Ink jet printer having print head with partial nozzle...

Details Ink jet printer having print head with partial nozzle... Ink jet printer having print head with partial nozzle...

2005-09-29

2008-03-04

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

07338144

ABSTRACT:
An ink jet printer has a print head with partial nozzle redundancy. All of the nozzles are used for printing, but at a less than maximum available ejection output. When a failed or impaired nozzle is identified, the normal ejection output is increased for neighboring nozzles, so that pixels to be printed by the impaired nozzle are printed by neighboring nozzles at previously blank pixels. Printing pixels by neighboring non-failed nozzles mitigates the visible effect of the nozzle failure and prevents loss of productivity.

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