Offsett printing
Time:2021-03-13
Views:4449
Offcet binding
Lithographic printing involves printing ink on a blanket cylinder, and then printing onto paper by a pressure cylinder. This is one of the most common printing methods. The printing quality is good, the graphics are fine, the layers are rich, and the image color is reducible. Most of the albums, posters, magazines, books, packaging, etc. use single sheets of paper. Printed on a lithographic offset press.
According to the different printing formats, the offset printing machine can generally be divided into full-open, double-open, four-open, and eight-start. According to the number of colors printed each time, it can be divided into single color machine, two-color machine, four-color machine, five-color or more multi-color machine. The most popular machines in the society are mainly two-opening four-color machines and four-opening four-color machines. Different machines have different costs, so before designing prints, find out the positioning first, and what printing method can be used to effectively achieve the desired effect.
We use the printer‘s 10x magnifying glass to take a look at the color prints. Under the magnifying glass, the printed colors are actually small dots, which are called "dots."
There are only four color dots on this print: cyan, magenta, yellow, and black. They are matched with ever-changing colors. This is called "four-color printing." Most of the color albums, books, posters, and packaging that we design are printed in four colors. In addition to four-color printing, there are single-color printing, two-color printing, and multi-color printing.
This is a Mitsubishi four-color printing machine that swallows white paper at a dazzling speed and spit out color prints. These papers are printed with 4 inks through 4 units and become the color that the designer calls on the computer. . What‘s amazing is that the printing machine can limit the chromatic error within 0.1mm in the high-speed operation and the transmission distance of up to 10 meters, and the position of the graphics and text of thousands of sheets of paper is surprisingly consistent.
In the printing press, the paper is transferred through the cylinder, and the ink on the printing plate is transferred to the blanket, and from the blanket to the paper. Four-color printing needs to print four kinds of inks, and each ink is printed in a unit.
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Anna Zhang