Hi smozumder9197,
It looks like this is a hinge from the printer. If the printer is still working without it then I wouldn't worry about it, if however, the printer is not working I would suggest you consider contacting HP.
The number is 1-800-474-6836 for Canada and US or you can Contact HP Worldwide. If the printer is out of warranty they may be able to offer you a newer printer at a discounted cost, certainly worth giving them a call to see what they might have to offer.
Best of luck.