how install hplip-gui ubuntu

ubuntu

hplip-gui

HP Linux Printing and Imaging – GUI utilities (Qt-based)
http://hplipopensource.com/hplip-web/index.html
Install sudo apt install hplip-gui
Description:

The HP Linux Printing and Imaging System provides full support for printing on most HP SFP (single function peripheral) inkjets and many LaserJets, and for scanning, sending faxes and for photo-card access on most HP MFP (multi-function peripheral) printers.

This package contains utilities with graphical user interface (GUI) for HPLIP: HP Toolbox, HP Fax, …

Note that all GUI utilities are based on the Qt GUI environment. There are currently no equivalent utilities based on GTK+.