Redundant nozzle dot matrix printheads and method of use
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United States of America Patent
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Jun 17, 1997
Grant Date -
N/A
app pub date -
Jul 20, 1994
filing date -
Jul 20, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for ink-jet printing provides a redundancy strategy. A number of drop generators within the printhead is added to the standard array, providing redundant orifices in the nozzle plate at the ends of each column of orifices. In operation, the printhead is shifted regularly or pseudo-randomly such that a different set of nozzles prints adjacent swaths or pixels of a swath in multi-pass or multi-dot per pixel printing.
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