planographic printing; planography
Technical term in printing; refers to methods where the printing and non-printing areas are on the same plane, such as lithography.
Planographic printing is the basic principle of offset printing.
Offset printing is a specific planographic technique widely used in commercial printing, while 平版印刷 is the broader category.
Relief printing where the image area is raised; contrasts with the flat surface of planographic printing.
Intaglio printing where the image is incised into the surface; another contrasting method.
Compound of 平版 (planographic plate) and 印刷 (printing). The term is a direct technical description of the process.