Patent ID: 7016620
Filing Date: 2006-03-21
Classification: G03G

Abstract:
1. A method to control a print process in a printer or copier, comprising the steps of: with a character generator generating a latent print image and a latent toner marking on an image carrier; providing an optical reflection sensor to determine a color density of the toner marking after development; decreasing an exposure energy per unit area for the generation of the latent toner marking in comparison to an energy per unit area for generation of the latent print image given an otherwise identical image structure, the decreasing of the energy occurring when at least one of a ratio or a differential quotient of toner concentration and color density at an operating point of the optical reflection sensor exceeds a predetermined value; developing the latent print image and the latent toner marking with toner in a developer station; with the optical reflection sensor determining color density of the developed toner marking; and adjusting toner concentration in the developer station dependent on a signal of the reflection sensor.