In the process of printing, there will be many problems, resulting in poor quality, but how to deal with the problem of imprinting? Next, please Jining Printing and Packaging Factory to answer the question.
In the case of the same calendering process parameters, such as calendering temperature, calendering pressure and so on, through comparative analysis, it can be seen that the calendering quality is determined by the quality difference between the two sheets. Printing pressure is high, wrinkles will occur, stripes on the surface of cardboard paper is relatively poor. If some wrinkles and stripes can not meet the quality requirement after calender, and make waste disposal, it will surely help Jining Printing and Packaging Manufacturer to make the light before pressure loss pass through glass instead of plate and then polish. During the first hot drying time of calender, when there is no pressure, the strip of calender drives, and the discharging port finally drives the plate on the surface of the strip and drives it through the strip. The surface of the paper tape enters the baking and returns to the feeding port of the calender, so that the paper wrinkles and stripes disappear.
Bar code is an automatic identification information code. Because of its high data acquisition rate, high reliability and low cost, it is widely used in many books, stickers, commodities and packaging. Bar code is a computer graphics language. It consists of lines and symbols of different lengths and widths. It can be read by photoelectric scanning.
Seeing that barcode is the early one-dimensional barcode in the market, with the development of VLSI technology, one-dimensional barcode has the shortcomings of small information capacity, reducing the size of barcode and improving the anti-pollution ability, a two-dimensional barcode has been developed, which makes the area of barcode smaller and smaller, greatly improves the function of barcode scanner, reads more precisely, and increases the storage space of barcode。 In addition, two-dimensional code can also use encryption technology, which greatly improves the anti-counterfeiting performance of goods。 According to its structure, two-dimensional bar codes can be divided into two categories: stacked bar codes and matrix bar codes。 In printing technology, not only can it be printed in black character white paper, color printing, can be used for printing machines and objects, data can be read from line to surface, or even rotate 360 degrees, and error correction function can be used to restore damaged or damaged barcode recognition, error rate is more than 61 million。
With the development of science and technology, various new barcodes, such as invisible barcodes, metal barcodes, watermarking magnetic barcodes, have been developed.