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1. (WO2018077536) METHOD OF MINIMIZING STITCHING ARTIFACTS FOR OVERLAPPING PRINTHEAD SEGMENTS

Pub. No.:    WO/2018/077536    International Application No.:    PCT/EP2017/073372
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: B41J 2/21
B41J 19/14
G06K 15/10
H04N 1/407
Applicants: MEMJET TECHNOLOGY LIMITED
Inventors: LAU, Daniel
Title: METHOD OF MINIMIZING STITCHING ARTIFACTS FOR OVERLAPPING PRINTHEAD SEGMENTS
Abstract:
A method of printing an image using a printing system having first and second overlapping printhead segments. The method includes the steps of: (i) identifying a strip of the image to be printed in an overlap region of the first and second printhead segments; (ii) determining a continuous seam in the strip based on a cost function, the cost function including a parameter selected from the group consisting of: (a) minimizing a density of printed ink along the seam; and (b) maximizing a luminance along the seam; and (iii) printing the image using the first and second printhead segments, the printing including stitching the first and second printhead segments across the seam. The strip contains variable image content and the seam has a varying position within the strip.