Patent ID: 6392685
Filing Date: 2002-05-21
Classification: B41J,H01L

Abstract:
A drive IC chip for a printhead comprising:a built-in integrated circuit for selectively driving a plurality of printing elements of the printhead; a primary surface including a first edge extending in a first direction, a second edge extending in a second direction transverse to the first direction, and a third edge opposite to the second edge; a first and a second pads provided on the primary surface in electrical connection to the integrated circuit, the first pad being rectangular to be elongated in the first direction, the second pad being rectangular to be elongated in the second direction; and a plurality of third pads for electrically connecting the integrated circuit to the plurality of printing elements, the third pads being arranged along the third edge; wherein the first and the second pads are provided at a corner at which the first and the second edges meet, the corner being spaced from the third edge; and wherein respective centers of the first and the second pads deviate positionally from each other in the first and the second directions.