Robust Control and Diagnostic Strategies for Xerographic Printing
نویسنده
چکیده
In this paper, we outline two strategies for the maintainence and optimization of the printing quality of xerographic systems. The first strategy is concerned with the management of the effect of disturbances and system variations in the context of control of the tone reproduction curve via a robust control methodology. The second strategy deals with larger scale faults and capability degradation in the xerographic process. In this case, a Bayesian Network based diagnostics strategy is proposed to detect the fault state and the state of the capability of the printer. Based on these, the controller be can reconfigured so as to optimize the printer’s performance under degraded mode.
منابع مشابه
Robust stabilization of tone reproduction curves for the xerographic printing process
The problem of stabilizing a single color tone reproduction curve of a xerographic printing engine is considered. This problem is critical to ensure high-fidelity color printing. The control system uses a small number of actuators and a small number of measurements to stabilize the potentially high-dimensional tone reproduction curve. The goal is to minimize the overall least squares deviation ...
متن کاملColor Reproduction Stabilization with Time-Sequential Sampling
Color reproduction stabilization is a control process to ensure that the printed output matches the desired color tones. In this paper we consider the stabilization of single color tone separation. The mapping of input-tone to output-color is characterized by the color tone reproduction curve(TRC). By compensating for any variations of the Xerographic printing process, the TRC stabilization con...
متن کاملDirect Color Consistency Control for Xerographic Printing
The digital color printing process can be described by the color reproduction characteristics (CRC) function that maps the input color to the output color. The CRC map is high dimensional in that there are potentially high number of output colors that a digital color printing process can reproduced. To maintain color consistency, it is desirable to have the CRC to match the desired CRC map at a...
متن کاملRobust Stabilization of Tone Reproduction Curves for the Xerographic Process
The stabilization of a single color tone reproduction curve (TRC) is critical for high delity color printing. A TRC controller uses a small number of actua-tors and a small number of measurements to stabilize the potentially high dimensional TRC. The overall least squares deviation of the TRC from the ideal nominal TRC is minimized in the face of the many disturbances and uncertainty in the sys...
متن کاملRepresentation of Primary Color Tone Reproduction Curves their Stabilization
This paper proposes and compares different methods of representing the primary color tone reproduction curves (TRC) for the stabilization control in a color xerographic printing process. TRC stabilization is vital in maintaining high consistency in color printout. Colors are typically represented by a 3-dimensional representation such as the CIELAB or CIEXYZ colorspaces. For stabilization contr...
متن کامل