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印刷条形码的需要达到什么要求?

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:
The bar code to make barcode can be barcode recognition instrument recognition, bar code requirements of straight lines, not broken, line edge to smooth sharp, jagged lines cannot, the distance between the lines to meet the standard, the blackness of foot, contrast to. The technical requirements of bar code mainly include:
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。
1. size zoom. Bar code is usually the original large direct printing, and to enlarge or reduce the printing, according to the technical requirements of the EAN organization, can not be arbitrarily carried out, the general provisions of its zoom ratio should be controlled at 80% ~ 200%. The bar code scaling rate has a great effect on the printing pass rate, so scaling printing is best done by the barcode film provider.
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。

QQ截图20170929174730.jpg2. color matching. The reading system of bar code scanner light source is the general provisions of 630nm ~ 700nm wavelength red light source, it should consider the effect of red ink. The incident light of the scanner is irradiated on different color bar code surfaces, and different effects will occur. Charged to the complete absorption of light, prints on the incident light reflection at 3%, is the most ideal for the bar code with color; white ink to red light will be completely reflected, reflectance of the prints on the incident light close to 100%, the safe use of color is blank, so the bar code are generally 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. requirements for substrates. In the aspect of optical characteristics, the substrate has good light scattering characteristics in order to guarantee the scanning light source to be 45 degrees angle and 15 degree reflection. In the material, paper substrate in white base paper itself is empty for white, whiteness, opacity and gloss of paper have certain requirements.
本文由山东印刷包装友情提供知识支持,更多的精彩内容请点击我们的官方网站:http://www.sdyszb.com
This article provides knowledge support from Shandong printing and packaging friendship, and more exciting content please click on our official website: http://www.sdyszb.com

 
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