In recent years, words such as "intelligent printing", "cloud printing", "intelligent printing", "printing industry 4.0" and "printing industry Internet" have flooded various media, making printers excited about the bright future and confused about how to start. Today, Jinan printing factory will introduce the factors that affect the visual defect detection of printing machines.
1. Paper snake running problem caused by equipment fluctuation
In the printing process, with the fluctuation of tension and speed, the paper will produce snake running phenomenon in the process of moving forward, which is manifested in different degrees of stretching in the movement direction and different degrees of offset in the width direction, which makes it difficult to collect and compare images.
2. Handling problems after testing
Testing is only a means of quality management, the purpose of testing is to guide production, timely eliminate the occurrence of continuous waste; at the same time, it should also provide judgment basis for finished products. At present, most of the online detection systems at home and abroad have not put forward a better scheme.
3. Printing material problems
In addition to common white cardboard and coated paper, there are also a large proportion of transfer paper (including gold and silver cardboard, laser paper). In addition to printing on paper, there are post printing processes such as plain gilding, holographic positioning bronzing, etc., whose strong reflection characteristics make it difficult to test under ordinary lighting conditions; moreover, the low chromatic aberration of embossed patterns also makes detection difficult.
These are the factors that affect the visual defect detection of printing machine. In addition, printing machine is the asset center of most printing enterprises, and printing efficiency determines the benefits of most enterprises. At present, in the printing process, there are still a lot of time wasted in adjusting registration, adjusting color, wiping blanket, washing plate.
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