Patent ID: 8567912

Claim:
An inkjet printhead comprising: (I) an inkjet printhead die comprising a composite substrate, the composite substrate including: (i) a single planar semiconductor member comprising: (a) a first surface having a first width dimension and a first length dimension; (b) a first ink feed hole; (c) a second ink feed hole; and (d) an array of nozzles disposed on the first surface; (ii) a planar substrate member comprising: (a) a first channel including a bottom; (b) a second channel including a bottom, the second channel being disposed substantially at a distance d from the first channel; (c) a second surface that is opposite the first surface of the planar semiconductor member, the second surface having a second width dimension and a second length dimension; wherein the first width dimension and the first length dimension of the first surface of the single planar semiconductor member are respectively the same as the second width dimension and the second length dimension of the second surface of the planar substrate member; (d) a first ink connection hole extending from the bottom of the first channel to the second surface; and (e) a second ink connection hole extending from the bottom of the second channel to the second surface, wherein a distance D between the first ink connection hole and the second ink connection hole is greater than the distance d; and (iii) an interface at which the single planar semiconductor member is fused to the planar substrate member; (II) a mounting substrate bonded to the second surface of the inkjet printhead die, the mounting substrate including: (i) a first ink port that is fluidically connected to the first ink connection hole of the inkjet printhead die; and (ii) a second ink port that is fluidically connected to the second ink connection hole of the inkjet printhead die; and (III) an ink source that is fluidically connected to the first ink port.