Herstellungsverfahren eines Druckkopfes.

摘要

A "roofshooter" pagewidth printhead for use in a thermal ink jet printing device is fabricated by forming a plurality of subunits (55), each being produced by bonding a heater substrate (28) having an array of heater elements (34) and an etched ink feed slot (20) to a secondary substrate (50) having a series of spaced ink feed port (51) to form a combined substrate, in which the series of port communicates with the ink feed slot (20), and dicing the combined substrate transversely to the slot to form a subunit (55). An array of butted subunits (55) having a length equal to one pagewidth is formed by butting at least one of the subunits (55) against another adjacent subunit (55). The array of butted subunits (55) is bonded to a pagewidth support substrate (60). The secondary substrate (50) provides an integral support structure for maintaining the alignment of the heater plate (28) which, if diced through the feed hole without the secondary substrate (50), would separate into individual pieces, thereby complicating the alignment and assembly process.