LIQUID EJECTION HEAD UNIT, METHOD FOR MANUFACTURING LIQUID EJECTION HEAD UNIT, AND LIQUID EJECTION APPARATUS

摘要

There is provided with a liquid ejection head unit, a method for the liquid ejection head unit, and a liquid ejection apparatus in which liquid ejection heads can be positioned with high precision and the liquid ejection heads can easily be replaced. There are also inclined ink jet printing heads having nozzle rows in which nozzle openings are arranged and a platform mounted with the ink jet printing heads. The platform includes a first reference hole which is formed in each of the ink jet printing heads by photolithography and to which each ink jet printing head is positioned.