The most common problems with any printer are paper jams. A printer will be stuck for some reason: it is dirty, the wrong type of paper is being used, or the printer rollers that carry the paper through it are worn out. If you want to know more about it so you can easily visit this link: HP Printer Troubleshooting Guide . Cleaning the printer periodically and using the correct type of paper are easy solutions, replacing the rollers can be a difficult task depending on the HP printer model. For some HP printers, the rollers are easily accessible, but you will need to rip the other models completely to remove the rollers.