公开(公告)号：US08967762B2

公开(公告)日：2015-03-03

申请号：US14309767

申请日：2014-06-19

Applicant: Electronics for Imaging, Inc.

Inventor： Luis Alejandro Jimenez ,  Peter Heath

IPC: B41J29/393 ,  B41J29/377

CPC classification number: B41J29/393 ,  B41J2/2142 ,  B41J29/377

Abstract: Image processing of printed patterns of arrays of dots generated by an array of inkjet heads uses a vision system, including an HD color camera that can be a fixed focus or include autofocus and zoom capabilities. Pattern recognition techniques are used to analyze as many patterns as necessary to perform multiple alignment functions, such as dot size, shape, and integrity; unidirectional, bidirectional, and step alignments; physical position and straightness of jet packs; flatness of platen or media belt; mapping imperfections in rods and rails of guiding systems; and checking jet alignments from a reference jet to all other jet packs. From such image analysis, correction values are generated that are used to effect manual or automatic adjustment of the inkjet heads physical position, voltage, temperature, and firing pulse timing and/or duration; and to position the printed dots fired from the nozzles in the inkjet heads in the appropriate position.

Abstract translation: 由喷墨头阵列产生的点阵列的印刷图案的图像处理使用视觉系统，包括可以是固定焦点的高清彩色相机，或包括自动对焦和变焦能力。 模式识别技术用于分析需要执行多个对齐功能的图案，如点大小，形状和完整性; 单向，双向和步进对齐; 喷气包的物理位置和平直度; 压板或介质带的平整度; 指导系统杆和导轨的映射缺陷; 并检查从参考射流到所有其他喷射包的喷射对准。 通过这种图像分析，生成用于实现喷墨头物理位置，电压，温度和点火脉冲定时和/或持续时间的手动或自动调节的校正值。 并且将从喷嘴喷射的印刷点定位在喷墨头中的适当位置。