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The main factors that lead to color distortion in packaging box printing and how to distinguish.

2022-10-21 17:33:28
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Box printing 


There have been many sets of color management systems in the packaging and printing industry, which have certain control over the color of color packaging box printing. Printers are committed to helping printing and packaging enterprises improve their technological level and industry competitiveness through the services of the organization. Today, Xiaobian and you will take a look at the main factors that lead to the color distortion of packaging box printing and how to identify them.


The main factor that causes color distortion


① Color reduction processing causes color distortion


Modern printing usually uses C, M, Y, K four-color ink to reproduce color, because of the purity of the ink itself, so the printing overprint will also produce color distortion.


② Color separation processing causes color distortion


Printing usually uses C, M, Y, K four-color ink to copy color, and the digital acquisition equipment to collect the computer image information is usually R, G, B information, so before printing and platemaking need to convert the image information into C, M, Y, K mode, that is, color separation processing. The so-called "color separation" is to decompose the color information of each pixel of the image (generally R, G, B color information) into the color information suitable for printing C, M, Y, K mode.


Color information will be lost in the process of color separation. In the color separation, only according to the printing ink, paper and other printing suitability, the correct setting of color separation parameters (such as setting dot expansion value, gray balance parameters, black plate level, etc.), it is possible to output high quality color separation, as far as possible to reduce the loss of color information.


③ There is color distortion in the original manuscript


The original print image is mostly obtained by photographic means. For the original photo, in addition to the color distortion caused by improper operation in the shooting process, because the color is reproduced by color materials such as color materials, and color attenuation is easy to occur, so it may also cause the color distortion of the photo.


In addition, with the increasing popularity of digital cameras, digital image manuscript more and more, and the technical requirements of digital cameras on operators greatly improved, due to the poor technical level of operators, the shot image is prone to dull picture, image blur and other problems, resulting in the original color distortion.


④ Color distortion caused by scanning processing


The image density of the original photo is continuous, so the image information needs to be collected into the computer. When scanning the image with scanning equipment, the image needs to be divided into discontinuous pixels, and R, G and B information of each pixel on the manuscript is collected point by point and line by line.


In the process of scanning, it will cause the loss of pixel color information, and the image processing is based on the collected image information, all the operations about color are also carried out on this basis, and can not increase the color information of the image. Therefore, for the photo manuscript, scanning is a very key link in image processing, improper operation will cause image color distortion.


Through the above introduction, I believe that you have a certain understanding of the main factors that lead to the color distortion of packaging box printing and how to distinguish. Packaging box printing manufacturer Jiangmen Ruifeng Industrial Co., Ltd. specializes in the production of printing packaging decoration color boxes and other kinds of grams of color cards, self-adhesive printing, color box, carton, outer box, manual packaging box printing, looking forward to cooperation and communication with all circles!


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