Patent ID: 8740352
Filing Date: 2014-06-03
Classification: B41J

Abstract:
1. An inkjet printing apparatus comprising: a carriage upon which is mounted one or more print heads with ink ejection ports formed thereon; a printing unit that prints an image onto a printing medium by causing ink droplets to be ejected toward the printing medium from the ink ejection ports while relative movement between the carriage and the printing medium is performed; and a recess portion formed outside of an area where the ejection ports are formed, in a conveyance direction in which the relative movement is performed, and recessed from a surface where the ejection ports are formed, wherein a cross-sectional area of the recess portion in a direction orthogonal to the conveyance direction at a center portion of the recess portion relative to the conveyance direction is less than a cross-sectional area of the recess portion in the direction orthogonal to the conveyance direction at an edge portion of the recess portion, and wherein the cross-sectional area of the recess portion in the direction orthogonal to the conveyance direction changes along the conveyance direction.