Patent ID: 8167408
Filing Date: 2012-05-01
Classification: B41J,Y10T

Abstract:
1. An ink jet recording head comprising: a recording element substrate having an ejection outlet for ejecting ink; an electric wiring member connected to said recording element substrate at an electrical connecting portion to supply electric power to said recording element substrate, said electric wiring member including an array of leads; a supporting portion for supporting said recording element substrate and said electric wiring member, said supporting portion including a surface supporting said electric wiring member and a recessed bottom surface for supporting said recording element substrate, wherein said electric wiring member is supported such that an upper surface thereof is at a position higher than an upper surface of said recording element substrate; a sealed region of sealing material sealing said electric wiring member, said sealed region covering a part of the upper surface of said electric wiring member, the electrical connecting portion, a part of the upper surface of said recording element substrate, and said array of leads; and a projection provided between said electric wiring member and said recording element substrate at an end, with respect to a direction of arrangement of said array, of said array in said sealed region, wherein an upper surface of said projection is at a different level than the upper surface of said recording element substrate, and a level difference between the upper surface of said projection and the upper surface of said recording element substrate is less than a level difference between the upper surface of said recording element substrate and the upper surface of said electric wiring member.