Presents a case study of a production seat booking system for the photographic color film manufacturing industry. This manufacturing process is a hybrid flow shop, which consists of two manufacturing stages: first, processing of the film bulk‐rolls in batches, and second, packing of the final product specifications in a continuous‐process line. A production seat booking system is a new scheduling system, which reduces planning lead‐time significantly, by simplifying the time‐for‐delivery adjustment work. It was found possible to shorten planning lead‐time sharply based on this booking system. Additionally, it became possible simultaneously to reduce inventory levels and logistic‐related costs through such management innovation as shortening planning lead‐time and other entry delivery systems and such improvement activities as making small lot‐size.