How do I load paper correctly in the HP Envy 6400e to avoid jams?

Open the paper tray and slide the paper-width guides to the edges, then insert a stack of full-size or photo paper into the middle of the tray with the short edge oriented towards the printer and the print side facing down for photo paper. Slide the paper in until it stops, then adjust the paper-width guides to fit snugly against both edges of the paper without bending it. Make sure all paper in the stack is the same size and type to avoid paper jams, and ensure the edges are not bent or torn.