While printing envelopes on my hp office jet printer 4500 g510a-f the delivery address where the return address should be how do I fix it?
Remove the envelope from the main tray, and rotate it to the appropriate degree that will have the delivery address on the right spot then try printing again. You can also try adjusting the print settings if this doesn't work.
Either redo it with them in opposite sides or try again, also you can just white it out and rewrite it.
Rotate the envelope 180 degrees and print again.