Patent ID: 8061818
Filing Date: 2011-11-22
Classification: B41J

Abstract:
1. An ink jet recording head comprising: ejection energy generating elements for ejecting ink; flow passages for supplying the ink from an ink supply port to said ejection energy generating elements through a common liquid chamber; a partition wall formed between two adjacent flow passages; a member disposed between said partition wall and the ink supply port; and an opening formed between said partition wall and said member, wherein a flow resistance in said opening from one of the two adjacent flow passages to the other of the two adjacent flow passages is less than that in the opening from the other of the two adjacent flow passages to the one of the two adjacent flow passages, wherein said partition wall has a first ink supply port-side end facing the one of the two adjacent flow passages and a second ink supply port-side end facing the other of the two adjacent flow passages, the first and second ink supply port-side ends having different distances from the ink supply port, wherein the other of the two adjacent flow passages has a distance, from the ink supply port to an associated ejection energy generating element, shorter than that of the one of the two adjacent flow passages, and wherein the first ink supply port-side end is more distant from the ink supply port than the second ink supply port-side end.