Right click on the driver and choose printer properties and then go to either the Configuration or Administration tab( top right tab IIRC) and make sure your model is selected from the dropdown of printer models and that it isn't set to Altalink C8045, for example. If it is set to C8000W already then either uninstall and reinstall the GPD PS OR browse to your soecific device and use the smart installer but make sure you choose advanced install and choose the V3 versionof the driver and not the V4 version. Good luck
I am trying to print something, and I need to change the toner adjustment to white toner only. When I go into printer preferences and printer options, I do not have the option for toner adjustment. The output color is only color or Black and white.