Most organizations need a printing service on a regular basis, whether it is for marketing purposes or for internal communication. Therefore, it is good to have some fundamental knowledge of how printing works, particularly offset printing, which is one of the most widely employed printing techniques.
The users and the printers like offset printing because of its cost effectiveness for printing of large number of prints. The clients giving big printing orders are advised by the printers to choose offset printing due to this reason.
Offset printing uses oil based ink, which does not mix 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. When offset printing began, 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 make use of the image setting system for preparing the plates directly. This plate is then put on a cylinder with the correct side up. Thereafter water, and then ink, is spread on the image plates. The ink is spread over the image and to restrict it from overflowing, a thin layer of water is spread over the remaining part of the plate.
Next, the image is inverted when it is put on to a rubber blanket which is attached to another cylinder. After that, sheets of paper of desired 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.
The work of printing is completed by the printing company by consolidating the printed sheets using staples or glue or in any other way as per the requirements of the client.
The users and the printers like offset printing because of its cost effectiveness for printing of large number of prints. The clients giving big printing orders are advised by the printers to choose offset printing due to this reason.
Offset printing uses oil based ink, which does not mix 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. When offset printing began, 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 make use of the image setting system for preparing the plates directly. This plate is then put on a cylinder with the correct side up. Thereafter water, and then ink, is spread on the image plates. The ink is spread over the image and to restrict it from overflowing, a thin layer of water is spread over the remaining part of the plate.
Next, the image is inverted when it is put on to a rubber blanket which is attached to another cylinder. After that, sheets of paper of desired 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.
The work of printing is completed by the printing company by consolidating the printed sheets using staples or glue or in any other way as per the requirements of the client.
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