Patent ID: 8867097
Filing Date: 2014-10-21
Classification: B41J,G03G,G06K,H04N

Abstract:
1. An image processing apparatus comprising: a forming unit configured to form, on a sheet, a pattern from which a first line and a second line each connecting two points located at positions parallel to a conveyance direction of the sheet are detectable; a detection unit configured to detect, from the pattern formed by the forming unit, lengths of the first and second lines each connecting two points located at positions parallel to the conveyance direction; and an acquisition unit configured to acquire a correction value used when correction is performed so that there is no difference between the lengths of the first and second lines detected by the detection unit, wherein the forming unit forms a corrected image obtained by correcting an image to be output using the correction value acquired by the acquisition unit, wherein the second line is shorter than the first line, the correction value acquired by the acquisition unit includes a magnification ratio in a sub-scanning direction to increase the length of the second line, and the magnification ratio differs depending on a position in the sheet with respect to a main-scanning direction of the sheet.