EP 3723987 B1 20220112 - METHOD OF OPERATING A DROPLET EJECTION DEVICE
Title (en)
METHOD OF OPERATING A DROPLET EJECTION DEVICE
Title (de)
VERFAHREN ZUR OPERATION EINER TRÖPFCHENAUSSTOSSVORRICHTUNG
Title (fr)
PROCÉDÉ DE FONCTIONNEMENT D'UN DISPOSITIF D'ÉJECTION DE GOUTTELETTES
Publication
Application
Priority
- EP 17207753 A 20171215
- EP 2018083175 W 20181130
Abstract (en)
[origin: WO2019115257A1] A method of operating a droplet ejection device comprising an ejection unit arranged to eject droplets of a liquid and comprising a nozzle (22) formed in a nozzle face (24), a liquid duct (16) connected to the nozzle (22), and an electro-mechanical transducer (28) arranged to create an acoustic pressure wave in the liquid in the duct (16), wherein the liquid and the material constituting the nozzle face (24) are paired such that the liquid is wetting for the nozzle face (24), characterized by a step of monitoring a parameter that represents a state of a liquid pool (30) formed on the nozzle face (24) around the nozzle (22), and a step of enabling the ejection unit to operate as long as the pool (30) is present and the monitored parameter is within a predetermined range.
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/14 (2006.01)
CPC (source: EP)
B41J 2/04571 (2013.01); B41J 2/04581 (2013.01); B41J 2/04588 (2013.01); B41J 2/04596 (2013.01); B41J 2/14233 (2013.01); B41J 2002/14354 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2019115257 A1 20190620; EP 3723987 A1 20201021; EP 3723987 B1 20220112
DOCDB simple family (application)
EP 2018083175 W 20181130; EP 18807663 A 20181130