US Patent 7517053 Printhead assembly with nested structure

A printhead assembly includes an elongate ink distribution assembly defining elongate ink ducts from which ink transfer ports extend. The ink distribution assembly further defines a recess in which a laminated stack structure is received in fluid communication with the ink transfer ports. The laminated stack structure has layers between which ink channels in fluid communication with the ports are interleaved. The laminated stack defines at least one cavity in which respective ink ejection print head integrated circuits (ICs) can be received in fluid communication with the ink channels.