Patent ID: 6315385
Filing Date: 2001-11-13
Classification: B41J

Abstract:
A method for assembling a thermal ink jet printhead, comprising:providing a non-uniformly thick electroformed orifice plate having:a thin area;a thick area that defines projections on the thin area; andorifices defined through the orifice plate;providing a printhead die having:transducers on a substrate, each transducer for matching to one of the orifices; anda barrier layer applied on the substrate and developed to define ink channels and ink chambers for delivering ink to the transducers and also to define at least a locator;applying an amount of adhesive to one of the orifice plate and the barrier layer;attaching the orifice plate to the printhead die so that the projections on the orifice plate mesh with the locator of the barrier layer to form a printhead and to substantially hold the orifice plate and the printhead die in place to align each orifice with a corresponding transducer; andbaking the printhead to allow the orifice plate to be bonded to the printhead die.