METHOD AND APPARATUS FOR SINGLE-PASS FAILED NOZZLE COMPENSATION

摘要

Compensation algorithms are applied to hide failed nozzles or, at least, reduce the objectionable effect of such nozzles in a printed image. Once a failed nozzle or under-performing nozzle is detected in a single-pass printing system, it is shut-off and the image data that was intended to be printed by this nozzle is redistributed to its neighboring nozzles. Embodiments of the invention use of a 1-D look-up table and stochastically distribute the duty cycle to each neighboring nozzle. In this way, failed nozzles are effectively hidden in the final print.

主权项

1. A computer implemented method for single-pass failed, malfunctioning, or underperforming nozzle compensation, comprising:
detecting at least one failed, malfunctioning, or underperforming nozzle in a single-pass printing system; substantially shutting-off said failed, malfunctioning, or underperforming nozzle; and with a processor, redistributing image data that was intended to be printed by said failed, malfunctioning, or underperforming nozzle to at least two nozzles that are proximate to said failed, malfunctioning, or underperforming nozzle, distributing image data to each of said proximate nozzles.