$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Canon PIXMA MX490 on Mint Gnu/Linux Distro

GNU/Linux Mint Canon PIXMA MX490 Printer Setup – Step by step Guide

How to Install Canon PIXMA MX490 Series Printer/Scanner on Mint GNU/Linux desktops – Step by step Tutorials.

And the Canon PIXMA MX490 Printer Installation on Linux simply involve to Download the Proprietary driver and execute few Basic Commands on Shell.

How to Install Canon PIXMA MX490 on Mint GNU/Linux Distro

Linux Mint Canon Pixma MX490|MX492|MX494|MX495 Printer Installation Guides