EP 1600294 A1 20051130 - LIQUID DROP EJECTOR AND METHOD FOR DETECTING/JUDGING ABNORMAL EJECTION OF LIQUID DROP EJECTION HEAD
Title (en)
LIQUID DROP EJECTOR AND METHOD FOR DETECTING/JUDGING ABNORMAL EJECTION OF LIQUID DROP EJECTION HEAD
Title (de)
FLÜSSIGTROPFENAUSSTOSSVORRICHTUNG UND VERFAHREN ZUM ERFASSEN/BEWERTEN VON ANOMALEM AUSSTOSS AUS DEM FLÜSSIGTROPFENAUSSTOSSKOPF
Title (fr)
EJECTEUR DE GOUTTES DE LIQUIDE ET PROCEDE DE DETECTION/ESTIMATION D'UNE EJECTION ANORMALE D'UNE TETE D'EJECTION DE GOUTTES DE LIQUIDE
Publication
Application
Priority
- JP 2004002390 W 20040227
- JP 2003055020 A 20030228
- JP 2003055021 A 20030228
- JP 2003092934 A 20030328
Abstract (en)
The droplet ejection apparatus of the invention includes a plurality of droplet ejection heads 100 each having a diaphragm, an actuator that displaces the diaphragm, and a nozzle through which a liquid in a cavity is ejected in the form of droplets in response to the increase and decrease of the internal pressure of the cavity, ejection selecting means 182 for selecting the nozzle of the ink jet head 100 in the plurality of ink jet heads 100 through which a ink droplet is to be ejected, ejection failure detecting means 10 for detecting a residual vibration of the diaphragm and detecting an ejection failure of the droplets on the basis of a vibration pattern of the detected residual vibration, and switching means 23 for switching a connection of the actuator from a driving circuit to the ejection failure detecting means 10 after carrying out a droplet ejection operation by driving the actuator. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/14 (2006.01); B41J 2/165 (2006.01); B41J 2/19 (2006.01)
CPC (source: EP)
B41J 2/0451 (2013.01); B41J 2/04541 (2013.01); B41J 2/04578 (2013.01); B41J 2/0458 (2013.01); B41J 2/04581 (2013.01); B41J 2/14314 (2013.01); B41J 2002/14411 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 1600294 A1 20051130; EP 1600294 A4 20060830; JP 3794431 B2 20060705; JP WO2004076180 A1 20060601; WO 2004076180 A1 20040910
DOCDB simple family (application)
EP 04715497 A 20040227; JP 2004002390 W 20040227; JP 2005502958 A 20040227