develop use in all photo copier machine for better quality photo copy 

develop use in all photo copier machine for better quality photo copy
how to setting develop ?
press additional functions and press 28 and press additional functions then and touch to lcd panel find out Adjust and touch Adjust and find out next step Copier and touch Copier and find out next step Develop and touch develop and setting above 30 and ok and ok. then reset button two time. and complete and use normally.