Inkjet recording apparatus

An inkjet recording apparatus comprising:

• a conveyance mechanism which conveys a recording medium in a conveyance direction;
• an inkjet head having an ejection surface on which a plurality of ink ejection openings are formed, the ink ejection openings being arranged so that the inkjet head has a predetermined resolution in a direction perpendicular to the conveyance direction;
• a first movement mechanism which causes the inkjet head to make a first movement between an upstream position and a downstream position, the first movement being a movement in the conveyance direction, the upstream position and the downstream position sandwiching therebetween a predetermined position along the conveyance direction;
• a first movement printing controller which controls:
• the conveyance mechanism so that a recording medium stops at such a position that the recording medium faces the ejection surface of the inkjet head positioned at the predetermined position;
• and then the inkjet head and the first movement mechanism so that the inkjet head, while making the first movement, ejects ink to the stopped recording medium;
• a second movement mechanism which causes the inkjet head to make a second movement which is a movement in the direction perpendicular to the conveyance direction;
• a second movement printing controller which controls:
• the conveyance mechanism so that a recording medium stops at the position where the recording medium faces the ejection surface of the inkjet head positioned at the predetermined position;
• the inkjet head and the first movement mechanism so that the inkjet head, while making the first movement in one direction, ejects ink to the stopped recording medium;
• the second movement mechanism so that the inkjet head makes the second movement for one-half of a distance corresponding to the predetermined resolution;
• and then the inkjet head and the first movement mechanism so that the inkjet head, while making the first movement in the opposite direction to that one direction, ejects ink to the stopped recording medium, and
• a mode instructor which instructs, in a switchable manner, which one of the first movement printing controller and the second movement printing controller is to be active.