In offset printing the matter to be printed is neither raised above the surface of the printing plate nor sunk below it. Instead, it is flush with the surface of the plate; thus offset is classified as a planographic method of printing.

Offset printing uses a common technique in which the inked image transfers (or “offsets”) from a plate to a rubber blanket and then to the printing surface. When combined with the lithographic process, which relies on the repulsion of oil and water. The offset method employs a flat (planographic) image carrier. Ink rollers apply ink to the image areas of the carrier, while a water roller coats the non-image areas with a water-based film.

The modern “web” process feeds a large reel of paper through several sections of a massive press machine. The machine usually spans several meters and prints continuously as it feeds the paper through.

Offset lithography is one of the most common methods for producing printed materials. It is often used for newspapers, magazines, brochures, stationery, and books. Compared to other printing techniques. Offset printing is best suited for cost-effectively producing large volumes of high-quality prints with minimal maintenance. Many modern offset presses use computer-to-plate systems instead of the older computer-to-film workflows. Which further enhances their efficiency and print quality.