Lithography is a printing process that was invented in 1798 involving the transfer of ink images from a stone or metal plate to paper. It works by the principle that oil and water do not mix, allowing ink to transfer from the image areas on the plate while water prevents ink from transferring from the non-image areas. The process was initially used for simple images and text but evolved to allow for complex multi-color images through chromolithography. Lithography became widely used for bulk printing applications such as newspapers and religious texts due to its affordability compared to movable type. In India, lithography flourished from the 19th to early 20th centuries and was used to print many books in Persian and other languages.