Patent attributes
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 a first micro-molding and a second 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 first micro-molding, the mid-package film layer and the second micro-molding. The first and second 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 second micro-molding. Ink and air passes from the second micro-molding, through the mid-package film layer to the first micro-molding. Air exits the first micro-molding to repel the print media from the printhead during printing. The ink passes from the first micro-molding into individual print chips mounted therein.
