The Process Of 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 frequently used printing process called offset printing.

The clients and the printers like offset printing because of its cost effectiveness for the production of large number of prints. Hence for bulk orders any good printing company would advise you to go for offset printing.

This printing technique uses oil-based ink, which the water can not dissolve. In offset printing, rubber blankets act as intermediate for copying the image on the paper, which is originally on the plate.

The first step is developing the images. Film negatives were used in the earlier times for making images and then copying them to aluminum based printing plates. This is no longer needed as the technology exists for making the plates in one go through an image setting system. After this, the plate is attached to a cylinder with the correct side facing upwards. Thereafter water, and then ink, is spread on the image plates. The image receives the ink while the rest of the area receives a thin coating of water, which ensures that the ink does not spread beyond the images.

Next, the image is inverted when it is put on to a rubber blanket which is attached to another cylinder. Afterwards, 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.

Last steps of the printing job involve things such as stapling, gluing or organizing the printed sheets according to the instructions of the customer, and any printing company should easily manage these.

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