Image forming apparatus

摘要

An image forming apparatus that forms an image where occurrence of concentration unevenness caused by occurrence of mechanical crosstalk is suppressed are provided. According to the present invention, the distance from the boundary position of the inkjet head corresponding to the concentration boundary between the first concentration region and the second concentration region to the second concentration region end of the inkjet head is less than the reciprocal of the spatial frequency of the concentration unevenness. Accordingly, the length of the part in the first direction where the inkjet head forms the second concentration region is less than one period of the concentration unevenness. Even if crosstalk due to vibrations of the part where the inkjet head forms the first concentration region occurs, the visibility of the concentration unevenness occurring in the second concentration region can be reduced.

主权项

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.