brother-lpr-drivers-mfc9420cn software package provides LPR driver for mfc9420cn brother printer, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install brother-lpr-drivers-mfc9420cn
brother-lpr-drivers-mfc9420cn is installed in your system.
Make ensure the brother-lpr-drivers-mfc9420cn package were installed using the commands given below,
$ sudo dpkg-query -l | grep brother-lpr-drivers-mfc9420cn *
You will get with brother-lpr-drivers-mfc9420cn package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Text Processing |
| Package | brother-lpr-drivers-mfc9420cn |
| Version | 1.0.0-3-0ubuntu4 |
| Description | LPR driver for mfc9420cn brother printer |
| Sub Section | text |