On coordination and stabilization of two xerographic printers

The problem of coordinating and stabilizing the two color tone reproduction curves (TRC) of two xerographic printing engines is considered. This problem is critical to enable two printers to print the same image/collection of images in parallel, hence speeding the overall printing process. The proposed control systems use a small number of actuators and a small number of measurements to coordinate and stabilize the potentially high-dimensional TRC of the two printers. The goal for TRC coordination and stabilization is to minimize the overall least squares deviation of the two TRCs and the overall least squares deviation of each of the TRCs from the nominal subject to disturbances on the printers. In this paper an optimal static and robust static controllers are proposed to stabilize and coordinate the potential high dimensional TRC. Simulations and experiments validate the efficacy of the proposed controllers.