Patent ID: 9046356
Filing Date: 2015-06-02
Classification: G01B,G01J

Abstract:
1. A method for computer automated optimal lateral alignment of a spectrophotometer over calibration regions on printed materials of a moving web press for maintaining consistent qualities of a color application process comprising the steps of: moving a traverse arm in an initial first direction; reporting, with said spectrophotometer, representative spectral data from specific regions of interest; converting spectral data to at least one metric; storing, with position data, said at least one metric; moving said traverse arm in a direction opposite said first direction by 1/N width of said patch; applying mathematic interpolation to convert 2N+1 values for said metric and said position to 20N+1 metric values that are equally spaced across a range of said measured positions; finding an attribute of said metric and corresponding said position; moving said traverse arm to said position of said attribute of said metric.