What is: Offset Lithography (also known as photolithography) ?

This refers to the most popular type of lithography. It is a printing process in which the plate which is used would accommodate both areas (image and non-image). However, both of these areas would be kept apart through the use of chemical repulsion.
The ink which is used for the printing process would first be offset or moved from the original plate and kept into a blanket which must be rubber. From the rubber blanket, it would then be transferred to the paper.