Patent ID: 8079674
Filing Date: 2011-12-20
Classification: B41J

Abstract:
1. An ink jet recording head comprising: a recording element substrate provided on one side thereof with a plurality of ejection outlet arrays, each including a plurality of ejection outlets for ejecting recording liquid, and provided on the other side thereof with a plurality of supply ports for supplying the recording liquid to the ejection outlet arrays, respectively, said recording element substrate being provided with a plurality of heat generating elements; and a supporting member for supporting said recording element substrate by connecting with said other side of said recording element substrate through an adhesive, said supporting member having a plurality of supply passages for supplying the recording liquid to respective supply ports and a partition dividing a supply main passage into said plurality of supply passages, both sides of said partition constituting inner walls of adjacent liquid supply passages of said plurality of supply passages, wherein at least one side of said partition is provided with continual projections which include surfaces connected with said other side of said recording element substrate and which projects inwardly of said supply passages.