You are kindly asked not to misuse the colour print. Please check you settings to avoid the involuntary abuse of colour prints.

1. From System/System administration select Printing
2. add a Network Printer with the AppSocket/HP JetDirect protocol
3. insert the correct hostname
4. and provide the Kyocera_TASKalfa_4550ci.PPD from the zip file from the bottom of this page
5. in the "Installable options" add the Casettes 3, 4 and finish the installation
6. check the properties and in Printer Options set the default Color Mode to Black & White

Driver:

PPD