This is an old revision of the document!
Here I am documenting my plight of installing and configuring an HP LaserJet MFP M28 M31 (all-in-one) printer / scanner with Linuxmint 19.1 using the current HPLIP 3.19.3 drivers from HP.
Printing seemed to work straight away. Scanning on the other hand took me a bit to figure out.
The dirty list of references:
HP Download - https://developers.hp.com/hp-linux-imaging-and-printing/gethplip
HP Instructions for installing HPLIP - https://developers.hp.com/hp-linux-imaging-and-printing/install/install/index
Fix for Allows the hp-plugin script to complete - https://bugs.launchpad.net/hplip/+bug/1813768/comments/5
Additional suggestions on things to try - https://ubuntuforums.org/showthread.php?t=2387244&p=13748997#post13748997