Install Canon IJ Printer Driver, ScanGear MP in Ubuntu 16.04 - Tips on Ubuntu
How to install proprietary drivers in Ubuntu
Scanner Driver for Ubuntu®
Scanning on Ubuntu 18.04 and Trisquel 8.0
HP Linux Imaging and Printing Driver Adds Support for Ubuntu 20.04 LTS - 9to5Linux
20.04 - What can I do to make Ubuntu to detect my scanner? - Ask Ubuntu
HP scanner setup in Ubuntu 18.04 (obsolete) - YouTube
How to Install Canon Scanner on Ubuntu 16.04 Xenial LTS Linux • tutorialforlinux.com
drivers - Ubuntu 18.04 doesn't see the HP scanner - Ask Ubuntu
How to set up a HP printer in Ubuntu - Tutorials & Guides - Ubuntu MATE Community
GitHub - zub2/scanner-pro-ll2: Scripts to create Debian/Ubuntu package for the scanner driver for Philips MFD 6020, Ricoh Aficio SP1100S and perhaps others.