Patent ID: 7453608
Filing Date: 2008-11-18
Classification: G03G,H04N

Abstract:
1. A method of controlling an image forming apparatus, which outputs image data received from an external apparatus, comprising: a first reception step of receiving, from the external apparatus, first correction data, which is obtained by correcting, based on deformation information generated upon formation of image data, pixels in a vertical direction of the image data in a first unit; a second reception step of receiving, from the external apparatus, horizontal correction information required to correct pixels in a horizontal direction of the image data based on the deformation information; a third reception step of receiving, from the external apparatus, vertical correction information required to correct pixels, which cannot be corrected in the first unit in the vertical direction of the image data based on the deformation information, in a second unit; a correction step of generating correction data of the image data by correcting the first correction data using the horizontal correction information and the vertical correction information; and an image forming step of forming an image based on the correction data.