Ink jet print head adapted to minimize orientation-induced...

Details Ink jet print head adapted to minimize orientation-induced... Ink jet print head adapted to minimize orientation-induced...

2008-07-22

2008-07-22

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

11322868

ABSTRACT:
Ink jet print head adapted to minimize orientation-induced line-width variation. The print head having n+1 nozzles. The n nozzles are located at vertices of a polygon having an average side length savgand one nozzle located at a center of the polygon. Each side length of the polygon is less than 20% deviation from the average side length savg. The n+1 nozzles are configured to ink jet a line having a line-width w; and each of the n+1 nozzles is configured to ink jet a spot having an average area-equivalent spot diameter d which satisfies the inequality conditions (I)in-line-formulae description="In-line Formulae" end="lead"?0.7w≦d+(n/π)savg≦1.3w.  (I)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 6010208 (2000-01-01), Powers et al.
patent: 6045214 (2000-04-01), Murthy et al.
patent: 2004/0052569 (2004-03-01), Bich et al.

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