Offset lithography is a printing technique that transfers images onto paper using a rubber-coated cylinder known as a “blanket.” This process allows for a smoother image transfer and the ability to print on various types of paper, including rough or heavy stock.
In offset lithography, the image is first transferred onto the blanket and then onto the paper, rather than being directly transferred from a metallic drum onto paper like most digital printers. This process is used by most offset presses.
One interesting aspect of offset lithography is that the first negative image on the drum reads correctly because of the use of the intermediate blanket as the transfer mechanism. However, on the blanket, the image reads backwards before returning to its correct orientation on the paper.
FAQ
What types of paper can offset lithography print on?
Offset lithography can print on various types of paper, including rough or heavy stock.
What is the difference between offset lithography and digital printing?
The main difference is that offset lithography transfers the image onto a rubber-coated cylinder before being transferred onto paper, while digital printing directly transfers the image from a metallic drum onto paper.
Why is offset lithography used by most offset presses?
Offset lithography allows for a smoother image transfer and the ability to print on various types of paper, making it a versatile and commonly used printing technique.
Overall, offset lithography is a tried and true printing technique that continues to be widely used today.
