Patent ID: 6853395

Claim:
A method of using a toner-free process for inscription of a sheet-like active agent-containing therapeutic system having an adhesive side and an adhesive-free side, said system comprising at least one active ingredient-containing layer, a material layerto be inscribed, and a backing layer impermeable to ingredients or water vapor, by using a movably guided laser beam emission device, said process comprising: placing the sheet-like active agent-containing system with the adhesive side facing a support position; guiding the laser emission device to emit the laser beam onto the sheet-like active agent-containing therapeutic system by a program of a manually operable central control unit; and controlling the intensity and penetration depth of the laser beam according to the material properties of said sheet-like active agent-containing system in such a way that the laser beam does not penetrate far enough to reach one of the at least one active ingredient-containing layer and preventing a detrimental influence on the ingredients contained in the system.