EP 3129232 A1 20170215 - STURDY DROP GENERATOR
Title (en)
STURDY DROP GENERATOR
Title (de)
ROBUSTER TRÖPFCHENERZEUGER
Title (fr)
GENERATEUR DE GOUTTES ROBUSTE
Publication
Application
Priority
- FR 1453134 A 20140408
- EP 2015057612 W 20150408
Abstract (en)
[origin: WO2015155235A1] The invention relates to a device for forming and ejecting drops of an inkjet of a CIJ printing machine, said device comprising: a) a cavity for containing an ink and comprising an end provided with a nozzle (10) for ejecting drops of ink, and b) actuator means (21, 22, 32, 41, 42) in contact with the cavity. The invention relates to a device wherein the jet velocity modulation from the nozzle (10) has a value of ΔVj(ft) at the operating frequency, and does not vary, at a temperature equal to 15 °C and to 35 °C, in a frequency range of +5 kHz around the operating frequency ft, outside the range between 0.25ΔVj(ft) and 4 ΔVj(ft). In order to achieve this, the acoustic impedance of the cavity is suitable for limiting the influence thereof on the jet velocity modulation.
IPC 8 full level
B41J 2/025 (2006.01)
CPC (source: CN EP US)
B41J 2/02 (2013.01 - US); B41J 2/025 (2013.01 - CN EP US); B41J 2/14008 (2013.01 - US); B41J 2/14201 (2013.01 - US)
Citation (search report)
See references of WO 2015155235A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3019494 A1 20151009; CN 106457826 A 20170222; CN 106457826 B 20181002; EP 3129232 A1 20170215; EP 3216607 A1 20170913; US 10118388 B2 20181106; US 2017028721 A1 20170202; US 2018065363 A1 20180308; US 9844936 B2 20171219; WO 2015155235 A1 20151015
DOCDB simple family (application)
FR 1453134 A 20140408; CN 201580018654 A 20150408; EP 15714821 A 20150408; EP 17165913 A 20150408; EP 2015057612 W 20150408; US 201515302734 A 20150408; US 201715800403 A 20171101