Inkjet recording apparatus and recording method

摘要

According to one embodiment, an inkjet recording apparatus includes a plurality of inkjet heads of a multi-drop method, a first controller, and a second controller. The first controller controls ejection of ink drops from a first inkjet head for ejecting a first ink for which print resolution is required, in a manner that a number of ink dots formed in a main scanning direction is great, and that the number of ink drops ejected for each one of the ink dots is small. The second controller controls ejection of the ink drops from a second inkjet head for ejecting a second ink for which coverage over a recording surface of the recording medium is required, in a manner that a number of ink dots formed in the main scanning direction is small, and that the number of ink drops ejected for each of the ink dots is great.

主权项

1. An inkjet recording apparatus comprising:
a plurality of inkjet heads of a multi-drop method, each of which controls a diameter of each ink dot formed on a recording medium by changing a number of ink drops to sequentially eject; a first controller which controls ejection of the ink drops from a first inkjet head for ejecting a first ink for which print resolution is required, among the plurality of inkjet heads, in a manner that the number of the ink dots formed in a main scanning direction as a printing direction during relative movement between the recording medium and the inkjet heads is increased, and that the number of ink drops ejected for each one of the ink dots is decreased; and a second controller which controls ejection of the ink drops from a second inkjet head for ejecting a second ink for which coverage over a recording surface of the recording medium is required, among the plurality of inkjet heads, in a manner that the ink drops in the main scanning direction are ejected at a resolution lower than the first inkjet head, that the ink drops in a sub-scanning direction which is perpendicular to the main scanning direction are ejected at the same resolution as the first inkjet head, that the number of the ink dots formed in the main scanning direction is decreased, and that the number of ink drops ejected for each one of the ink dots is increased.