Patent ID: 8807681
Filing Date: 2014-08-19
Classification: B41J

Abstract:
1. An inkjet recording apparatus, comprising: an inkjet head which has nozzle rows having nozzles each of which ejects curable inks cured by imparted activation energy and which are arranged in a first direction at a pitch P, the nozzle rows being N (N≧5) nozzle rows of every color which eject, respectively, thick inks of four colors including cyan, magenta, yellow and black, and at least one light ink among light inks similar in color tone to the thick inks; an activation energy imparting device which imparts the activation energy to ink droplets ejected from the nozzles and deposited on a recording surface of a recording medium; a retention device which disposes and retains the inkjet head and the activation energy imparting device along a second direction orthogonal to the first direction; a scanning device which causes the retention device and the recording medium to relatively scan in the second direction; a movement device which causes the retention device and the recording medium to relatively move in the first direction in every scanning action by the scanning device; and a control device which forms an image on the recording surface of the recording medium while causing the inkjet head and the activation energy imparting device retained by the retention device to relatively scan each region of the recording medium; wherein the nozzles in each of the nozzle rows in the inkjet head are arranged so as to be shifted by P/N from each other in the first direction, a nozzle of an ink with lowest cure sensitivity is arranged on a most upstream side in a direction of movement of the recording medium relative to the inkjet head in the first direction, and further a nozzle of the light ink is arranged in between the nozzles of two different thick inks, and the control device causes the image to be formed on the recording surface of the recording medium by causing the inks of the nozzles which are arranged on a more upstream side in the direction of relative movement of the recording medium in the first direction to be laid on layers closer to the recording surface of the recording medium.