Thursday, March 11, 2010

Basic Information You Should Know About Offset Printing

February 9, 2010 by Anita Tan  
Filed under Business

Printing service is used by most organizations for different purposes such as marketing and corporate communications. Offset printing is the most frequently used printing technology and knowing about it is therefore helpful and important.

The users and the printers like offset printing due to its cost effectiveness for printing of large number of prints. The clients giving bulk printing orders are recommended by the printers to opt for offset printing because of this reason.

Offset printing uses oil based ink, which does not blend with water. 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 developing the images. Film negatives were used in the earlier times for making images and then reproducing them to aluminum based printing plates. In the current times, the printers can use the image setting system for making the plates directly. This plate is then placed on a cylinder in the proper configuration. Then the water and ink are spread on the image plates, in that order. The ink is spread over the image and to restrict it from spilling, a thin layer of water is put over the remaining part of the plate.

Next, the image is inverted when it is transmitted to a rubber blanket which is attached to another cylinder. The image is then printed with its right side facing up by cutting sheets of papers into appropriate size and placing them on a third cylinder.

The final steps of the printing job involve things such as stapling, pasting or arranging the printed sheets according to the instructions of the customer, and any printing company should easily manage these.

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