Elementary has a default printer manager. Clicking on +Add Printer caused Elementary to immediately see the printer and properly ID it. The manager gave me several choices of drivers, and I chose HPLIP since it the printer is a genuine HP. The printer receives some part of the job, but it never prints. I'm wondering if it's a firmware issue with the printer rather than a driver issue in the OS. Elementary is persnickety about third-party apps. In fact, the repository command is disabled. If it's not available with apt-get only then it's not likely to work. Generally, they want you to confine your installs to stuff available through their fork of the Ubuntu app store. I'll check there for an HPLIP gui.