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1. (WO2018219409) METHOD AND DEVICE FOR PROCESSING WATER-BASED INKJET INKS FOR DIGITAL CONTACTLESS INKJET PRINTING

Pub. No.:    WO/2018/219409    International Application No.:    PCT/DE2018/100521
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 30 01:59:59 CEST 2018
IPC: B41J 2/045
B41J 2/14
Applicants: TRITRON GMBH
Inventors: SIMON, Jens
Title: METHOD AND DEVICE FOR PROCESSING WATER-BASED INKJET INKS FOR DIGITAL CONTACTLESS INKJET PRINTING
Abstract:
The invention relates to improvements in the processing of water-based, low-viscosity liquid inkjet inks for digital, contactless inkjet printing, wherein the inkjet ink is applied in a time-dependent and location-dependent manner and divided into individual volume units from systematically arranged nozzles. The method according to the invention compensates for the evaporation rate of water from each inkjet ink present at the nozzle outlet (liquid phase) into the surrounding atmosphere (gaseous phase) and the condensation rate of water vapour from the surrounding atmosphere into each inkjet ink present at the nozzle outlet by sufficiently reducing the evaporation rate by cooling the inkjet ink at the nozzle outlet, and/or by sufficiently increasing the condensation rate by saturating the surrounding atmosphere with water vapour. A corresponding device is also proposed.