Patent ID: 9354546
Filing Date: 2016-05-31
CPC Classification: G03G

Claim Text:
1. A method to operate a printer or copier to print to a printing substrate, comprising the steps of: providing an inking sensor for measuring an inking of at least one of a developer element in a developer station and an image carrier element; mixing toner concentrate and carrier fluid in a mixer having a toner concentration sensor to form a developer; at a point in time during the printing to the printing substrate removing and exchanging only one of a toner concentrate reservoir or a carrier fluid reservoir such that until the removal and exchange is completed only one of the reservoirs is available to supply only one of the toner concentrate or the carrier fluid respectively to the mixer resulting in a change of toner concentration in the developer; applying the developer from the mixer to ink said developer element in said developer station with aid of an electrical field; by use of the inked developer element inking an image carrier element; and given said removal and exchange of only one of the toner concentrate reservoir or the carrier fluid reservoir at said point in time during the printing, by use of at least one of a toner concentration measurement by said toner concentration sensor and an inking measurement by said inking sensor modifying a strength of the electrical field of the developer station such that a predetermined desired inking of the printing substrate is maintained even given said supply of only one of said toner concentrate or the carrier fluid to said mixer during the printing which causes said change of the toner concentration of the developer in said mixer during the printing.