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印刷条形码有哪些技术要求?

条形码要使条形码能够被条形码识别仪正确识别,要求条形码线条直,不能断线,线条边缘要平滑锐利,不能出现锯齿,线条之间距离符合标准,线条黑度要足,反差要大。条形码的技术要求主要有:

Bar code to make bar code to be able to be correctly identified by bar code recognition, bar code lines straight, not broken lines, line edge to smooth and sharp, no saw teeth, line distance meets the standard, line blackness to foot, the contrast to large。 The technical requirements of bar code are mainly:

  1. 大小缩放。条形码通常是原大直接印刷,而要放大或缩小印刷要按EAN组织的技术要求,不可随意进行,一般规定其缩放倍率应控制在80%~200%。条形码缩放率对印刷合格率影响极大,因此,缩放印刷好由条形码软片的提供机构完成。

  2. QQ截图20170929174845.jpg

1。 size zoom。 Bar code is usually the original large direct printing, and to enlarge or reduce the printing to the technical requirements of the EAN organization, can not be carried out at will, generally stipulates that the scaling rate should be controlled from 80% to 200%。 The scaling rate of bar code has a great influence on the pass rate of printing。 Therefore, it is better for the scale printing to be completed by the bar code film supplier。

2.颜色搭配。由于条形码的识读系统规定一般扫描器光源是波长为630nm~700nm的红光光源,所以要考虑墨色的红光效应。扫描器的入射光照射在不同颜色条形码表面,会发生不同效果的反射。黑墨可完全吸收红光,印品对入射光的反射率在3%以下,是安全理想的条形码用色;白墨对红光则会完全反射,其印品对入射光的反射率接近100%,是安全的空白用色,因此条形码一般都印成黑白相间的单色。

2. color matching. Because the bar code recognition system stipulates that the general scanner source is a red light source with a wavelength of 630nm to 700nm, the red light effect of the ink color should be considered. The incident light of the scanner irradiated on the surface of different color barcodes will produce different effects of reflection. Black ink can fully absorb red light. The reflectivity of the printed matter to the incident light is less than 3%. It is the most safe and ideal bar code color. The white ink will reflect the red light completely. The print to the incident light is close to 100%, it is the safest blank color, so the bar code is usually printed in black and white monochrome.

3.对承印物的要求。在光学特性方面,为保证扫描光源45°角入射和15°反射,要求承印物具有良好的光散特性。在材料方面,纸类承印物一般以纸本身的白色基底为空白色,对于纸的白度、不透明度、光泽度均有一定的要求。

3. the requirements for the seal. In terms of optical properties, in order to ensure that the scanning light source has a 45 degree angle incidence and 15 degree reflection, the substrate is required to have good light dispersion characteristics. In terms of materials, paper substrates are generally white on the white surface of the paper itself, and have certain requirements for whiteness, opacity and gloss of paper.


 
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