First, you have problems only with your Kyoceras on the network and not with the USB-connected Samsung?
The Kyocera connected to your machine is connected via IPP, try connecting it via AppSocket/JetDirect or LPD.
Start system-config-printer, right-click on the Kyocera's printer icon, click on "Properties" in the pop-up menu and in the dialog window opening then, click the "Change" button at "Device URI". In the new window opening now wait for the auto-detection to finish (spinning icon to disappear) and in the list of auto-detected network printer, choose your Kyocera and at the lower right ("Connection") choose one of "AppSocket/JetDirect network printer via DNS-SD", "LPD network printer via DNS-SD", "AppSocket/HP JetDirect", ...
First, you have problems only with your Kyoceras on the network and not with the USB-connected Samsung?
The Kyocera connected to your machine is connected via IPP, try connecting it via AppSocket/JetDirect or LPD.
Start system- config- printer, right-click on the Kyocera's printer icon, click on "Properties" in the pop-up menu and in the dialog window opening then, click the "Change" button at "Device URI". In the new window opening now wait for the auto-detection to finish (spinning icon to disappear) and in the list of auto-detected network printer, choose your Kyocera and at the lower right ("Connection") choose one of "AppSocket/ JetDirect network printer via DNS-SD", "LPD network printer via DNS-SD", "AppSocket/HP JetDirect", ...
Can you print this way?
If it still does not work, please follow the instructions in the sections "CUPS error_log" and "Capturing print job data" on https:/ /wiki.ubuntu. com/DebuggingPr intingProblems. Thanks.