A method is provided of restricted substance management and recycling in a manufacturing environment. A part or parts of the cage can be repositioned to permit the hatch cover to be opened and then can be returned to a safety enhancing position. A structured gate electrode layer with at least one opening is then formed on the first main side on top of the first oxide layer. Finally, the patterned photoresist layer is lifted off; wherein the shape of the conductive layer remaining on the substrate is complementary to that of the patterned photoresist layer. Control information is attained from the job data and with the control information the page frame data are merged with page content data of pages filled with editorial information. Consequently, since the stress produced due to a plastic deformation in forming the groove portions can be absorbed by the annular groove having a smaller rigidity than the groove portions, no undesirable plastic deformation of the groove portions occurs and hence the accuracy of the finished size of the multi-stage pulley can be improved.