Patent ID: 7946689
Filing Date: 2011-05-24
Classification: B41J

Abstract:
1. A printhead, comprising: an aperture plate on a front side of the printhead; a diaphragm plate on a back side of the printhead; a body intermediate the aperture plate and the diaphragm plate; a chamber disposed within the body; a port boundary defining a port area to allow emission of fluid, the port boundary disposed on the diaphragm plate and adjacent the chamber; a peripheral partially-etched region coinciding with a first portion of the port boundary; and a peripheral non-etched region coinciding with a second portion of the port boundary; wherein the port boundary is fractured at the partially etched peripheral portion and bent at the non-etched peripheral portion, the non-etched peripheral portion structured to prevent separation of the diaphragm plate and a leaflet defined by the partial-etched portion.