HP Printers is offline when the paper is held by a hard-line connection to the computer. The printer needs the means to communicate with the computer so that it can read and communicate to the print feature from the hard drive. The printer itself has no hard drive and can't execute without a document viewing tool. Bringing a printer online implies that without a direct connection to the desktop, it can print papers. The paper is transferred as the printer reads and prints through the distant link.

You can do some troubleshooting at first when you find your HP printer is offline. You should check the status of the connection between your printer and your computer. Make sure your Printer and computer are properly connected with each other, and the network or the cable you use to connect these devices is normal.