The consumption of copy or print paper has been rapidly increasing. There are several aspects to be considered for environmental conservation, for example, resource of woods, energy consumption and paper trash in office, etc. We have been developing the toner removal system from copied paper since 1993. We have improved such as machine service life, toner removal mechanism, toner removal quality, special paper and running cost, etc. We have developed a commercial prototype. The system proved that a toner removal system permits reuse of a copied paper multiple times so that the system is effective for environment conservation.