This paper is concerned with the quality of lines and disperse ink in printing patterns on different untreated polyester fabric constructions. The lines running in the weft and warp directions were printed on polyester fabric constructions, and printing accuracy was assessed. Ink spreading is one of the important factors that influences the ink distribution. Thus, in order to acquire satisfactory ink‐jet printing products, it is essential to control the spreading of ink on the polyester fabric. To meet these conditions, a series of chemicals (disperse dye 5.01 wt%, PVP‐K30 0‐2 wt%, DEG 5‐20 wt%, water 64.17‐79.17 wt%, etc) with different mass fractions was used to prepare disperse ink. The jetting behaviour of ink was related to its surface tension and viscosity, which was characterised by an automatic surface tensiometer and rotational viscometer. Line profile was used to evaluate the printing effect. Low field nuclear magnetic resonance and three‐dimensional super depth digital microscopy were used to reveal the relationships between the state of water, ink diffusion behaviour and printing sharpness. The results showed that increasing ink viscosity or decreasing free water content is advantageous to improve the sharpness of the printing pattern. The effects of fabric structural parameters on line image quality are discussed. The printing quality was closely related to the weight and structure of fabric. The heavy weight fabrics had accurate print pattern sharpness. The fastness test results showed that the ink printing pattern had good colour fastness.

中文翻译：

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油墨粘度，水和织物结构对喷墨印刷聚酯质量的影响

本文关注的是线条的质量以及将墨水分散在不同未经处理的聚酯织物结构上的印刷图案中。沿纬向和经向延伸的线被印刷在聚酯织物结构上，并评估了印刷精度。墨水扩散是影响墨水分布的重要因素之一。因此，为了获得令人满意的喷墨打印产品，必须控制油墨在聚酯织物上的铺展。为了满足这些条件，使用了具有不同质量分数的一系列化学品（分散染料5.01 wt％，PVP-K30 0-2 wt％，DEG 5-20 wt％，水64.17-79.17 wt％等）来制备分散剂墨水。油墨的喷射行为与其表面张力和粘度有关，其特征在于自动表面张力计和旋转粘度计。线轮廓用于评估印刷效果。利用低场核磁共振和三维超深度数字显微镜揭示了水状态，墨水扩散行为和印刷清晰度之间的关系。结果表明，提高油墨粘度或降低自由水含量有利于提高印刷图案的清晰度。讨论了织物结构参数对线图像质量的影响。印刷质量与织物的重量和结构密切相关。重磅织物具有精确的印刷图案清晰度。色牢度测试结果表明，油墨印刷图案具有良好的色牢度。利用低场核磁共振和三维超深度数字显微镜揭示了水状态，墨水扩散行为和印刷清晰度之间的关系。结果表明，提高油墨粘度或降低自由水含量有利于提高印刷图案的清晰度。讨论了织物结构参数对线图像质量的影响。印刷质量与织物的重量和结构密切相关。重磅织物具有精确的印刷图案清晰度。色牢度测试结果表明，油墨印刷图案具有良好的色牢度。利用低场核磁共振和三维超深度数字显微镜揭示了水状态，墨水扩散行为和印刷清晰度之间的关系。结果表明，提高油墨粘度或降低自由水含量有利于提高印刷图案的清晰度。讨论了织物结构参数对线图像质量的影响。印刷质量与织物的重量和结构密切相关。重磅织物具有精确的印刷图案清晰度。色牢度测试结果表明，油墨印刷图案具有良好的色牢度。结果表明，提高油墨粘度或降低自由水含量有利于提高印刷图案的清晰度。讨论了织物结构参数对线图像质量的影响。印刷质量与织物的重量和结构密切相关。重磅织物具有精确的印刷图案清晰度。色牢度测试结果表明，油墨印刷图案具有良好的色牢度。结果表明，提高油墨粘度或降低自由水含量有利于提高印刷图案的清晰度。讨论了织物结构参数对线图像质量的影响。印刷质量与织物的重量和结构密切相关。重磅织物具有精确的印刷图案清晰度。色牢度测试结果表明，油墨印刷图案具有良好的色牢度。