Which process consists in making a negative of a map and contact printing it on an albumen-sensitized metal printing plate?

• A. Photostat
• B. Pull-up
• C. Stereoscopic Vision
• D. Photolithography

Answer: (D)

Photolithography focuses on recording a photographic image onto a light-sensitive plate and then using that plate to print. In this process, a map is reproduced by creating a negative, placing it in contact with a metal plate coated with an albumen-sensitized layer, and exposing it to light. The exposure transfers the image onto the plate, which is then developed to form a printing surface. The plate can then be used in a lithographic press to produce multiple copies of the map. This approach is distinct from other options: photostat copies with a camera onto paper, pull-up’s color-assembly method, or stereoscopic vision’s 3D imaging, none of which involve creating a negative and contact-printing onto a metal printing plate.