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US 7,800,779 B2Granted
System and method for image based control using inline sensors
AssigneeXerox Corporation
InventorsZhigang Fan, Lalit Keshav Mestha, Yao Rong Wang, Shen-ge Wang
Life of this patent
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Abstract
Disclosed are a system and method are directed to efficient image based color calibration and improving color consistency performance, and more particularly to the use of continuous or dynamic calibration performed during printing and enabling adjustment on a page by page basis.
Claims20
A method for image based control of a printing device, comprising:
- a training process, wherein a total color drift is modeled;
- and
- using the color drift modeled in said training process performing a calibration process continuously during completion of a printing job based upon measurements obtained from sensors operatively associated with the output device.
A method for controlling performance of an image output device, comprising:
- characterizing the variability of the image output device in terms of a model;
- periodically collecting data relating to a current state of the image output device;
- and
- applying the data to the model to determine an adjustment to be made to the image output device.
1 more element
A system for image based color calibration, comprising:
- an image output device for rendering printed color documents in response to digital image data an initial configuration as processed by a digital front end processor operatively connected to the system;
- a memory for storing information characterizing the performance of the image output device;
- a color sensor suitable for detecting a color of an image deposited on the printed color documents and producing an output indicative of the color;
- and
- a calibration processor for receiving the output indicative of the color and, in conjunction with the information characterizing the performance of the image output device, producing a modified configuration for subsequent use in rendering the printed color documents.
2 more elements
Dependencies are inferred from the claim text.