Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1998-10-19
2000-11-14
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 28, B41J 2165
Patent
active
061459526
ABSTRACT:
Self-cleaning printer and method of assembling same. The printer comprises a print head defining a plurality of ink channels therein, each ink channel terminating in an ink ejection orifice. The print head also has a surface thereon surrounding all the orifices. Particulate matter may reside on the surface and also may completely or partially obstruct the orifice. Therefore, a cleaning assembly is disposed relative to the surface and/or orifice for directing a flow of fluid along the surface and/or across the orifice to clean the particulate matter from the surface and/or orifice. The cleaning assembly includes a septum disposed opposite the surface or orifice for defining a gap therebetween. Presence of the septum accelerates the flow of fluid through the gap to induce a hydrodynamic shearing force in the fluid. This shearing force acts against the particulate matter to clean the particulate matter from the surface and/or orifice. A pump in fluid communication with the gap is also provided for pumping the fluid through the gap. As the surface and/or orifice is cleaned, the particulate matter is entrained in the fluid. A filter is provided to separate the particulate matter from the fluid.
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Delametter Christopher N.
Meichle Michael
Quenin John A.
Sharma Ravi
Eastman Kodak Company
Hsieh Shih-Wen
Le N.
Stevens Walter S.
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