an inkjet printer printhead has a layering of a flexible polymer tape , a patterned barrier material that is acting as an adhesive as well as ink channels , and a substrate that has a plurality of ink expulsion devices . each of the ink propulsion devices is aligned with an orifice hole ablated in the flexible polymer tape where the ink expels and patterns the medium beyond . to keep adhesives and encapsulants required in the assembly of the inkjet printer printhead out of the critical ink channel area near the orifice holes , fluid accumulation channels are ablated into the flexible polymer tape in a strategic location between the adhesive bead and the ink channel . these accumulation channels function as both a diversion a containment point for the excess flow of adhesive .