Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-03-05
2000-08-08
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 40, B41J 221, B41J 2145, B41J 215
Patent
active
060991089
ABSTRACT:
A method and apparatus for improving ink-jet print quality uses a print head having an array using a plurality of nozzles in sets in each drop generator mechanism. Where a conventional ink-jet pen fires a single droplet of ink at a pixel per firing cycle, the present invention fires a plurality of droplets at different subdivisions of pixels. The particular array design may vary from ink-to-ink or pen-to-pen. Each drop generator of a print head array includes a plurality of nozzles wherein each of the nozzles has an exit orifice with an areal dimension, and produces an ink droplet that produces a dot on adjacent print media wherein the dot has an areal dimension, less than the areal dimension of a pixel to be printed. Dots are printed in a pattern for each pixel wherein print quality is achieved that approximates a higher resolution print made by conventional ink-jet methodologies.
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Davis Colin C.
Harmon John Paul
McClellan Paul J.
Seccombe S. Dana
Waller David J.
Hewlett--Packard Company
Le N.
Nguyen Thinh
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