In a pressure accumulator vessel of a high pressure fuel supply device, a chamfered section is formed in a connection between an accumulation chamber and a corresponding fuel passage. An aperture plate with a suitably sized aperture is placed between the relevant output ports of the waveguide device and a light intensity detector. The article and the customized graphic are placed within the graphic transfer assembly. The electrophilic group on the pathogen inactivating compound is preferably a non-radical cationic group.