Packaging material which is at least partially light permeable, for light-sensitive products, is printed using a toner mixed with the natural colorant of the packaged product

摘要

The packaging material (8), which is at least partially permeable to light, is printed with a logo using the packaged product colorant together with a colorless toner. The material is passed through an electro-photographic printer (1), with an additional printing unit (2) for the toner. The other printing units (3-6) of the machine use colored inks.