Abstract: A direct printing machine for printing containers with a direct print, having at least one stationary direct printing station with a direct print head, an ink supply system for supplying ink to the direct print head, and with a conveyor for conveying the containers past at the direct printing station, the ink supply system comprising a supply line and/or a return line for the printing ink, for producing ink flow from a supply tank to the direct print head and/or back, wherein the ink supply system comprises at least one header tank arranged in the supply line and/or the return line for setting a meniscus pressure of the printing ink, and a valve terminal is arranged between the header tank and the direct print head to interrupt the ink flow over the direct print head and to produce it in a bypass line.

Abstract: The present disclosure relates to a compound of formula (1): where R1 through R8, which can be identical or different from each other, each are selected from of the group comprising hydrogen and the radical —(CH2)k—X, where k is a whole number from 1 to 20 and where X is an organic radical comprising a) at least one neutral, protonizable nitrogen atom and/or b) at least one positively charged nitrogen atom, under the provision that at least 1 radical R1 through R8 is not hydrogen. The invention further relates to the production and use of said compound.

Abstract: The present disclosure relates to a compound of formula (1): where R1 through R8, which can be identical or different from each other, each are selected from of the group comprising hydrogen and the radical —(CH2)k—X, where k is a whole number from 1 to 20 and where X is an organic radical comprising a) at least one neutral, protonizable nitrogen atom and/or b) at least one positively charged nitrogen atom, under the provision that at least 1 radical R1 through R8 is not hydrogen. The invention further relates to the production and use of said compound.