Printing process is the process of printing patterns on textiles with dyes or pigments. Printing can be divided into fabric printing, top printing and yarn printing, with fabric printing as the main one. Top printing is used to make mixed color tweed; Yarn printing is used to weave fabrics with special color patterns. Fabric printing has a long history. China used stencil printing during the Warring States Period (see History of Dyeing and Finishing in China). India had block printing in the 4th century BC. Continuous gravure cylinder printing began in the18th century (see cylinder printing). Screen printing is developed from hollow board, which is suitable for small batch and multi-variety printing of deformable fabrics.