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

How to Install Konica Minolta Printer on Gnu/Linux Distros

GNU/Linux Konica Minolta Printer Setup Guide

How to Install Konica Minolta Printer in GNU/Linux desktops – Step by step Tutorials.

Especially relevant: the Konica Minolta Printers on Linux uses PPD Drivers and CUPS as printing System.

And the PostScript Printer Description (PPD) files Contains and the whole set of Features, Capabilities and Code Commands available for their PostScript Printers.