Hello. My name is ***** ***** I can help you with your problem. However, I do not understand your question. You mention two different and you want to have them see each other. Having two printers talk to each other is a new one on me. Does your Galaxy Note 3 see your Deskjet 2510? Does your Galaxy Note 3 see your Envy 4500? What else do you need? You can print on either printer. Problem solved.
Sorry, you must be mistaken. Deskjet 2510 is a printer. Deskjet is a Hewlett Packard brand name for a product line of printers. IU looked it up on the internet. Please see the attached link:
What is your computer operating system? Are you connecting your printer to your laptop wirelessly?