Patent ID: 7478476
Filing Date: 2009-01-20
Classification: B41J,Y10T

Abstract:
1. A method of manufacturing a printhead capable of printing smaller and larger drop-weight quantities of ink, the method comprising the steps of: providing a substrate; etching the substrate in order to define at least two substrate areas with different substrate thicknesses; applying a thin-film layer that contains at least one ink-energizing element in each of the substrate areas; etching a plurality of ink-supplying conduits in the thin-film layer; etching at least one ink-supplying trench in the substrate, said ink-supplying trench in fluid communication with at least some of the ink-supplying conduits; applying an orifice layer to the substrate, the orifice layer having an exterior-orifice-layer surface that is substantially planar such that there are at least two orifice areas with different orifice thicknesses that correspond to said two substrate areas with different substrate thicknesses, the at least two orifice areas being formed with different volumes to contain different drop-weight quantities of ink; and forming at least one firing chamber in each of said at least two orifice areas.