Many significant operations in a business such as maintaining flow of information intra-company and marketing the offerings of the company require printing service. Hence it is helpful to learn about the basic working of the commonly used printing process called offset printing.
Offset printing is so popular among printing service companies and customers because for large quantities, it turns out to be cheaper than alternative methods. The clients giving big printing orders are recommended by the printers to choose offset printing due to this reason.
This printing technology uses oil-based ink, which the water can not dissolve. In offset printing, rubber blankets play a transitional role in copying the image on the paper, which is to begin with on the plate.
The first step is preparing the images. When offset printing began, the images had to be made by the use of film negatives and they were later put on aluminum plates. This is no longer required as the technology exists for making the plates in one go through an image setting system. The subsequent step is to transfer the plate on to a cylinder in the right manner. Then the water and ink are dispersed on the image plates, in that order. The ink is spread over the image and to prevent it from overflowing, a thin layer of water is put over the remaining part of the plate.
The image is then transferred from the plates to the rubber blanket rolled on another cylinder, so that it is inverted. The image is now printed with its correct side facing up by cutting sheets of papers into correct size and placing them on a third cylinder.
Printed sheets are stapled, pasted, or assembled in any other way as needed and the printing company sends them after giving some finishing touches.
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