Patent ID: 8814307
Filing Date: 2014-08-26
Classification: B41J

Abstract:
1. An image forming apparatus comprising: a transfer route configured to transfer a recording medium in a transfer direction; an inkjet head arranged above the transfer route and including a plurality of nozzles arrays, the plurality of nozzles arrays being arranged at positions offset from one another in the transfer direction and having nozzles configured to eject ink to form an image on the recording medium; and a controller configured to adjust ink ejection amounts from the nozzles in a downstream nozzle array on a basis of an ejection density of ink ejected from the nozzles in an upstream nozzle array on the recording medium, the downstream nozzle array being a nozzle array located downstream in the transfer direction among the plurality of nozzle arrays, the upstream nozzle array being a nozzle array located upstream in the transfer direction among the plurality of nozzle arrays, wherein the controller is configured to adjust the ink ejection amounts from the nozzles in the downstream nozzle array on a basis of a bypassing air flow degree calculated based on the ejection density and indicating a generation degree of a bypassing air flow generated when a transfer air flow generated by transfer of the recording medium bypasses a self-generated air flow generated by ink ejected from the nozzles in the upstream nozzle array.