What You Should Know About Offset Printing

By: Albert Santos


Many significant operations in a business such as maintaining flow of information intra-company and marketing the products of the company need printing service. Therefore, it is important to have some basic knowledge of how printing works, especially offset printing, which is one of the most widely employed printing technologies.
Offset printing can generate a large number of prints quickly, which makes it more economical than other technologies and also more popular. That is why for bulk orders any good printing company would recommend you to opt for offset printing.
Offset printing uses oil based ink, which does not mix with water. Its so called because in this process, images are not transported directly from the plates to the paper but this is done through rubber blankets as a medium.
First step is to prepare the images. When offset printing started, the images had to be made by the use of film negatives and they were later transferred to aluminum plates. In the current times, the printers can use the image setting system for making the plates directly. The next step is to transfer the plate on to a cylinder such that it is spot on. Then the water and ink are dispersed on the image plates, one after another. The ink is poured over the image and to stop it from spilling, a thin layer of water is spread over the remaining part of the plate.
The image is then transferred from the plates to the rubber blanket spun on another cylinder, so that it is inverted. After that, sheets of paper of required proportions are put together and the rubber blankets transfer the image to the sheets on a third cylinder, where it comes out as the correct side.
Printed sheets are stapled, glued, or arranged in any other way as required and the printing company delivers them after giving some finishing touches.

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