WEB OFFSET PRINTING A-Z
What IS Web Offset Printing?
In order to understand web offset printing, you need to first understand what offset printing is and how it works. Offset is a form of printing where the printed images begin on metal plates and are transferred onto rollers or blankets and then transferred again onto the paper. This kind of printing allows for large-scale print production, with accuracy and efficiency. The use of plates allows for high levels of consistency and quality across the prints.
Web offset is much like offset, except it uses a large roll of paper that is fed continuously through the press. Standard offset uses sheets that are fed through individually. Web offset works best for large-scale projects with high volumes. Items that are typically printed this way are books, catalogs, and magazines.
H/t: WhatIs.com