Support structure with alternating segments

摘要

A printhead assembly for an ink jet printer has an elongate support structure ( 1 ) with alternating segments of different materials ( 3, 4 ). The segments are bonded end to end. The materials may have different coefficients of thermal expansion. The support member materials ( 3, 4 ) are selected and structurally configured so that the effective coefficient of thermal expansion of the support member as a whole substantially matches that of a printhead substrate material.