EP 1077331 A3 20020925 - Liquid drop spraying apparatus
Title (en)
Liquid drop spraying apparatus
Title (de)
Sprühapparat für Flüssigkeitstropfen
Title (fr)
Dispositif de pulvérisation pour gouttes liquides
Publication
Application
Priority
- JP 23327799 A 19990819
- JP 2000225953 A 20000726
Abstract (en)
[origin: EP1077331A2] In a liquid drop spraying or ejecting device, an introducing hole 12 is provided in orthogonal direction relative to the lower face of a pressure chamber lOn, and is vertically connected to the upper face of a flow path 20. Immediately underneath the introducing hole 12, a shock wave absorption face 21 with a depth D that is twice the diameter L of the introducing hole 12 is formed as a protrusion of the lower face of the flow path 20. In addition, the shock absorption face 21 is wider than the diameter of the circle of the introducing hole 12, and a stepped portion 22 is formed at its periphery. In this manner, in a device having a plurality of the pressure chambers and the liquid is pressurised by a piezoelectric/electrostrictive element for the purpose of spraying, back flow generated at the flow path from the introducing hole is reduced. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/045 (2006.01); B41J 2/055 (2006.01); B41J 2/14 (2006.01); F04B 43/04 (2006.01)
CPC (source: EP US)
B41J 2/14233 (2013.01 - EP); F04B 43/046 (2013.01 - EP US); B41J 2002/14306 (2013.01 - EP); B41J 2002/14419 (2013.01 - EP)
Citation (search report)
- [X] US 5906481 A 19990525 - OGAWA KAZUKI [JP], et al
- [X] WO 9938694 A1 19990805 - SEIKO EPSON CORP [JP], et al
- [X] EP 0700783 A2 19960313 - SEIKO EPSON CORP [JP]
- [X] JP H10235881 A 19980908 - SONY CORP
- [X] EP 0058912 A1 19820901 - MELIN KARL HARVID
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1077331 A2 20010221; EP 1077331 A3 20020925; JP 2001121693 A 20010508
DOCDB simple family (application)
EP 00307094 A 20000818; JP 2000225953 A 20000726