Support beam for printhead modules

摘要

A support beam ( 1 ) for mounting printhead modules ( 2 ) within an inkjet printer has a laminate structure with outer layers laminated to a core, the outer layers ( 3,4 ) being of the same material and the core ( 5 ) being of a different material such that the overall coefficient of thermal expansion of the support beam ( 1 ) is substantially equal to that of silicon. The thickness of each layer in the laminate structure is such that the support beam does not bend from differential thermal expansion.