An inline exposure and development system for screen printing with a computer-to-screen system (CTS) is very high. Lumenator II is a practical UV-LED exposure and development system for screen printing. Lumenator II has a vertical construction and therefore a very small space requirement. The Lumenator is used for the fast exposure and development of screen printing stencils made with CTS systems such as Exile Spyder or Douthitt CTS.