Patent ID: 9193155
Filing Date: 2015-11-24
Classification: B41J

Abstract:
1. An image forming apparatus, comprising: an inkjet head which includes a plurality of nozzles arranged along a first direction; a concentration unevenness information acquisition device which, when forming an image including a first concentration region, and a second concentration region separated from the first concentration region by a concentration boundary and having a relatively lower concentration than the first concentration region has using the inkjet head, acquires concentration unevenness information on whether concentration unevenness is visible in a concentration boundary region in the second concentration region or not; and an adjustment device which, when the concentration unevenness information acquisition device acquires the concentration unevenness information representing that the concentration unevenness is visible, adjusts relative positions between the inkjet head and the image formed by the inkjet head to make a distance from a boundary position of the inkjet head in the first direction corresponding to a position of the concentration boundary in the first direction to a second concentration region end of the inkjet head in the first direction be less than a reciprocal of a spatial frequency of the concentration unevenness.