METHOD FOR DETERMINING PRINTHEAD MISALIGNMENT OF A PRINTER

摘要

A method for determining a printhead misalignment of a printer. One step includes printing a printhead alignment test pattern including spaced-apart images at least partially aligned substantially along a printhead scan axis. A sensor (22) is moved along the printhead scan axis at a known speed over the plurality of images. Sampled data points are obtained from the sensor (22) at a known sampling rate. Another step includes determining the locations along the printhead scan axis of the edges of the images using the sampled data points, the known speed of the sensor, and the known sampling rate. An additional step includes calculating the printhead misalignment from the determined locations of the edges of the images.