Patent ID: 8238000

Claim:
A method for calibrating a transport scanner apparatus arranged for scanning a two-dimensional original and forming an electronic image thereof for subsequent usage in an information handling system, which comprises: scanning a test original, provided with a test image, by moving the test original along an optical arrangement fixedly mounted to the apparatus; forming an electronic image thereof, the test image containing at least one marking at a predetermined position; said scanning and forming of the electronic image being executed under the control of mechanical device parameters that control the process of making a mapping from an image on the 2-dimensional original to the electronic image in memory; and in continuation of the scanning of the test original, automatically calibrating the apparatus based on said at least one marking in the electronic bit map image formed therefrom, wherein a zoom factor is utilized in the transport direction, said zoom factor being a mechanical device parameter, and wherein the test original contains a leading edge and comprises two sides of at least one marking in known parallel displacement and parallel with the leading edge by assessing a correction value for the zoom factor based on the actual parallel displacement of the two sides in the electronic image, and without a need for printing out the test original, wherein the apparatus features a left or right margin position stop, and the method further comprises: utilizing a marking of the test original with one side of the marking flush with a left or right edge of the test original parallel to the transport direction, for each line, initiating recording at a first available pixel element of a CCD or stopping recording at a last available pixel element, and assessing a correction value for the left or right margin signal based on a difference between the first or last available pixel element and the one side of the marking, with the one side being flush with the left or the right edge of the test original, respectively.