Ricoh Pro C7500 Original Instructions Manual page 11

*1
The developer consists of positively charged carrier (+) and negatively charged toner (-).
*2
The carrier is pre-mixed with the toner in the toner bottle and the mixture is supplied to the
development unit to constantly refresh old developer in the development unit with new developer.
Related Advanced Settings
page 34 "Maximum Image Density"
Electrophotographic Process – Development
9