Patent ID: 8157345
Filing Date: 2012-04-17
Classification: B41J,G06K

Abstract:
1. An image recording apparatus, comprising: a recording head having a plurality of recording elements; a conveyance device which conveys at least one of the recording head and a recording medium so as to cause relative movement between the recording head and the recording medium; a test chart output device which outputs a test chart including at least a density pattern onto the recording medium by using the recording head; an image reading device which reads in the test chart output by the test chart output device; a reading position information acquisition device which acquires reading position information for the density pattern, according to an image of the test chart obtained by reading in the test chart by the image reading device; a density information acquisition device which acquires reading density information for the density pattern corresponding to the reading position information, according to the image of the test chart obtained by reading in the test chart by the image reading device; a recording defect information acquisition device which acquires recording defect information indicating a recording element having a recording defect, of the plurality of recording elements; a density non-uniformity correction value calculation device which calculates density non-uniformity correction values for the plurality of recording elements, according to previously prepared output position information which indicates output positions of the plurality of recording elements with respect to the density pattern, the reading position information, the reading density information and the recording defect information; a density non-uniformity correction device which performs non-uniformity correction of image data, according to the density non-uniformity correction values; and an image output device which outputs the image data that has been subjected to the non-uniformity correction by the density non-uniformity correction device, onto the recording medium.