LIQUID TONER CONCENTRATION SENSOR DEVICE, ELECTROPHOTOGRAPHIC PRINTER, AND LIQUID TONER CONCENTRATION MEASUREMENT METHOD

摘要

A liquid toner concentration sensor device 30 includes a dispersion tank 31, a stirring tank 32, a concentration sensor 33, a control device 34, and a charge adjustment unit 35. The stirring tank 32 is a container for storing a liquid toner T conveyed from the dispersion tank 31, a highly concentrated liquid toner T1 conveyed by a concentrated toner pump 25a, and a carrier conveyed from a carrier pump 25b. The concentration sensor 33 measures the concentration of the liquid toner T conveyed from the stirring tank 32 to a supply pan. The control device 34 controls the concentrated toner pump 25a and the carrier pump 25b based on the measurement results of the concentration sensor 33. The charge adjustment unit 35 is capable of removing the charge from the charged liquid toner.