Printhead assembly with relative thermal expansion inhibition

摘要

A printhead assembly includes an elongate support member. An elongate ink delivery member is mounted in the support member and defines a number of ink delivery conduits extending along the support member and a series of patterned holes in fluid communication with the ink delivery conduits. A series of printhead modules is engaged with the support member and positioned end-to-end along the support member. Each printhead module includes an ink distribution structure in fluid communication with the holes of the ink delivery member and a printhead integrated circuit mounted on the ink distribution structure to receive ink from the ink distribution structure. A substrate of the printhead integrated circuit and the support member have substantially the same coefficient of thermal expansion.