HP printers have been known in the market and trusted by the consumers for its quality product and features. Now being introduced with the ability of wireless printing, the printing job has become much more easy and relaxed. No need to regularly connect the USB cables as the Wi-Fi connection would suffice for that. You just need to install the printer on the computing device via a wireless connection and can get print outputs from anywhere in the near vicinity by just having a smartphone in the hand. When it comes about the features and components of a printer, the users need to understand the internal structure, so that the users can take care of the components and make sure that they are not damaged, to avoid any errors in the near future. A printer usually consists of ink cartridges, paper tray, printer drivers, Fuser roller, etc. Every component has its own role to play and with every component, you can associate one or more error if by any case it gets damaged or corrupted. Talking about the Fuser Roller, for instance, it performs the main function of transferring the toner to the print images. When the printer is used for too much time, it can get heated and thus causing the printer to not give the output. The error with the Fuser roller is termed an error code 50.4, and this blog will help you understand that how can you fix this error and avoid it in the near future. If the error occurs again and again, even after you have executed the given guidelines in the blog, then you must talk to the technical associates at HP printer support number as there could be some internal issue which needs to be rectified on an urgent basis.