Patent ID: 6371600
Filing Date: 2002-04-16
Classification: B41J

Abstract:
A nozzle plate for a thermal ink jet printer comprising:a polymeric body having a pair of substantially parallel surfaces; said body having a plurality of passages extending therethrough from one of said substantially parallel surfaces to the other of said substantially parallel surfaces; each of said passages having a rectangular configuration continuously converging from said other surface to said one surface; each of said passages defining a nozzle orifice at said one surface of said body; said body having said other surface adapted to be attached to a semiconductor substrate having rectangular shaped resistors for disposition in each of said passages when attached to the semiconductor substrate; said passage at said other surface being only slightly larger than the resistor disposed therein; said body having a plurality of ink flow channels communicating at one end with an ink supply source; and each of said ink flow channels communicating at its other end with one of said passages adjacent said other surface of said body, each of said passages having at least one of said ink flow channels communicating therewith.