Printing apparatus and printing method

Abstract

The present invention provides a printing apparatus and a printing method capable of suppressing the quality of a printed image from decreasing. The printing apparatus includes: a first nozzle row in which nozzles ejecting dye ink of a certain color are arranged in a predetermined direction; a second nozzle row in which nozzles ejecting pigment ink of the certain color are arranged in the predetermined direction; and a control unit repeating an ejection operation of ejecting ink from the nozzles while moving the first and second nozzle rows relative to a medium in a movement direction intersecting the predetermined direction and a transport operation of moving the first and second nozzle rows relative to the medium in the predetermined direction to print an image in which a first image formed at a predetermined position on the medium by ejecting the dye ink and then ejecting the pigment ink while moving the first and second nozzle rows relative to the medium from one side to the other side of the movement direction, and a second image formed at a position on the medium different from the predetermined position ejecting the pigment ink and then ejecting the dye ink while moving the first and second nozzle rows relative to the medium from the other side to the one side of the movement direction are alternately arranged in the predetermined direction and in which an end portion of the first image overlaps with an end portion of the second image.

Description

technical field [0001] The present invention relates to a printing device and a printing method. Background technique [0002] As a printing device having a nozzle for discharging dye ink (ink liquid) and a nozzle for discharging pigment ink of the same color as the dye ink, there are known dye inks for discharging black color images for printing high-quality color images on special paper and especially An inkjet recording device using nozzles of black pigment ink for clearly printing characters and the like on plain paper (for example, refer to Patent Document 1). In such an inkjet recording device, the operation of conveying the medium in the conveying direction and the head in which the nozzle row for discharging dye ink and the nozzle row for discharging pigment ink are arranged side by side in the moving direction intersecting with the conveying direction of the medium are repeated in the moving direction. The action of ejecting ink from the nozzle while moving up. ...

AI Technical Summary

Problems solved by technology

If the order of the ink discharged in this way is reversed, the hue and density will be different between the part printed on the forward route and the part printed on the reciprocal route, and unevenness and stripes will occur in the printed image, resulting in a problem that the image quality will deteriorate.

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