BINARY CONTINUOUS INK-JET PRINTING DEVICE, WITH REDUCED CONSUMPTION OF VOLATILE COMPOUNDS SUCH AS SOLVENTS.

摘要

The invention relates to a solution for limiting the consumption of volatile compounds, such as solvents, initially present in ink during the ejection of the latter in a binary continuous ink-jet printer. According to the invention: - it is selected an ink which volatile compounds have a Schmidt number Sc equal to one or superior; - the gutter (7) for recovery and collection of ink not intended to print and issued from a jets curtain is judiciously positioned to swallow the air flow laden by vapour of volatile compounds entrained by the ink jets curtain; - a depression level is set in the gutter to remove the volumetric flow of the swallowed flow of air; - air is injected in the vicinity of the nozzle plate of the print head to compensate recovered volumetric air-flow.