Patent ID: 8007077
Filing Date: 2011-08-30
Classification: B41J

Abstract:
1. An inkjet head, comprising: a recording element substrate on which a plurality of sets of energy generating elements and a supply port are arranged in an arrangement direction, the energy generating elements being configured to generate energy to discharge ink from discharge ports, and the supply port facilitating supplying of ink to the discharge ports; and an orifice plate including the discharge ports, wherein the plurality of sets include a set having a first supply port disposed at a first edge of the recording element substrate and a set having a second supply port disposed at a second edge of the recording element substrate, the second edge being opposite the first edge with respect to the arrangement direction, wherein the distance between the second edge and the second supply port is shorter than the distance between the first edge and the first supply port with respect to the arrangement direction, and wherein a contact area between the recording element substrate and second channel walls that form a plurality of second ink channels communicating with the second supply port is larger than a contact area between the recording element substrate and first channel walls that form a plurality of first ink channels communicating with the first supply port.