Patent ID: 6160971
Filing Date: 2000-12-12
Classification: G03G

Abstract:
A toner concentration control system for maintaining toner concentration in a developer structure, which is connected to a dispenser containing toner, the toner concentration control system comprising:a toner mass estimator providing a toner mass estimate of the toner mass in the developer structure to be applied to a photoreceptor;a feed forward dispense unit receiving the toner mass estimate and transmitting a feed forward dispense command based on the toner mass estimate;a toner concentration target adjusted for toner break-in in the developer structure;a feed back dispense unit receiving the adjusted toner concentration target and transmitting a feedback dispense command; anda total dispense unit receiving the feed forward dispense command and the feedback dispense command, and outputting total dispense command to the dispenser, which dispenses the toner to the developer structure in accordance with the total dispense command.