FORMED ORIFICE PLATE FOR INK JET PRINTING APPARATUS

摘要

Docket 6461 FORMED ORIFICE PLATE FOR INK JET PRINTING APPARATUS A formed orifice plate for use in an ink jet printing device is provided in which the orifice plate and the side walls of the liquid reservoir formed above the orifice plate to supply ink to the orifices, are of unitary construction and formed from a thin sheet of material. The side walls are backed by a member in order to prevent propagation of spurious vibrations from the orifice plate along the side walls and into the liquid contained in the reservoir. An alternative construction of unitary orifice plate is also provided in which the orifice plate has a generally W-shaped cross section and provides two separate reservoirs with multiple rows of orifices.