Wet offset printing and waterless offset

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In general, waterless offset printing requires more demanding printer maintenance and operator skill. It is a slight mistake in the process, and the print quality may also vary greatly. The problem of ink temperature, although after years of technological development, waterless offset printing is still a very complicated process. Every process requires perfect control to achieve high print quality.

Wet offset printing is the most common printing process in the printing industry today. The basic principle is to use the ink-and-wash balance of the printing area (ink) on the printing plate and the non-printing area (water). The key is to maintain the stability and control of the ink balance.

Waterless offset printing uses a silicon coating on the printing plate as a non-printing area to remove ink balance control and eliminate the use of water as a medium.

From the point of view of printing quality, printing without water is used to make the printing offset of waterless offset more sharp and better. Waterless offset has the ability to achieve higher line counts and contrasts.

From the standpoint of print durability, wet offset printing is more compatible than waterless offset printing. Water can be thought of as a cleaning plate or ink path, a bit like a self-cleaning function when printing.

In waterless printing plates, dust and paper dust can damage the waterless offset printed silicon coating, making the selection of substrates and working environment more demanding.