Patent ID: 7517052
Filing Date: 2009-04-14
Classification: B41J

Abstract:
1. An ink-jet head comprising: at least first and second head chips, each of the first and second head chips including ports arranged at least along first and second rows having end portions, the first and second rows adjoining each other, wherein at least one of the first row of ports includes a first discharge port selectively configured to discharge a first color ink, wherein at least one of the second row of ports includes a second discharge port selectively configured to discharge a second color ink having a different color from the color of the first color ink, wherein the first and second head chips adjoin each other such that the first and second rows of ports of the first head chip are staggered relative to the first and second rows of ports of the second head chip at their end portions along a direction in which the ports are disposed, wherein at the end portions of the first and second head chips, the first discharge port of the first head chip overlaps with the second discharge port of the second head chip in a direction orthogonal to the direction in which the ports are disposed, and the second discharge port of the first head chip does not overlap with the first discharge port of the second head chip in a direction orthogonal to the direction in which the ports are disposed, and wherein landing of droplets discharged from the ports at the end portions of the first and second head chips on a recorded material is performed firstly with respect to the first color ink, and then with respect to the second color ink, in order.