Why is my printer not printing in grayscale?

Check Printer Settings
In your printer settings, ensure the Grayscale or Monochrome option is turned on.
Check Printer Drivers
Ensure you have the most up-to-date printer drivers installed.
Clean the Printer
Cleaning the printer can help resolve any clogs or obstructions.
Replace Toner or Ink Cartridge
Check to make sure the toner or ink cartridge is not expired and replace it if necessary.
Check Output Quality Settings
Change the output quality settings in the software application you are using to print.