Offset printing is a widely used printing technique that relies on a plate that transfers ink to a rubber blanket, which then prints the image onto paper. There are several popular synonyms for the phrase "printed by offset." Some common alternatives include lithography, which involves printing on a flat stone or metal plate, and flexography, which is a type of printing done with flexible printing plates. Other options include gravure, which uses a cylindrical printing surface, and silkscreen printing, which involves pushing ink through a mesh screen onto the printed surface. All of these printing techniques offer their own unique benefits and are commonly used for a wide range of printing applications.