Patent ID: 6305856
Filing Date: 2001-10-23
Classification: B41J

Abstract:
A method of printing an image in a designated recording area on a recording medium as the recording medium is advanced in a sub scan direction perpendicular to a main scan direction of a printing head, wherein the printing head may cover a wider main scanning range than the recording area, the method comprising the steps of:A. detecting the advancing recording medium at least at two points on one side edge thereof to determine positions of the side edge points in the main scan direction;B. calculating based on the positions of the side edge points a position of the recording area relative to the main scanning range of the printing head;C. defining a scanning area of the printing head by the main scanning range and a sub scanning range in accordance with the relative position and dimensions of the recording area, such that the scanning area includes the recording area;D. producing print data in a size corresponding to the scanning area from image data of an image to print, such that the print data includes the image data in a location corresponding to a location of the recording area within the scanning area; andE. driving the printing head with the print data while advancing the recording medium through the sub scanning range.