine does not produce the same print quality issues.
Mac OSX 13.6.5
AC27&26, Artlantis 2020, TwinMotion
iMac Pro 2017 / 8-core 3.2 GHz / 32GB RAM