Since it's an inkjet printer, the HP 7255e needs some maintenance to keep it running smoothly. There are a few maintenance tasks that you can run when you're having print issues, like printhead cleaning, printhead alignment, and smear cleaning. For certain tasks, like changing the cartridges and removing paper jams, there are how-to videos in the menu to guide you. Speaking of the cartridges, you can easily access them by opening the front panel and lifting the entire scanner, and the printer doesn't even need to be on to replace the ink. Unfortunately, you'll have to replace the cartridges pretty often since it doesn't yield many pages before the ink runs out. The sheet rollers aren't very easy to access; the simplest way is to open the front panel, lift the entire scanner, then remove the panel at the back of cartridge bay. The input tray holds a little over 100 plain sheets, and its dedicated photo tray holds 15 sheets, so you may have to refill them often if you're planning on printing large quantities.