Patent ID: 6654143
Filing Date: 2003-11-25
Classification: H04N

Abstract:
A method of adjusting a printing device in response to a variable property of an output medium comprising:storing a reference characterization of at least one measured value associated with a reference output medium; determining an output value adjusted for the variable property of a desired output medium based on data including the reference characterization of the reference output medium, including: calculating a theoretical value based on the reference output medium, deriving a relationship between the calculated theoretical value and a corresponding measured value from the stored reference characterization, including: deriving a reference Neugebauer model to predict the printer response on the reference output medium, wherein the Neugebauer model includes an appropriate Yule-Nielsen parameter for the reference output medium, and spectra of selected Neugebauer primaries for the reference output medium, deriving a desired Neugebauer model to predict the printer response on the desired output medium, wherein the Neugebauer model includes an appropriate Yule-Nielsen parameter for the desired output medium, and spectra of selected Neugebauer primaries for the desired output medium, applying said reference Neugebauer model to generate a set of calibration values for the reference output medium; and, applying said desired Neugebauer model to generate a set of calibration values for the desired output medium; applying the relationship derived to a theoretical value for the desired output medium, thereby obtaining the output value; and, based on the step of applying the desired Neugebauer model, marking the desired output medium using the determined output value.