Peak-valley finder process for scanned optical relative displacement measurements

摘要

A method and apparatus for automatic alignment of ink-jet printheads includes fitting measuring constructs to actual print data acquired form a print made using a given, predetermined, test pattern data set. Specific test patterns for use in automated alignment of ink-jet printheads are suited to providing a variety of printhead alignment information in a compact format. The test pattern data set location finding algorithm incorporates techniques for avoiding carriage-induced dynamic errors during automated alignment of ink-jet printheads.