A detector cleaner generally defined as a funnel structure with a preferably integrally formed wide surface area on one end, and an integrally formed narrow surface area on the opposite end, the funnel structure further having an interior void V or funnel channel where the wide area of the funnel structure is adapted to be placed over a detector to thereby completely encapsulate the detector. The nanoparticles of the silicone composition are produced via a plasma process. The subject invention also pertains to a method for processing instruments for use in nuclear spin tomography. At least one test device, for testing the identification characteristic, or the part thereof, is also provided in the printing machine. The first group of the first optical system is contained in a space whose lower limit is defined by a lower edge of the second optical system, thereby reducing the depth of the apparatus.