It is the switch at the front end of green laser pointer

It is the switch at the front end of  green laser pointer .
A lot of printing in Europe, go through the process standard offset certification, to indicate that they are able to comply with these standards. People to the promulgation of the standards in order to achieve the perfect combination of prepress and printing, but customers have come to the conclusion that all through the printing of certification should achieve the same level of quality. Print buyers do not understand is: the production process involves many variables, using standard printing technology to produce different products can still have a completely different appearance. Print buyers when negotiating lower prices, but did not really care about the true meaning of the standard certification. The quality of digital printing. In general, when the printing field blocks, digital presses in the printing layer is thicker than offset press. This dust-proof switch can prevent the dust outside coming into green laser pointer .
Because the toner does not soak into the paper, and it once the fusion does not occur any change. Toner fusing process is actually a toner baked into the paper process, not the color of subsequent changes, the sheets will soon be dry and ready to enter the finishing procedures. Photo copy made two major advances in recent years. First, the advanced chemical processes for people to create smaller toner particles. In addition, the mechanical process improvements so that the toner particles become smaller and more rounded. The narrowing of the toner particles can improve the photo of the replication process, to achieve the perfect halftone quality.
Although it allows the other side of the press soon began to print the page, but the varnish is not a panacea, because it does not make the wet ink drying. On the contrary, it will prevent the ink is fast drying. Before the folding and cutting, the sheets still need to place all night. High concentration of pigment ink. Some ink dealer can provide a high concentration of pigment ink, in order to achieve a strong color contrast, the offset image brightness of the midtones. These inks are very expensive, and each dealer to sell the number of colors are different. High concentrations of pigment ink must obtain the prepress department to allow staff to adjust the curve of the standard color reproduction. The manufacturer has changed the dust-proof switch of this kind of green laser pointer .