公开(公告)号：US09914309B2

公开(公告)日：2018-03-13

申请号：US14304824

申请日：2014-06-13

Applicant: ELECTRONICS FOR IMAGING, INC.

Inventor： Steven Billow ,  Leon Williams ,  Ghilad Dziesietnik

IPC: B41J2/21

CPC classification number: B41J2/2139 ,  B41J2/2054 ,  B41J2/2142 ,  B41J2/2146 ,  G06K15/102

Abstract: 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.

公开(公告)号：US20150360491A1

公开(公告)日：2015-12-17

申请号：US14304824

申请日：2014-06-13

Applicant: ELECTRONICS FOR IMAGING, INC.

Inventor： Steven BILLOW ,  Leon Williams ,  Ghilad Dziesietnik

IPC: B41J29/393

CPC classification number: B41J2/2139 ,  B41J2/2054 ,  B41J2/2142 ,  B41J2/2146 ,  G06K15/102

Abstract: 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.

Abstract translation: 应用补偿算法来隐藏失效的喷嘴，或者至少减少这种喷嘴在打印图像中的令人反感的效果。 一旦在单程打印系统中检测到失效的喷嘴或性能不良的喷嘴，就关闭，并且打算由该喷嘴打印的图像数据重新分布到其相邻的喷嘴。 本发明的实施例使用1-D查找表并随机地将占空比分配给每个相邻喷嘴。 以这种方式，故障喷嘴有效地隐藏在最终打印中。