Patent ID: 7539425
Filing Date: 2009-05-26
Classification: G03G

Abstract:
1. A method to adjust a toner supply to a minimum value in a developer station of an electrographic printing or copying device, in which charge images of images to be printed are generated on an intermediate carrier, the charge image being inked with toner at the developer station, comprising the steps of: measuring toner concentration in the developer station via a toner marking applied on the intermediate carrier and inked with toner at the developer station, and generating a measurement signal; dependent on the measurement signal, regulating a supply of the toner to the developer station; increasing the supply of the toner to the developer station independent of the measured toner concentration upon an under-run of a minimum value of the toner supply per unit time into the developer station so that transfer of the toner from the developer station to the intermediate carrier is increased; and a control marking increased in comparison with the toner marking being loaded and inked with toner to increase the toner transfer from the developer station to the intermediate carrier.