this kind of 3 in 1 green laser pointer is really practical

Here will introduce the dust proof characteristic.
, The device did not take long to reach a higher level in image quality. The mid-1990s, some printing equipment dealers began to use it as alternative products of the offset press sales, and other advantages of the digital equipment is also becoming increasingly clear up. With the advent of digital device, pre-press costs have been significantly decreased. Because it does not need to use the printed version. Images of each page will be transferred to the sheets In other words, the contents of each page can be independently changed. Toner color is uniform, and the sheets dry quickly after printing. This means that we can follow the sequence from the first page to last page to print brochures, catalogs and books, then they are stacked and bound together. There is a dust-proof switch at the most front of the body of green laser pointer .
Sheets of size are generally A3, it will be the number of pages per hour printing a certain limit. But it can also be automated finishing, thus significantly improve the speed of the entire printing process. Another key difference is that the offset press operators need to have more technical knowledge than the operation of the digital presses. Offset printing is a chemical process, relatively speaking, more difficult to control, and digital printing presses almost does not require the operator to control the image's color, because it can be a resource file to correct the color. In the offset printing process, the greater the number of printed, the lower the unit cost of printing of the page. Digital printing unit printing cost is relatively stable and because prepress low cost. The manufacturer added an extra head to green laser pointer .Actually, this kind of 3 in 1  green laser pointer is really practical and popular
This indicates that digital printing is more suitable to quickly carry out cycle for short runs. Of course, between these two there are a number of copies printed cut-off point, more than this number, the choice of offset is relatively cheap; and below this number, you should choose digital printing. However, this cut-off point can not be determined based on A3 sheets of unit cost, we must take into account the full cost of production. In other words, the complexity of print job determines the level of the cut-off point. Offset printing quality. In the past decade, the quality of offset printing to achieve standardization and rationalization, and has become an industry processes. And now, the industry has emerged a new standard for four-color ink, the ink film thickness and the entire production process.