Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-04-04
1999-09-14
Hartary, Joseph
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 205, B41J 2175
Patent
active
059530294
ABSTRACT:
This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member containing an array of orifices. The substrate contains two linear arrays of heater elements, and each orifice in the nozzle member is associated with a vaporization chamber and heater element. The ink channels in the barrier layer have ink entrances generally running along two opposite edges of the substrate so that ink flowing around the edges of the substrate gain access to the ink channels and to the vaporization chambers.
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Childers Winthrop D.
Keefe Brian J.
McClelland Paul H.
Steinfield Steven W.
Trueba Kenneth E.
Hartary Joseph
Hewlett-Packard Co.
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