Patent ID: 9535385
Date: 2017-01-03
CPC Classifications: G03G

Claim:
1. A method to adjust print quality of print images in an electrophoretic digital printer with at least one print group, comprising the steps of: generating with the print group with an electrophotography station of the print group charge images of the print images; with a developer station, developing the charge images into toner images using liquid developer having carrier fluid and toner; transfer-printing the toner images onto a recording medium in a transfer station; with said print group generating on the recording medium a first control marking with elements of the first control marking being aligned transverse to a printing direction; measuring a shape of the elements of the first control marking to generate a first measurement signal; and comparing the first measurement signal with a predetermined nominal value, and given a difference between the first measurement signal and the predetermined nominal value generating an adjustment signal via which an amount of the carrier fluid in the liquid developer is modified so that the first measurement signal approaches the predetermined nominal value.