Ink cartridges in HP inkjet printers usually contain enough ink to print a few hundred grayscale or color documents before you need to change them. Nevertheless, it is a good idea to have a couple of spare cartridges on hand just in case one runs out of ink during the middle of a print job. If you use your HP printer only occasionally, it might not be necessary to keep a stockpile of cartridges, but you should still monitor ink levels in the printer so you know when to buy a replacement. Checking the ink level in an HP printer is relatively simple and there are a couple ways of doing it depending on the model you own. Writer Bio
