EP 4286165 A1 20231206 - LIQUID EJECTION HEAD
Title (en)
LIQUID EJECTION HEAD
Title (de)
FLÜSSIGKEITSAUSSTOSSKOPF
Title (fr)
TÊTE D'ÉJECTION DE LIQUIDE
Publication
Application
Priority
JP 2022090904 A 20220603
Abstract (en)
According to one embodiment, a liquid ejection head includes an actuator unit, a nozzle plate, and a diaphragm portion. The actuator unit has grooves constituting a plurality of pressure chambers and a plurality of sidewalls formed between the grooves constituting the pressure chambers. The nozzle plate is disposed to face one side of the plurality of pressure chambers. The diaphragm portion has an diaphragm wall that blocks a portion of a communication port of the pressure chamber that communicates with a common chamber of the actuator unit and forms a diaphragm aperture that is decreased in width on the one side in a depth direction of the pressure chamber.
IPC 8 full level
CPC (source: EP)
B41J 2/14209 (2013.01); B41J 2/1609 (2013.01); B41J 2/1623 (2013.01); B41J 2/1631 (2013.01); B41J 2/1632 (2013.01); B41J 2002/14362 (2013.01); B41J 2002/14491 (2013.01)
Citation (search report)
- [A] JP 2016159441 A 20160905 - SII PRINTEK INC
- [A] US 2015109373 A1 20150423 - HORIGUCHI SATOSHI [JP]
- [A] US 2020290354 A1 20200917 - SHIMOSATO MASASHI [JP]
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4286165 A1 20231206; CN 117162668 A 20231205; JP 2023177931 A 20231214
DOCDB simple family (application)
EP 22211303 A 20221205; CN 202310081435 A 20230117; JP 2022090904 A 20220603