An image formation apparatus provided according to the present invention does not generate any printing density streaks in low density areas of an image and is therefore capable of outputting stabilized images without any density unevennesses and density streaks in any tonality. The apparatus is structured...http://www.google.com.au/patents/US5946006?utm_source=gb-gplus-sharePatent US5946006 - Method for correcting density unevenness for a recording head and an image formation apparatus provided with such a method