| 摘要 |
In a method or system for regulation of real values of toner concentration and fill level in a mixing unit to predetermined desired values in a developer station of an electrographic printing apparatus, the real value of the toner concentration in the mixing unit is adjusted with a first control unit by supplying toner concentrate from a first reservoir. A desired toner concentrate value is determined from the predetermined desired values of the toner concentration and the fill level. A real concentrate value is also determined from the real values of the toner concentration and the fill level measured in the mixing unit. With the first control unit, a feed of toner concentrate into the mixing container is regulated depending on a difference between the real toner concentrate value and the desired toner concentrate value. The real value of the fill level in the mixing unit is also adjusted with a second control unit by supplying carrier fluid from a second reservoir. A desired carrier fluid value is determined from the predetermined desired values of the toner concentration and the fill level. A real carrier fluid value is also determined from the real values of the toner concentration and the fill level measured in the mixing unit. With the second control unit, a feed of carrier fluid into the mixing unit is regulated depending on a difference between the real carrier fluid value and the desired carrier fluid value.
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