An automatic film processor sets new reference developer chemical temperatures and film transport speeds in accordance with user input at a keypad and disengages the film transport motor under microcomputer control to prevent further introduction of film until sensed actual developer temperature is within...http://www.google.es/patents/US4994837?utm_source=gb-gplus-sharePatente US4994837 - Processor with temperature responsive film transport lockout
Processor with temperature responsive film transport lockout