Printhead module assembly

摘要

A printhead module for a printhead assembly incorporating a number of modules spaced across a pagewidth in a drop on demand ink jet printer includes an upper micro-molding and a lower micro-molding separated by a mid-package film layer. The mid-package film layer has laser ablated holes and an adhesive layer on both faces providing adhesion between the upper micro-molding, the mid-package film layer and the lower micro-molding. The upper and lower micro-moldings are held in alignment by pins passing through corresponding apertures in the mid-package film layer. Ink inlets and an air inlet are provided in the underside of the lower micro-molding. Ink and air passes from the lower micro-molding, through the mid-package film layer to the upper micro-molding. Air exists the upper micro-molding to repel the print media from the printhead during printing. The ink passes from the upper micro-molding into individual print chips mounted therein.