+ RSSFundamental Knowledge In Offset Printing
Many important functions in a business such as maintaining flow of information intra-company and marketing the offerings of the company need printing service. Therefore 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 providers and customers because for large volumes, it is more economical than other options. The customers giving bulk printing orders are recommended by the printers to choose offset printing due to this reason.
The ink employed during offset printing has oil as the medium and does not dissolve in water. Its so called because in this method, images are not transferred directly from the plates to the paper but this is done using rubber blankets as a medium.
First step is to prepare the images. When offset printing began, the images had to be developed by the use of film negatives and they were later put on aluminum plates. In the current times, the printers can make use of the image setting system for making the plates directly. After this, the plate is attached to a cylinder with the right side facing upwards. Next, the water is spread on the image plates, which is followed by the ink. The ink is spread over the image and to prevent it from spilling, a thin layer of water is put over the remaining part of the plate.
The image is then taken from the plates to the rubber blanket rolled on another cylinder, so that it is reversed. The image is now printed with its right side facing up by cutting sheets of papers into correct size and putting them on a third cylinder.
Printed sheets are stapled, glued, or arranged in any other way as needed and the printing company sends them after giving some finishing touches.
