SERIES CAPACITANCE DEVICE FOR MONITORING EMULSION AGGREGATED TONER AND PROCESSES
Original Publication Date: 1999-Aug-31
Included in the Prior Art Database: 2004-Apr-09
Xerox Disclosure Journal
Disclosed is the use of a series capacitance device for monitoring Emulsion Aggregated (EA) toner and processes. One of the key steps in the EA toner manufacturing process is to wash the EA toner to remove residual surfactants. It has been observed that suitably washed EA toner particles then dispersed in an insulating hydrocarbon fluid would give close to zero charge density as measured by the series capacitance device. On the contrary, the unwashed EA toner shows an extremely high charge density. This device may be used as an offline quality control tool for manufacturing EA toner.