In recent years, words like "intelligent printing", "cloud printing", "intelligent printing", "printing industry 4.0" and "printing industry Internet" have flooded all kinds of media, making printers excited for a bright future and confused for not knowing how to start. Today, let's introduce the factors that affect the visual defect detection of printing machine.

1、設(shè)備波動(dòng)造成的紙張蛇形跑動(dòng)問題

1. Paper snaking caused by equipment fluctuation

在印刷過程中，隨著張力和速度的波動(dòng)，紙張?jiān)谇斑M(jìn)過程中會(huì)產(chǎn)生蛇形跑動(dòng)現(xiàn)象，表現(xiàn)在運(yùn)動(dòng)方向的不同程度的拉伸，以及寬度方向的不同程度的偏移，給圖像的采集和對(duì)比造成困難。

In the printing process, with the fluctuation of tension and speed, the paper will produce serpentine running phenomenon in the process of moving, which is manifested in different degrees of stretching in the direction of motion and different degrees of deviation in the width direction, which makes it difficult to collect and compare images.

2、檢測(cè)后的處理問題

2. Problems after detection

檢測(cè)只是質(zhì)量管理的手段，檢測(cè)的目的是為了指導(dǎo)生產(chǎn)，及時(shí)杜絕連續(xù)廢品的發(fā)生;同時(shí)也應(yīng)當(dāng)為成品出廠提供判斷依據(jù)。目前在這方面國(guó)內(nèi)外多數(shù)在線檢測(cè)系統(tǒng)均未提出較好的方案。

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 the delivery of finished products. At present, most of the on-line detection systems at home and abroad have not put forward a better scheme.

3、印刷材質(zhì)問題

3. Printing material problems

印刷材質(zhì)除了常見的白卡紙、銅版紙外，還存在很大比例的轉(zhuǎn)移紙(包括金銀卡紙、鐳射紙)，紙上除了印刷外，還有素面燙金、全息定位燙金等印后工藝，其強(qiáng)反射特性給普通照明條件下的檢測(cè)帶來難度;而且壓凸圖案由于低色差特性也給檢測(cè)帶來困難。

In addition to the common white cardboard and coated paper, there are also a large proportion of transfer paper (including gold and silver cardboard and laser paper). Besides printing, there are also plain surface gilding, holographic positioning gilding and other post printing processes on the paper. The strong reflection characteristics bring difficulties to the detection under ordinary lighting conditions; and the low chromatic aberration characteristics also bring difficulties to the detection of embossed patterns.

以上就是影響印刷機(jī)器視覺缺陷檢測(cè)的因素，另外印刷機(jī)是絕大多數(shù)印刷企業(yè)的資產(chǎn)，印刷效率決定了大部分企業(yè)的效益。目前，在印刷環(huán)節(jié)，還存在大量時(shí)間浪費(fèi)在調(diào)整套準(zhǔn)、調(diào)整顏色、擦橡皮布、洗印版上的情況。

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 is still a lot of time wasted in adjusting the registration, adjusting the color, rubbing the blanket and developing the printing plate.