A recycling method enables closed-loop material recycling (CMR) to be smoothly performed while reducing the amount of a recovered material disposed of outside the CMR loop. The amount of use of recovered ABS in a copying machine in a product production division is determined on the basis of a plan to...http://www.google.de/patents/US7020534?utm_source=gb-gplus-sharePatent US7020534 - Recycling method
