Double-sided printing: Make it a habit to print double sided or use the back side of old documents for faxes, scrap paper, or drafts. Most printers (if not all) have a double-sided mode. This may mean you need to feed the document back into the printer to get both sides printed, but it’s really simple.
By changing your font to ink friendly fonts such as Century Gothic or Times New Roman you can save on toner cartridges.
Grayscale printing: Also, set your color setting to “gray-scale” or “black and white” with the black cartridge only. Did you know that some printers will use your color cartridge even if you say black and white? So check it out.
Print in “draft” mode: Also, printing in “draft” mode is best for everyday less important printing. Important documents are really the only things you need to print in normal mode.