Ink jet printhead assembly with non-emitting orifices

Details Ink jet printhead assembly with non-emitting orifices Ink jet printhead assembly with non-emitting orifices

1996-06-03

1999-08-17

Hartary, Joseph

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 67, 347 94, B41J 2135

Patent

active

059400960

ABSTRACT:
The invention is directed to an ink jet printhead assembly for jetting a supply of ink onto a print medium. A printhead includes a substrate and a plurality of heater elements mounted on the substrate. A nozzle plate is attached to the printhead. The nozzle plate and/or substrate includes an ink feed channel and a plurality of ink chambers. The nozzle plate includes a plurality of ink emitting orifices and a plurality of non-emitting orifices. Each ink emitting orifice is associated with a respective one of the ink chambers and is positioned adjacent to a respective one of the heater elements. Each ink chamber is in fluid communication with the ink feed channel at a first fluid port and in fluid communication with a respective one of the non-emitting orifices at a second fluid port.

REFERENCES:
patent: 4542389 (1985-09-01), Allen
patent: 4550326 (1985-10-01), Allen et al.
patent: 4578687 (1986-03-01), Cloutier et al.
patent: 4646110 (1987-02-01), Ikeda
patent: 4914562 (1990-04-01), Abe et al.
patent: 4914736 (1990-04-01), Matsuda
patent: 4980703 (1990-12-01), Sakurai
patent: 4994825 (1991-02-01), Saito et al.
patent: 5198834 (1993-03-01), Childers
patent: 5374948 (1994-12-01), Saito et al.

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