Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1995-03-16
1997-10-28
Fuller, Benjamin R.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 61, B41J 205
Patent
active
056821883
ABSTRACT:
A thermal inkjet printhead includes unpassivated heater resistors whose resistive material is doped, preferably with oxygen, nitrogen or an equivalent dopant, for increasing the resistance of the material. By increasing the resistance of the resistive material through doping, the drive currents for generating heat within the resistors need not be changed from levels which inkjet printers are presently designed to work with. The printhead of the invention can thus be used in place of a standard printhead without modification to the printer.
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Hanson Eric G.
Meyer Neal W.
Pan Alfred
Weberg Glenn W.
Fuller Benjamin R.
Hallacher Craig A.
Hewlett--Packard Company
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